Transcript of Record — Minerals Separation, Ltd. v. Butte & Superior Mining Co.

INDEX TO VOLUME II.

Original, VPrint

Patent in suit, SO5.120, November 6, 1W6............. mo TMs

RUMP ccccccccrcccecceerrecerseroerocseevoecee On mio

FACCRMS AATOCMCH. cc ccccccceccesecccccceeevescecces O58 570

Stipulation as to CVIMONCOE. .. ccc cece cence reer eeeee SZ DS4

pi a | SPP Prrrrerrrrererrierrerierieirrrie ON} 5S4

Chapman's report, August 16, 1007... ccc cere eeeees vs4 5S

Higgzine’ report, January 4, 1011. ..ccccccccccccovcces OSD DSS

Eevee better, TORPURTY FT, Wisc scccvcccscceccevvecceve 100) HSS

a PPT TTETITITILTTriirierre rT 1) 5Sv

Translation of Froment description and descriptive

matter on Froment drawitigs........ceee cere en enes M5 no

PUPee Fears WU sc cc ceccccnccececoucsoerseceeces 1006 Goo

Criley and Everson publleation...... cece eee eeeecees 104) Gol

Statement of profit, Lazard ventures.........0. cece ee 1010 Gor

Table of material and results, Lazard ventures........ 1011 Gos

Statement of expenditures in agitation-froth process... 1012 G04

Statement of expenditures by American Syndicarce in

agitation-froth process....... peoweeeeescedsactvavees 10153 GOA

Statement of tonnage treated by agitation-froth process

at Brolets FR, Amstrad. cccccccccccccvescecscecs . 1014 605

Statement of profits and royalties on agitation-froth

PUGS ccccevesecteeeseceecesteecesctvceceouseees 1015 GO6

Table of Sulphide Corporation operations with agita-

tion-froth process (small sheet)... 6... cece eee eees -» 1016 OG

Table of Sulphide Corporation operations with agita-

tion-froth process (large sheet) ......6ceeeeeeees -. 1016 GOOG

Sulman and Pieard report, March 25, 1008.........066 1016 OO7

Sulman and Picard report, May 5, 1908....... ssceeves Sue G12

Sulman and Picard report, September 24, 1908........ 1081 614

Sulman and Picard report, November 19, 1905......... 1047 626

Sulman and Picard report, March 4, 1904..........656. 1059 632

Sulman and Picard report, April 19, 1904............. 1068 637

Sulman and Picard report, May 2, 1904....... eovegees 1075 OA

Sulman and Picard report, May 18, 1904...........66. 1077 642

Sulman and Picard report, February 17, 1905......... 1081 O44

Sulman and Picard report, February 21, 1905...... coe Eee OAT

Higgins’ report, March 2, 1905....... edecveteveessess Sane 650

Minerals Separation letter, March 3, 1905..........4. 1097 653

Sulman and Picard report, March 3, 1905..........6.. 1008 653

Minerals Separation letter, March 6, 1905...........6+ 1107 657

Higgins’ reporf, March 16, 1905......... ove aveons verve 1108 658

Sulman and Picard report, May 3, 1905..... eovctscerse Baae 663

Cable, Hoover to Hyde, January 18, 1910.............. 1126 669

a eh Be a el ee

INDEX.

Original. Print

Cable, Hyde to Hoover, January 20, 1910.............. 1127 670

Cable, Hoover to Hyde, January 21, 1910.,............ 1127 670

Cable, Hyde to Hoover, January 24, 193%. ........0000. 1128 670

Sulman and Picard report, February 24, 1910......... 1128 671

Letter, Minerals Separation to Hyde, March 2, 1910.. 1136 674

Hyde acceptance, March 3, 1910... .cccccccseseesecese 1140 676

HGCET SOOET, CHT Bey Bee ec sce cvevewncdcvsevesvees +» lll O77

Nutter report, December FT, 191. 6. eccdcscevevsveveces 1145 679

Letter, Minerals Separation to Hyde, November 23,1910) 1186 699

Cable, Minerals Separation to Hyde, December 8, 1910 1188 TOO

Cable, Hyde to Minerals Separation, December 9, 1910 1189 TOO

Sayan Pemert, TOMY GS, Wiss csevececevvecsvteteeys 11%) 701

Copy memorandum re managership of Minerals Separa-

tion American Syndicate, Limited................. 1203 TOS

Letter, Hyde to Minerals Separation American Syndi-

cate, Fanauary 17, Wilecveaccces (ees CoNweneeeees F 1206 709

Letter, Minerals Separation to Hyde, February 1, 1911 1207 710

Extract from Richards’ ore dressing.............e.00. 1208 710

Assignment, Froment to Ballot, November 17, 1903..... 1212 7iZ

POCO TENTURD DORI sc vee beech exerveutersesvncee 1216 71h

Translation of Froment Italian patent............... 1218 717

Photograph, Australian Cattermole plant............. 12224 719

Sulphide Corporation retreatment plant photograph 1. 1222b 720

Sulphide Corporation retreatment plant photograph 2... 1222¢ 72

Sulphide Corporation retreatment plant photograph 3... 1222d 722

Sulphide Corporation retreatment plant photograph 4... 1222¢ 723

RTGe SO NE 5 oo de dw pvadeevetnesbivedecex ess 1227 726

Gabbett, 444,345, January 6, 1801........0.eecees 1227 726

Hebron, 474,820, May 17, 1892....... haveveteares = Te

Robson, 575,669, January 19, 1807........ccc2e00. 1240 Ty

Cattermole, 763,200, June 21, 1004.....cccccscceve 1246 744

Cattermole, 763,260, June 21, 1904.......cccccceee 250 THO

oe ee ee rn eee 125-4 Tt

Hoover, 953,746, April 5, 1910........ Perret ree rr Te 1258 rays

Hoover, 979,857, December 27, 1910............. -. 1262 760

British patents ......... PETC Or CEP OP OTT ee 1265 TO

Peegees, GSB OF 180. oc cecoccecece errr swreedtae 1265 765

Boulton and Gabbett, 840 of 1889............. ‘os caren 760

Sere Cr 01, Foun GE Beebe vsvresevareresteeevs 1277 778

CHAINIEN, Ti ae Cl. FOGG see rive ecadcereveresrvsd 1283 788

Watter’ of Gl, 20,870 Of 1000: cc ccccviccsesecene caes See TO

Nutter et al, 23,949 of 1910....... senues tovvesees Bawa 706

Nutter drawing, defendant's plant (sheet 1)......... » 1200 804

Nutter drawing, defendant's plant (sheet 2)....... cvs Sen 805

Sulman drawing accompanying report, May 3, 1905.... 1302 806

Drawing, Australian model plant............ ee teche” aa 807

Drawing of 1909 and 1910, agitation-froth plants

CSO Bx 0000'ss 0h veeesen SONOS RT ONs Veo REC eeeey ane 808

Drawing of 1909 and 1910, agitation-froth plants

CURIOS Bs ie vvy sen nsv senses TE Pere evverrde 1305 809

King John's Court standard ohanet (sheet 1). ’ 1306 810

EDR RA PPG “. o x eat © Pere are tet Wer ae aah coe tana

INDEX.

Original.

King John's Court standard plant (sheet 2).......... 1307

King John's Court standard plant (sheet 3).......... 1308

First tracing slide machine (sheet 1)...........0006- 1310

First tracing slide machine (sheet 2)..........eeee0. 1311

Froment plan.......... Wet Ti Tre rrie cavegcousteene Beas

CPTI Uhnino'y'o ce0 0 00 ¥ duce dsweenseewseeunes 13138

Gabbett advertisements........... evt¥CauewevayiNnes 1314

SOR, DIS CSN iv. cates eacwenevecesrveereds 1314

DO, OP IE Bhi 6:0 600-60 cheese eneeineres 1518

SOU, GOVOTIIOINOIS This 60.666 600 cnsedessss 66 ewes 1319

Ps Meee LEC LeL CE CEEETR ORT EEET LEE 1828

Amendment to answer..........0.- jaweneeud neeeeeed » 1837

Deposition of Jesse C. Gibson. ........ eee eee rere 1344

Notary’s certificate.......... wrtrre ee eveevenewoueey 1371

Deposition of James M. Hyde......... Jewetenve sovees ove

Deposition of Eugene A. Byrnes..........6. oN Gees 1452

Notary’s certificate.......... Ves eedeerveseen SOvevoeve 1595

Order for commission to take depositions. Tee eT ee 1597

Stindiation of THC... escveccvse thareecews rece TTT 1600

Deposition of Henry Livingstone Sulman............ 1602

Hugh Fitzalis Kirkpatrick-Picard...... 1682

PO Sse h carr é ye eter eue eet eens 1710

Peerbert Clark Moore? ...ccnescesevess « S¥e2

ee ae reer ee Tee 1790)

Defendant’s Exhibit Extract from “Treatise on Chem-

istry Applied to the Manufacture of Soap and

RE GS. ea near tedeueeh49ee 6eneenves exeeee we

Defendant's Exhibit Hyde Sketch of Experimental Ma-

NE Ne kU ae VV ns CSN HWY Oar OREN OOO EE Se Oar Eee TOR

Defendant's Exhibit Certified Copy of File-wrapper and

Contents of Patent TSS,247....... AMEN NNR a0

Defendant's Exhibit Certified Copy of File. wrapper and

Contents of Sulman and Kirkpatrick-Picard Vatent

PO Si 6h 0565s 5 CER Greta es TERED NAO ES AS ‘snes

ill

Print

811

S812

S13

814

815

S16

817

S17

S19

S20

&21

82S

833

S47

S48

SSS

955

956

957

959

OS

1012

1043

1052

1068

1069

1070

eunatebiiassdn baleeicaeBenks

CIE RL Gp

Se ae ne £1

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Rent

BUTTE & SUPR. MNG. CO. VS. MIN. SEP., LTD., ET AL.

V47-5

COMPLAINANTS’ RECORD.

VotumeE III.

EXHIBITS.

36—Ree.

sores ama :

PELL YL EET OT MS LLIN ORE AIM CARESS 2 MEI, AR PR TET IE UE Sm

~* Wen Se ome 2 ee

BUTTE & SUPR. MNG. CO. VS. MIN. SEP., LTD., ET VE. 563

No. 835,120. PATENTED NGV. 6, 1906.

H. L. SULMAN, 8. F. KIRKPATRICK-PICARD & J. BALLOT.

ORE CONCENTRATION.

PTT AYPLIOATION PILED MAY 20. 1905

2 SREETS—SHEET 1

“he Oar A t folra 2 ft

v

564 BUTTE & SUPR. MNG. CO. VS. MIN, SEP., LTD., ET AL. |

No. 835,120. PATRNTED NOV, 6, 1906. a

H. L. SULMAN, H. F. KIRKPATRICK-PICARD & J. BALLOT,

ORE CONCENTRATION,

APPLICATION FILED MAY 2). 1905

2 SHEETS—SHEET 2

—

1

wn

wn

UNITED STATES

BUTTE & SUPR, MNG,. CO,

Vs. MIN. SEP ABS

PATENT OFFICE.

LTD. ET Al..

HENRY LIVINGSTONE SULMAN, HUGH FITZALIS KIRKPATRICK-PICARD,

AND JOUN BALLOT, OF LONDON, ENGLAND.

ORE CONCENTRATION,

No. 835,120,

Specification of Letters Patent.

Patented Nov. 6, 1906.

Application Sled May 20, 1906. Serial No. 262,880.

To all. whom it may concern:

Be it known that we, Henry Livinastone:

Sutman, Huo Frrzauis Kiaxratricx-Pic-

arp, and Joun Batvor, subjects of the Kin

of England, residing in London, England,

have invented certain new and useful Im-

provements in Ore Concentration, of which

the following is a specification.

This invention relates to improvements in

the concentration of ores, the object being to

separate metalliferous matter, graphite, and

the like from gangue by means of oils, fatt

acids, or other substances which have a pref-

erential affinity for metalliferous matter

over gangue.

In the process described in the previous

United States patent, No. 777,273, granted

to A. E. Cattermole, an amount of oil vary-

ing from four per cent. to six per cent. of the

weight of metalliferous matter present is agi-

tated with an ore pulp, so as to form gran-

ules which can be separated from the g: e.

In the previous United States patent, No.

777,274, granted to A. E. Cattermole and

others, a similar method of separation is em-

ployed, oleic acid being produced in situ in

the ore pulp.

We have found that if the proportion of

oily substance be considerably reduced — say

to a fraction of one per cent. on the ore--

granulation ceases to take place, and after

vigorous agitation there is a tendency for a

part of the oil-coated metalliferous matter to

rise to the surface of the pulp in the form of a

froth or scum. This tendency is dependent

on a number of factors. Thus the water in

which the oiling is effected is preferably

slightly acidified by adding, say, a fraction

of one per cent. up to one per cent. of sul-

furic acid or other mineral acid or acid salt,

the effect of this acidity being te prevent

gangue from being coated with oily sub-

stance, or, in other words, to render the se-

lective action of the oil more marked; but it

is to be understood that the object of using

acid in the pulp according to this invention

is not to bring about the generation of gas fer

the pu of flotation thereby, and the

proportion of acid used is insufficient to

cause chemical action on the metalliferous

m present. Again, we have discov-

ered that the tendency for the oilysubstance |

to ninate through the pulp and the ra-

idity with which the metalliferous matter

Cocsmes coated is increased if the pulp is

warmed. The formation of froth is assisted

by the fine pulverization of the ore, and we

find that slime mineral most readily gener-

ates scum and rises to the surface, while

larger particles have less tendency to be in-

cluded in the froth. The proportion of min-

eral which floats in the form of froth varies

considerably with different ores and with

different oily substances, and before utilizing

the facts above mentioned in the concentra-

tionof any particular ore asimple preliminary

test is necessary to determine which oily

substance yields the proportion of froth or

scum desired.

The following is an example of the applica-

tion of this invention to the concentration of

a particular ore. An ore containing ferru-

inous blende, galena, and gangue consist-

ing of quartz, rhodonite, end garnet is finely

powdered and mixed with water containing

a fraction of one per cent, or up to one per

cent. of a mineral acid or acid salt, conven-

iently sulfuric acid or mine or other waters

containing ferric sulfate. To this is added «

very small proportion of oleic acid, (say from

0.03 per cent to 0.5 per cent on the weight of

ore.) ‘The mixture is warmed, say, to 30° to

40° centigrade and is briskly agitated in a

cone mixer or the like, as in the processes

previously cited, for about two and one-half

to ten minutes, until the oleic acid has been

brought into efficient contact with all the

mineral particles in the pulp.

When agitation is stopped, a large propor-

tion of the mineral present rises to the sur-

face in the form of a froth or scum which has

derived its power of flotation mainly from

the inclusion of air-bubbles introduced into

the mass by the agitation, such bubbles or

air-films adhering only to the mineral parti-

cles which are pee | with oleic acid. The

minimum amount of oleic acid which can be

used to effect the flotation of the mineral in

the form of froth may be under 0.1 per cent.

of the ore; but this proportion has been

found suitable and economical.

If the ore were crushed to ninety mesh to

the linear inch, (half of which ore will pass

through one hundred and fifty mesh sieve,)

the froth may contain about seventy per cent,

to eighty per cent. of the metalliferous matter

contd de Ae deeidadiindioll Pe CeIn CAB

NERVE PBR, NE AE OR am em Ar

$5

~

105

af & ewe. Py froth is removed

; spitzkast, upeast, skimming

Toniaing ot Saorwiee After subsidence the §

oil-coated inetalliferous matter removed as

froth is separated from any liquid which may

have accompanied it and treated with a dilute

solution of caustic alkali, which removes the

oleic acid in the form of a solution of soap.

If desired, the oleic acid used in the

> instance may be produced in situ in the pul

by decomposing a dilute soap solution wit

mineral acid, as described in the previous

pategt, No. 777,274, cited above. he oleic

acid or other fatty acid forming the coating

on the metalliferous matter which produces

the froth may give rise to insoluble soaps on

the surface of the metalliferdus matter if solu-

ble lime, iron, or other salts are present in

small quantity during the production or on

> the wos! down of the froth with glkali.

Such insoluble soaps are difficult to remove

‘and are capable of adhering to air and caus-

ing flotation, much the same as the fatty

acids.do

The mefalliferous matter which did not

form — of the froth (generally the larger

particles) remains in admixture with the

in the pulp. To recover this, the

pulp is distributed in a thin layer on @ shak-

ing-table, convex buddle, or like, where-

on the mineral is exposed to a free-air sur-

face which ex may be increased by the

ication of air-blast or air-jets or the like

ther: .ftcr brought onto the edge or sur-

5 face of liquid, whereby the metalliferous mat-

ter floats and is separated from the gangue,

which sinks, as described in the specification

of our pores United Sota. application

Serial No. 246,637, filed February 20, 1905.

> The proportion of mineral recovered in the

froth and that recovered by table flotation

‘may be considerably varied; but, generally

speaking, the froth will separate the slime

minefal while the larger particles are re-

5 covered by the latter method.

_ In the accompanying drawings, Figure 1

is a diagram in perspective illustrating one

form of apparatus suitable for carrying this

_ invention into practice, and Fig. 2 represents

so in perspective an agpantin or carrying out

a secondary step in the process. ii

‘Referring to Fig. 1, a mixing vessel A (of

which there may be any number in series) is

provided with a rotatable stirrer B. Crushed

iss ore is fed from a hopper C into the vessel b

aband D. A pipe E, controlled bya tap FE’,

delivers circuit-water to the veasel, and oleic

acid of other oil is introduced through the

pipe F and tap F = The outer cock G from

fo the vesse] A communicates through a swan-

neck pipe !I with the froth separating appa-

ratus. In passing from the frothing appara-

tus A wo the spitzkasten (say between é and

‘K) the pulp may, if desired, be run in a thin

~~

wn

685,190

bs: layer gver a smooth Slightly-inclined plane.

.

The froth-separating apparatus comprises

beveral (say three) pointed boxes J’ J’ J’!

which open at the top into a honzontal chan

nel consisting of side walls K. The channel

has a narrow inlet K’ and spreads out to a’

wide outlet K' The pointed boxes J’ J'

have fullway-cocks L’ L’ L’ at the bottom,

leading to swan-neck discharge-pipes M’ M’

M’. An upeurrent of water may be led in at

the bottom of each box through a tap N’ 7¢

N* N?.

The boxes are al} filled with circuit-water.

The pulp from the vessel A is distributed hori-

zwntally from the flat trough.O through the

inlet K’. The heavy sands and coarser par- 8

ticles of mineral sink into the first box J’,

from which they are led to a shaking-table,

convex buddle, or the like, to be treated as

above described. The ae or medium

sands fall into the box J’, and if they contain 8;

any mineral may be removed for further ‘

treatment by agitation. The upcurrent of

water from the taps N’ N* ty the de

osition of any slime in these boxes. e

fine sands or gangue slumes settle in the last gc,

box J’, from which they are discharged to

waste or further treatment.

The slime mineral in the form of froth or

scum floats from the liquid and is carried by

the stream over the outlet K* into a launder ‘95

P and thence to a filterQ, where the metal- —

liferous matter is removed from the circuit-

water, which is returned to the vessel A bya

pump R. ‘The circuit-water may be brought /

to the proper temperature by passing it

through a heater S, having a burner S’, before

admittgng the waler to the veasel A.

An alternative method for the recovery of

any sunk-viled metalliferous matter which

may be deposited in the second and third_ os

spitzkasten is as follows: The produets sus-

pended in circuit liquor are removed from,

the spitzkasten and placed in a vessel in

which they are submitted to an additional

pressure of air or other gas of from, say, one 110

to two atmospheres or over. relief of

such pressure the bubbles of air or other gas,

so generated thro t the mass at once

sweep to the surface thereof all the metallif-

erous matter in the form of a froth which can 115

be separated as before. This idea is not

claimed broadly in this case, but fotins the

subject-matter of an application filed by us

on January 9, 1906, Serial No. 295,326.

Referring to Fig. 2, a mixing vessel @ (of 20

and in cases where oil is used the oil is intro-

which there may be several in series) is pees

duced through the pipe d in quantity out

cient to p three

vided with a rotatable stirrer ) Crus

uce a thin coating of oil on

ore or similar finely-divided mineral is fed

minéral particles for which oi an affinity: ,

into the vessel a. A pipe ¢, controlled by #

tap ¢’, delivers circuit-water to the v 1

The pulp mixed with oil escapes over.

MM

ro After the la

25 course under atmoepheric pressure.

yo or froth

40

50

c:)

we

lip of the discharge-conduit a’ and passes

through the pipe a’ toa pumpe — Hence the

pulp is pumped through discharge-pipe

inte the closed chamber f, which is con-

s structed to withstand a considerable internal

‘pressure and is provided with « safety-valve

}. the pressure-gage f’, and a gage-glass f'

to um-hicate the level of the pulp inthecham-

ber An outlet-pipe g, having a cock g’,

10 leads to a series of spitzkasten A, filled with

cucu’ -water

| The operation ts as follows: The cock g’ is

closed. Pulp is pumped into the chamber /,

which contains air or ot her gas, and the

1g pumping is continued until the pressure in

the chamber rises to, say, fifty to one hun-

dred pounds per square inch. The pressure

is sufficient to cause the air or other gas to be

dissolved to a considerable extent in the pulp.

of a few minutes for the due

solution of the compressed air or a portion of

it by the pulp or the liquid the cock g’ is

opened and the pulp is discharged into the

open spitzkasten A, where the liquid .<

e

pulp ¢ may be stopped during this discharge.

The whole of the mineral to which air bub-

bles are attached—say the oiled nineral-at

once rises to the surface aa a coherent scum

A surface current of water is

maintained in the spitzkasten, and the float-

ing material is thus removed and separated

from the gangue, which remains sunk or sus-

pended in the liquid.

The nature and arrangement of the appa-

ratus used may be varied without departing

from this invention.

» What we claim as our invention, and desire

to secure by Letters Patent, is—

1. The herein-described process of concen-

trating ores which consists in mixmg the

powdered ore with water, adding a small pro-

portion of an oily liquid having a preferential

affinity for metalliferous matter, amounting

to a fraction of one per cent. on the ore), agi-

tating the mixture until the oil-coated min-

eral matter forms into @ froth, and separat-

ing the froth from the remainder by flota-

ion.

2. The herein-described process of concen-

trating ores which consists in mixing the

powdered ore with slightly-acidified water

adding a small proportion of an oily ligui

having a preferential affinity for metallifer-

ous matter (amounting to a fraction of one

per cent. on the ore), agitating the mixture

until the oil-coated mineral matter forms

into a froth and separating the froth from the

, Temainder by flotation.

3. The herein-described process of concen-

trating ores which consists in mixing the

powdered ore with slightly-acidified water,

‘adding small proportion of an oily liquid

having o preferential affinity for metallifer-

6ious matter (amounting to a fraction of one

BST RES OM i RED HEH

BUTTE & SUPR, MNG. CO. VS. MIN. SEP., LTD., EY AL.

686,120

NOE AN ON 9 4

567

per cent. on the ore), warming the mixture,

agitating the mrxture until the oil-coated

miuneral matter forms into a froth and sepa-

rating the froth from the remainder by flota-

tron

4. The herein-deseribed process of concen-*

trating ores which consists in finely powder-

ing the ore, mixing it with shlightly-aciditied

water, adding a small proportion of an oily

substance having a preferential aflinity for

metalliferous matter (amounting to a frae-

tion of one per cent. on the ore), warming the

mixtufe, agitating the mixture until the oil-

coated mineral matter forms ute a froth,

separating the froth from the remainder by

flotation, and removing the oily coating

from the nineral.

5. The herein-described process of concen-

trating ores which consists in mixing the

powdered ore with water, adding a small pro-

portion of oleic acid amounting to 0.02-0.5

per cent. on the ore, agitating the mixture

until the oleic acid has been brought into effi-

cient contact with the mineral and has

formed a froth therewith, and separating the

froth from the remainder by flotation.

6. The herein-described process of concen-

trating ores which consists in mixing the

powdered ore with water containing a frac-

tion of 8ne per cent. of sulfuric acid, adding a

small proportion of oleic acid amounting to

0.02-0.5 per cent. on the ore, agitating the

mixture until the oleic acid has been brought

into efficient contact with the mineral and

has formed a froth therewith,'and separating

the froth from the remainder by flotation.

7. The herein-described process of concen-

trating ores which consists in mixing the

powdered ore with water containing a frac-

tion of one per cent. of sulfuric acid, adding

a small proportion of oleic acid amounting to

0.02-0.8 per cent. on the ore, warming the

mixture to 30°-40° centigrade, agitating the

mixture until the oleic acid has been brought

into efficient contact with the mineral and

has formed a froth therewith, and separating

the froth from the remainder by flotation.

8. The herein-described process of concen-

trating ores which consists in finely powder-.

ing the ore, mixing it with water containing a

fraction of one

ing sufficient oleic-soap solution to produce

oleic acid amounting to 0.02-0.5 per cent on

the ore, warming the mixture to 30°-40°

centigrade, agitating the mixture until the

oleic acid has

tact with the mineral and has formed a froth

therewith, separating the froth from the re-

mainder by Rotation, filtering off the froth

and removing the oleic acid therefrom bye

treatment with an alkali

9. The process of concentrating powdered

ores which consists in separating the mineral

fronr the gangue by coating the mineral with!

oil in water containing a small quantity of

SOIC RSM OAR eat

POLAR OTP PRPS AE

rvent. of sulfuric acid, add-"

n brought into eflicient con-*

568 BUTTE 4 SUPR, MNG. CO. V8. MIN. SEP., LTD., BT AL.

954 686,190

‘of agitating the mixture to form « froth, | ing, Hoss than one cent. of sulfuric acid

and se the froth ing sufficrent solution to pro

' 10. The process.of concentrating powdered — duce oleic acid amou to 0.02-0.5 My |

_ores which consists in separating the mineral cent. on the ore, warming the mixture to 90°.

's from the gangue by coating the mineral with 40° centigrade, agitating the mixture until

oil in water containing # small quantity of oil, | the oleic acid has brought into efficient

warming the mixture, agitating the mixture | contact with the mineral and has formed «

to form a froth, and separating the froth,

It The process of Apert S| yet

to “ores, which consists in separating the mineral

from the gangue by coating the mineral with

oil in water containing # small quantity of oil,

and a qugatity of acid insufficient to cause

chemical action on the metalliferous miner-

ts als present, agitating the mixture to form «

~~ froth, and separating the froth.

12. The process of concentrat ong poweenee

ure which consists in separating the minerals

from gangue by coating de minerals with oil

20 in water containing a fraction of one per cent

of oil on the ore, agitating the muxture to

cause the oil-coated mineral to form a froth,

and separating the froth, from the remainder

of the mixture.

25 13. The herein-desermbed process of con-

“*centrating ores which consists in finely pow-

dering the ore, mixing it wath water contain: |

froth with the finer mineral, distribu

mixture on the surface of « current

running over columns of water, so

pow pd minerals oot sands, the Ly

and the gangue slimes successively deposit

out while the froth is floated pe by the #

current, filtering off the froth and

the oleic acid

> s

Pr

Fir

7

“

In testimony whereof we have signed our:

names to this specification in the presence of |

two subscribing witnesses,

HENRY LIVINGSTONE SULMAK

MCOM PITZALIS KIREPATRICE-PICARD.

_ JOHN BALLOT

Witnesses:

Gro. J. B. Fran xu,

T. J, Oaman,

a ——

PUTTE 4 SUPR. MNG. CO VS. MIN. ©EP., LTD., ET AL. hao

a Comrpiarsants’ Exuiner.

Ansignment.

United States, No, 835,120.

Wherens, we, Hem» Livingstone Sulman and Hugh Fitzalie Kirk-

mtrick-Pieard, both of 44, London Wall, in the City of London,

‘nglend, Metallurgiets, and John Ballot, of 62, London Wall, in

the City of London, England, Merchant, did obtain Letters Patent

in the United States for “lmprovement in Ore Concentration,” which

Letters Patent are numbered 835,120 and bear date the 6th day of

November One thousand nine hundred and «ix.

And whereas we are now the sole owners of the snid Letters latent

and all rights under the «ame,

And whereas Minerale Separation Limited, of 62, London Wall,

in the City of London, England, is desirous of acquiring the entire

interest in the same,

Now therefore to all whom it may concern, be it known that for

and in consideration of the «am of One Dollar to us in hand paid,

the receipt of which ix hereby acknowledged, we the said Henry

Livingstone Sulman, Hugh Fitzalie Kirkpatrick-Picard and John

Ballot have sold, asigned and transferred and by these presents do

ell, axign and transfer unto the enid Minerals Separation Limited

the whole right, tithe and interest in and to the said “Tin-

0) provements in Ore Concentration” and in and to the Letters

Patent therefor aforesnid: the same to be held and enjoved

by the ssid Minerals Separation Limited for ite own use and behoof

and for the use and behoof of its legal representatives, to the full

end of the term for which said Letters Patent are or may be granted,

as fully and entirely as the same would have been held and enjoyed

by ux had thie Asignment and Sale not been made.

In testimony whereof we have hereunto set our hands and affixed

our Seals at London, England, this seventh day of December, 1909

HENRY LIVINGSTONE SULMAN. [1 «]

HUGH F, K. PICARD. {u. *.]

JOHN BALLOT. [u. #.]

2 Witnesses

HARRY SHIRLY.

H.C, HANKINS,

Crry or Loxpox, EXa.ann,

Kingdom of Great Britain and Ireland, sa:

Before me personally appeared Henry Livingstone Sulman, Hugh

Fitzalis Kirkpatrick Picard and John Ballot, to me personally known

— —

a

570 BUTTE 4 SUPR, MNG. CO. V8. MIN, SEP., LTD, ET AL.

and known to me to be the individuals described in and who

O57 ~—s executed the foregoing instrument, and they severally ac-

knowledged to me that they executed the «ame for the uses

and purposes therein set forth and that the same was their free act

and 4

Witnew my hand and official seal at London, England, this

Eighth day of January, A. D, 1912.

[Seal of U.S, Cons-late. |

RICHARD WESTACOTT,

Vier and Deputy Consul-Ceneral of the United

States of America, London, England.

(American Consular Service Fee Stamp $2.00.)

Department of the Interior.

United States Patent Office.

Received and recorded on the 28th day of August, 1911, in Liber

Y, 87, page 80 of Transfers of Patents.

In testimony whereof, T have caused the seal of the Patent Office

to be hereunto affixed.

[Seal of United States Patent Office. |

kK. B. MOORE,

Commissioner of Patents,

958 ComPpLatnane” Exnunrr,

License Agreement.

(A.)

This agreement, made the tenth day of October, One thousand

nine hundred and ten, between Minerals Separation Limited, having

ite registered Office at 62 London Wall in the City of London (here-

inafter called “the Company”), of the one part, and Minerals Sep-

aration American Syndicate, Limited, having its registered Office

at 62 London Wall aforesaid (hereinafter called “the Syndicate”),

of the other part whereas the Company are the owners of various

processes for the separation of minerals from gangue covered by

patents taken out in the United States of America and in the Do-

minion of Canada, short particulars of which are contained in the

Schedule hereto, and whereas the Syndicate has been formed for

exploiting and for conducting experiments for the treatment of ores

by the Company's said —y in the United States of America

and Dominion of Canada, and also for acquiring and turning to

“ ——

rT

profitable account ores, tailings, dumps and also mining and other

properties believed to contain minerals amenable to treatment by

the Company's processes with a view to utilizing such processes in the

' United States of America and Dominion of Canada in connection

therewith and of securing options of purchase of ores, tailings, dumps

and mining and other suitable properties or substantial interests

therein and otherwise giving effect to the objects of the Syndi-

050 — cute as defined by its Memorandum of Association, and where-

as the Syndicate has been registered in England under the

Companies (Consolidation) Act of 1908 with a nominal capital of

Fifty-two thousand five hundred pounds divided into Fifty thousand

“A” shares of One pound each and Fifty thousand “B” shares of

One shilling each, and whereas by the Syndicate’s Articles of Asso-

ciation it is provided that the Syndicate shall enter into and carry

inte effect an Agreement therein referred to being these presents,

‘ now it ix hereby mutually agreed between the parties as follows:

1. For the consideration hereinafter appearing the Company doth

hereby give and grant unto the Syndicate (1) the sole and exclusive

right license power and authority to apply use and exercise in the

United States of America and in the Dominion of Canada, but not

elsewhere, all or any of the inventions, processes, apparatus, plant or

nuchinery deseribed in the Specifications of the Letters patent of

the United States of America and of the Dominion of Canada shortly

described in the Schedule hereto for the term of two vears from the

date hereof, subject nevertheless to any compulsory licenses which

may be granted pursuant to the order or direction of any Court of

j Law or other competent authority in either of the said countries,

but so that any revalties or other considerations payable under any

| such compulsory licenses shall belong to and be divisible and

Wi) payable as follows: So much of the same as arises and is

payable in respect of the said term of two years or other the

period during whieh the License hereby granted is in force (or in

the case of a lump sum consideration so much thereof as is fairly

apportionable to the said term or period) shall belong and be paid

to the Svndicate and the balance shall belong to the Company,

provided that in the event of the said Letters patent being

purchased under the option hereinafter given to the Syndicate

and of the said purchase being duly completed the Company shall

BUTTE 4 SUPR, MNO. CO. VS. MIN. SEP., LTD, ET AL. 571

assign and make over to the new Company hereinafter referred to

the portion of the said royalties and consideration belonging to the

Company as aforesaid (2) The option or right to purchase the said

American and Canadian Letters patent under and in accordance

with Clause 15 hereof,

' 2. The Company will at any time during the said term grant to

any person, firm or Company nominated by the Syndicate for the

purpose and approved by the Company (such approval not to be

unreasonably withheld) full license and liberty to use the said

processes in the United States of America and in the Dominion of

Canada, but not elsewhere in the treatment of ores obtained from

properties to be specified in the said License upon such terms as may

from time to time be mutually agreed between the Company and

al ed ren Oe

572 BUTTE & SUPR. MNG. CO. VS. MIN. SEP., LTD., ET AT.

the Syndicate, but the Syndicate shall not be entitled to.

961 assign the license hereby granted or any of Hts benefits here-

under or to grant sub-licenses without the consent of the

Company first obtained and any consideration payable to the Syndi-

cate under any licenses to be granted under this Clause shall be

carried into the account referred to in Clause 5 hereof and be reck-

oned in such account in ascertaining the half share of net profit pay-

able to the Company as provided in such clause and every license

shall inure for the benefit of the Company after the expiration of said

term of two years or after the determination of the license hereby

granted before the expiration of such term. Any rovalty or other

consideration payable to or receivable by the Company under any

license to be granted under this Clause shall belong and be divisible

and payable to the same persons and in the same manner as is pro-

vided in Clause 1 hereof with reference to royalties or other considera-

tions payable or arising under compulsory licenses.

3. Part of the consideration for the exclusive license and the other

rights and interests hereby granted to the Syndicate by the Company

shall be the sum of Seven hundred and fifty pounds which shall be

satisfied by the allotment forthwith to the Company or its nominees

of Fifteen thousand fully paid “B” shares in the capital of the Syn-

dicate of One shilling each.

4. As further part of the said consideration for the said License

the Company shall be entitled to a further One thousand seven hun-

dred and fifty pounds to be paid and satisfied from time to

962 time by the allotment to the Company or its nominees of one

fully paid “B” share for every “A” share that may be sub-

scribed for from time to time in addition to the Fifteen thousand

“A” shares which are to be subseribed for forthwith the intention

being that when the Fifty thousand “A” shares are subseritbed for

the Company shall be entitled to the Fifty thousand “B” shares of

One shilling each fully paid.

5, As the residue of the consideration for the said License the

Syndicate agree that during the said term of two vears the Syndicate

will use their best endeavor to apply and turn to profitable account

in the United States of America and in the Dominion of Canada the

processes and inventions covered by the said patents and in partic-

ular to secure and deal with in terms of the Memorandum of Asso-

ciation of the Syndicate options (calculated to yield profit) upon

mines ores dumps tailings slimes and other suitable mining products

and to secure users of the said processes on license for royalties or on

profit sharing basis or otherwise and that the Syndicate will keep

proper books of account and make proper and _ sufficient entries

therein of all business and all receipts and property of the Syndicate

and in particular of all matters and transactions relating ‘and inei-

dent to the application and working of the said processes and inven-

tions or any of them under this Agreement and the payment

963 of royalties and other considerations to the Syndicate and

that all such books of account and all documents relating to

the business of the Syndicate shall at all times be open to inspection

and examination by the Directors of the Company and their repre-

™

rs

azentatives who shall be entitled to make such copies and extracts

thereof and therefrom as the said Directors and their representatives

shall from time to time require and that the Syndicate will at least

once during every. calendar month of the said term of two years

BUTTE & SUPR, MNG. CO. Vs. MIN, SEP., LTD., ET AL. 573

furnish and send to the Company a written report containing par-

ticulars of all mines mineral products options and properties to which

any of the said processes may be applied or which may be aequired

or disposed of by the Syndicate whether any of the said processes

shall be applied thereto or not and the results of the Syndicate’s

) operations with regard thereto and that the Syndicate will within

thirty days after every tenth day of April and tenth day of October

| during the said term of two years send to the registered Office of

the Company a full and detailed account of the business carried on

and royalties and other considerations and moneys received by the

Svndieate and outgoings and expenses incurred by the Syndicate

( during the half years respectively ending on the dates before men-

tioned and showing the net profit earned by the Syndicate for such

half year and that the Syndicate will at the same time pay to the

Company one half of the net profit earned by the Syndicate during

each such half vear as royalty and additional consideration

“64 for the granting of the License hereby granted provided

} that the Company shall give credit to the Syndicate on receipt

of the said half of the net profit for all sums receivable by the Com-

pany by way of dividend on the said “B” shares held by the Com-

pany the intention of these presents being that the Company shall

| receive one half of all net profits made by the Company from what-

soever source and that if the Syndicate shall duly pay the said half

of the net profit the Company shall pay to the Syndicate or allow to

them in account all sums receivable by the Company by way of

dividend on tlie said “B” shares as aforesaid in respect of the period

for which the said half of the net profit has been paid and further

that if the Syndicate shall not purchase the said Patents under Clause

13 hereof or if this license shall be determined before the expiration

of the said term of two years the Syndicate shall at the end of the

said term or on the earlier determination of this license deliver to

the Company all the Syndicate’s hooks of account and all documents

belonging to it in any way relating to the said processes and inven-

tions including all deeds or agreement of license in the Syndicate’s

possession and that all such books and documents shall thereupon

hecome the absolute property of the Company.

6. And it is hereby mutually agreed that in case any question or

dispute shall arise between the parties hereto as to the amount of the

profits from time to time earned by the Syndicate or as to any

965 matter of account between the parties hereto such question or

dispute shall be determined by the Auditors for the time

heing of the Company whose Certificate in writing relating thereto

shall be conclusive and binding upon both parties.

7. The Syndieate shall not without the written consent of the

Company during the said term of two years or at any time thereafter

directly or indirectly use or employ or be in any: way party or privy

to the using or dealing with any process or processes for the concen-

ee

“SRR a rete PEPER LISTON LEI SE SOE LIS LIE EN LOE YER LI BAS I SEL, ROR NR

57 BUTTE & SUPR. MNG. CO. VS. MIN. SEP., LTD., ET AL.

tration of ores by flotation methods of separation of products of con-

centration from one another Lelonging to or held or worked by any

other Company Corporation Syndicate or person but shall exclu-

sively use deal and be interested in the process or processes patents

and inventions of the Company.

8. The Syndicate shall not at any time during the said term of

two years or at any time thereafter and whether the license hereby

granted shall be determined Lefore the expiration of such two years

or not dispute the validity of any of the patents or patent rights be-

longing to the Company nor in any manner support any litigation

against the Company nor shall the new Company hereinafter men-

tioned at any time hereafter dispute :uch validity or in any manner

support any such litigation as aforesaid.

%. The Syndicate hereby agrees with the Company that

966 the Syndicate and the new Company mentioned in Clause 15

hereof will so long as the term of any of the said scheduled

patents or of any patent in the United States of America or the

Dominion of Canada for any improvement thereon or addition

thereto Lelonging to the Company or the Syndicate shall continue

forthwith from time to time communicate to the Company and

transfer to it the sole and exclusive benetit of any improvement in

or addition to the said inventions or processes or any discovery me-

chanical or otherwise useful in connection therewith which the Syn-

dicate or the new Company or their respective servants agents and

workmen may make devise or discover during the continuance of

this Agreement and will give to the Company full information as

to the exact mode of working and using the same and will from time

to time at the request and expense of the Company but without

making any charge therefor execute and do all such documents and

things as may be requisite for the purpo e of enabling the Company

in its own name to obtain patent: or protection for such improve-

ments or discoveries in this or any foreign Country and will from

time to time during the continuance of this Agreement gratuitously

give all such advice explanation and instruction to the officers and

workmen of the Company as may be neeessary to enable them etlee-

tually to exercise work and utilize such improvements and discov-

eries as aforesaid but any such patent granted to or vested in the

Company in respect of the United States of America and the

967 Dominion of Canada shall be subject to the license hereby

granted in the same manner in all respects as the Patents

mentioned in the Schedule hereto.

10. The Company will during the continuance of this Agreement

at the request and expense of the Syndicate give to the Syndicate all

such technical advice and assistance as they may reasonably require

in connection with all of the said processes of the Company and the

methods of working the same.

11. If at any time or times hereafter during the said term of two

years so long as the license hereby granted shall subsist or (in case

the Syndicate shall exercise the said option to purchase) at any time

during the terms of any of the said Patents the Company shall ac-

quire or otherwise become possessed of or interested in any improve-— , |

. }

PRES RM DA eT ae he s. -

3 PT ELE OPI T Ege pope RI GE gt iuntiiaieianaan

BUTTE & SUPR. MNG. CO. VS. MIN. SEP., LTD., ET AL. 575

ment or improvements upon the inventions the subject matter of the

existing Letters Patent or the mode of using or applying the said

processes then and in every such ease the Company shall forthwith

communicate such improvement or improvements to the Syndicate

and give to the Syndicate or its duly appointed officer or officers full

and sufficient information instructions and assistance respecting the

mode of working and using any such improvement or improvements

and the Syndicate shall be entitled (so far as the Company shall be

legally competent to confer such right) to use and exercise

6S the same in the United States of America and in the Dominion

of Canada but not elsewhere without any further payment

or compensation except actual and pocket expenses to the Company

in respect thereof and if the Company shall be entitled to confer the

right to do so and the Syndicate shali duly exercise its said option to

purchase the said Scheduled patents the Syndicate shall be entitled

to Letters Patent for the United States of America and the Dominion

of Canada but not elsewhere in respect of such improvements and the

Company will at the cost of the Syndicate or its assigns cause to be

done all such acts and things as may be necessary for obtaining such

Letters Patent as the Company shall be entitled thereto and for vest-

ing the same in the new Company hereinafter mentioned.

'2. The Syndicate shall during the said term of two Years pay all

necessary fees for keeping the said patents and patent rights in force

and if during such term any infringement of any of the said Letters

Patent shall come to the knowledge of either party hereto such party

shall forthwith give notice of such infringement to the other but it

shall not be obligatory on either party to take proceeding to restrain

or recover damages in respect of such infringement or otherwise for

defending or upholding any such patents,

13. For the considerations before mentioned the Syndicate shall

be entitled at any time during the said term of two years unless the

license hereby granted shall have been previously determined

969 to purchase all the said Patents of the United States of Amer-

ica and Dominion of Canada and the Company if the Syndi-

cate’s option shall be duly exercised will sell such patents accordingly

upon the conditions following:

(a) The consideration for such sale shall be a sam payable in

fully paid One pound shares of a New Company to be registered by

the Syndicate in England te acquire the said Patents equal to one

haif of the total registered nominal capital of such new Company

which shall be accepted in substitution for all the Company’s rights

in respect of “B” shares in the Syndicate of One shilling each then

held by them or their nominees except the right to participate in

surplus assets on any distribution in a winding up of the Syndicate.

(+) The total nominal capital of the said new Company shall be

not less than two hundred thousand pounds and such capital shall

be divided into shares of One pound each and at least one fourth of

the total nominal capital of such new Company shall on or before

completion of the sale be allotted to responsibe persons on subserip-

tions for payment in full of eash free of all deduction in respect of

underwriting commission or other charges or expense of any kind.

tere ce tererrrccennen 2 fa RDN SER TMNT ee , : ELC SE

3

6 BUTTE & SUPR. MNG. CO. VS. MIN. SEP., LTD., ET AL.

cr

(c) At least one half of the first Directors of the New

970 Company shall be nominated by the Company (party hereto)

and the Memorandum and Articles of Association of the new

Company shall be in such form and shall contain only such clauses

as shall be approved by the Company (party hereto) and in the case

of any difference or dispute arising between the parties hereto re-

specting the terms of such Memorandum and Articles such difference

or dispute shall be determined by reference to arbitration under

clause 16 hereof.

(¢) The Syndicate shall send to the Company’s registered ad-

dress at least three calendar months’ notice in writing of their inten-

tion to exercise the option to purchase such notice to expire on or

before the end of the said term of two years.

(¢) Upon completion of the said sale the said patents or such of

them as shall then subsist and such right to improvements as the

Syndicate may be entitled to under this Agreement shall be duly

assigned or vested in the said new Company and the new Company

shall in such Assignment enter into a covenant with the Company

(party hereto) to carry out the obligations of clauses 8 and 9 hereof

xo far as such obligations are to be observed by the new Company.

(f) In case when the notice shall be given by the Syndicate under

sub-clause (d) of this clause or thereafter prior to completion

971 of the purchase any legal proceedings shall be pending re-

lating to the validity of any Letters Patent of the United States

or the Dominion of Canada for the time being subject to this Agree-

ment or to any alleged infringement of any such Letters Patent in

which proceedings the Company shall be a party as Plaintiff De-

fendant Petitioner or otherwise the Syndicate shall procure the new

Company on or before completion of the purchase to pay to the Com-

pany (party hereto) all costs and expenses which the last named

Company may have incurred or for which it may be liable and to

enter into a sufficient covenant to pay and discharge and indemnify

the Company (party hereto) against all costs and expenses which

may thereafter be incurred or which the Company (party hereto)

may become liable to pay in or in respect of any such proceeding.

(g) The said sale shall be made subject to any license which may

be granted under clause 2 hereof but the new Company shall after

the said sale be entitled to the royalties or other consideration pay-

able under any such license.

(h) Unless the said purchase shall be completed upon the con-

ditions hereinbefore mentioned and on or before the expiration of

the said term of two years the said option shall cease and all the

agreements and obligations on the part of the Company under

972 this Agreement shall be at an end and for the purposes of

this cause time shall be deemed to be of the essence of the

Contract.

14. If the option to purchase contained in clause 13 hereof shall

not be exercised or if such purchase shall not be duly completed then

or if the said license should be determined before the end of the said

term of two years all improvements on or additions to any of the

said processes or inventions which may have been discovered or ac-

aman

y

(

~1

BUTTE & SUPR. MNG. CO. VS. MIN, SEP., LTD., ET AL. 5

quired by the Syndicate and all letters patent which may have been

granted or applied for or on behalf of the Syndicate and the full

right to apply for Letters Patent in respect of such additions and im-

provements in all Countries where such right may subsist shall be-

come the absolute property of the Company and the Syndicate shall

execute all such assurances as may be necessary to vest the rights to

such additions and patents in the Company and in any such case the

Company shall have the right and option to take over from the

Syndicate all or any options and or rights for working mineral pro-

ducts belonging to the Syndicate and the benefit of all contracts

which may have — entered into by the Syndicate for such purpose

and all or any mines, ores and other mineral products which may

have been acquired by the Syndicatelat the price paid by the Syndi-

cate to the Vendors or Grantors thereof respectively such option to

be exercised as to all or any exclusively of the other of such

973 options rights contracts mines ores and other mineral

products by notice in writing to be given by the Company to

the Syndicate within six calendar months after the expiration of the

said term of two years or after the determination of the license hereby

granted as the case may be. Provided that if at the end of the said

term of two years or at the end of the further term of one year (in

case the said option shall be extended under clause 17 hereof) the

Syndicate shall be engaged in applying or using any of the inven-

tions process apparatus plant or machinery described in the speci-

fications of any of the said letters patent to or on any specifie prop-

erty or properties in the United States or in Canada and if the Syndi-

cate shall not exercise the option or right to purchase the said Amer-

ican and Canadian letters patent under the provision in that behalf

hereinbefore contained then the Company will if requested by the

Syndicate so to do grant the Syndicate a license to continue such

application and user of the said inventions processes apparatus

plant or machinery at or on the said specifie property or properties

but not elsewhere so long as the said letters patent or any of them

shall be kept on foot and such application and user be continued by

the Syndicate and such license shall be subject in all respects to the

provisions and agreements hereinbefore contained which are appli-

‘able during the term of two years from the date hereof so far as

such provisions can apply to such specific property or properties ex-

cept clauses 3 and 4 of this agreement and except that such

974 license shall provide in variation of the terms of clause 12

of this Agreement that during the continuance of the said

license the Company and not the Syndicate shall pay all fees neces-

sary for keeping the said patents and patent rights in foree and sub-

ject as hereinafter appears but including the agreement for the pay-

ment to the Company by the Syndicate of one half the net profits

of the Syndicate by way of Royalty and so that such expression “net

profits” and its application to the terms of the license so to be granted

shall be deemed to mean the Syndicate’s entire net profits and not

only the net profits attributable to such specific property or properties

as aforesaid and such license shall also contain a covenant by the

37—Ree.

ae PEL gE I TCR TOURIST STFU ENS BRT IR OR RRO RO RO tet ot

578 BUTTE & SUPR. MNG. CO. VS. MIN. SEP., LTD., ET AL.

Syndicate that if after all the said letters patent shall have expired

or shall have ceased to be kept on foot the Syndicate shall continue

the application and user of the said inventions processes apparatus

plant or machinery at or upon any property to which the said license

shall apply the Syndicate will continue to pay to the Company one

half of its net profits as hereinbefore defined so long as such appliea-

tion and user shall be so continued by the Syndicate and also a cov-

enant by the Svndicate that the Syndicate before discontinuing such

user and application on or to any property ineluded in such license

wil’ give to the Company six calendar months’ previous notice of its

intention to discontinue the same and that until the expiration of

such six calendar months’ notice the Syndicate shall remain

975 — liable to pay to the Company one half of its net profits as

aforesaid earned up to the end of such six calendar months

whether such user and application shall or shall not have ceased prior

to the expiration of such notice Provided that the Syndicate shall

not after the end of the said option period of two or three years be’

entitled to require the Company to grant licenses under clause 2

hereof and that nothing in this clause shall affect the right of the

Company after such option period to retain any consideration paid

for a license granted under that clause Provided that the license to

Se granted with regard to the said specific property or properties shall

be a non-exclusive license and shall not prejudice or affect the right

of the Company to work any of the said inventions and processes

themselves or to grant other licenses to use and work the same Pro-

vided also that no such license as aforesaid shall renew or extend the

option to purchase under clause 13 hereof Provided also that any

specific property or properties as to which any such license as afore-

said may be granted under this clause shall be deemed to be excluded

from the option contained in clause 14 hereof so long as the Syndi-

vate shall continue to apply or use the said processes and inventions

or any of them to or on the said property or properties and the Com-

pany shall have the right to purchase any such property or proper-

ties under such clause within six months after the expiration of the

notice of the cessor of such application or user as hereinbefore ‘pro-

vided.

15. Provided always that if “A” shares of the Syndicate to

976 the nominal value of Fifteecen thousand pounds shall not

within six months from the date hereof be allotted to. re-

sponsible persons on subscriptions for payment wholly in cash or

if the Syndicate shall make default for the period of at least sixty

days in paying to the Company the amount of any sum certified

by the Company's Auditor to he due to the Company on account of

the profits of the Syndicate or if an effective resolution shall be

passed or a compulsory order shall be made for the winding up of

the Syndicate or if the Syndicate shall commit any breach or de-

fault of any of the agreements on its part herein contained or in the

case of a breach capable of being made good shall within thirty days

after it has been served by the Company with notice to do so neglect

or refuse to do so then the Company at any time thereafter and

notwithstanding any merely implied waiver by it of its right to do

—ae

BUTTE & SUPR, MNG. CO, VS. MIN, SEP., LTD., ET AL. 579

so may by serving the Syndicate or leaving at its registered office

a notice in writing for this purpose forthwith revoke and cancel the

license and option hereinbefore granted and thereupon the said

license and option shall be determined and the Company shall be

freed from all obligations and agreements on its part herein contained

or arising hereunder but without prejudice to any claim which the

Company might have against the Syndicate for its share under this

agreement of any of the profits of the Syndicate and which in such

case shall be payable by the Syndicate apportioned up to the date

of the revocation of the said license.

977 16, Subject as is hereinbefore provided with respect to mat-

ters which under clause 6 hereof shall be determined by the

Certificate of the Company’s Auditors it is hereby agreed that if and

so often as any dispute difference or question shall arise between the

Company and the Syndicate as to the meaning or construction or

the effect incident or eonsequence of this agreement or any part

thereof or any article or clause herein contained or otherwise relating

to the premises every such dispute difference or question shall be re-

ferred to Arbitration in England pursuant to the Arbitration Act

1889 or any statutory modification or re-enactment thereof for the

time being in force.

17. In the event of the Syndicate being desirous of having an

extension of the option hereby granted and of such desire shall give

to the Company notice in writing not less than three months prior

to the expiration by effuxion of time of the license granted by clause

1 hereof then the Company will on the Syndicate paying to the Com-

pany the further sum of Five thousand pounds in cash extend the

license and option hereby given for a further period of one year and

in such case this Agreement shall be read and construed as if the

license granted under clause 1 hereof had originally been granted for

three years instead of two,

As witness the respective Common Seals of the Companies parties

hereto.

BUTTE & SUPR. MNG. CO. VS. MIN. SEP., LTD., ET AL.

580

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582

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BUTTE & SUPR, MNG, CO, V8. MIN, SEP., LTD., ET AL.

oso Kinapom or Great Barrars ANd TRELAND,

City of London, England, sx:

Before me personally appeared Seth Gregory and Walter Williams

Webster, to me personally known, who being by me duly aud sever-

ally sworn, did cach depose and say that he is and was on October 10,

N10, a director of Minerals Separation, Limited, one of the cor-

porations deseribed in and which executed the above instrument, and

that Albert Owen Williams, is and was on October 10, 110, the

Secretary thereof, and did further each depose and say that he knew

the seal of the said corporation; that the seal affixed to said instru

ment was such corporate seal; that it was so affixed by order of the

Bourd of Directors of the said corporation on October 10, 110, and

that he then signed his name thereto by like order; and the said

Seth Gregory and Walter Williams Webster acknowledged the said

instrument to be the free act and decd of the said corporation,

Witness my hand and official seal at London, Englond, this Eighth

day of January, A.D. Ton,

[Seal of UL S, Consulate, |

RICHARD WESTACOTT,

View and Deputy Consul-General of the United

States of America, London, England,

(American Consular Service Fee Stamp $2.00.)

OS] Krixepom or Great Brrrars AND TRELAND,

City of London, England, ss:

Before me personally appeared John Ballot and Francis Lomax

Gibbs, to me personally known, who being by me duly severally

sworn, did each depose and say that he is and was on October 10,

1910, a director of Minerals Separation American Syndicate, Lim-

ited, one of the corporations deseribed in and which executed the

above instrument, and that Albert Owen Williams is and was on

October 10, 1910, the Secretary thereof; and did further each depose

and say that he knew the seal of the said corporation; that the seal

aflixed to said instrument was such corporate seal; that it was so

affixed by order of the Board of Directors of the said corporation on

October 10, 1910, and that he signed his name thereto by like order;

and the said John Ballot and Francis Lomax Gibbs acknowledged

the said instrument to be the free act and deed of the said corporation.

Witness my hand and official seal at London, England, this Eighth

of January, A. D, 1912.

[Seal of U. 8. Consulate. |

RICHARD WESTACOTT,

Vice and Deputy Consul-General of the United

States of America, London, England.

(Consulate General American Consular Service Fee Stamp $2.00.)

AS4 BUTTE & SUPR. MNG. CO. VS. MIN. SEP., LTD., ET AL.

982 COMPLAINANTS Exuutprr.

Stipulation.

United States District Court, District of Montana.

In Equity.

Minerats Seraratiox, Limrrep, and MINERALS SEPARATION

AMERICAN Synpteate, Limrrep, Complainants,

vs.

James M. Hyper, Defendant.

It is hereby stipulated that, pursuant to Clause 17 of the agree-

ment between Minerals Separation, Limited, and Minerals Separa-

tion American Syndicate, Limited, complainants herein (such license

agreement being in evidence as “Complainants’ Exhibit, License

Agreement”), the license and option to Minerals Separation Amer-

ican Syndicate, Limited, under the patents referred to in the schedule

annexed to said agreement, including the patent in suit, have been

extended for a further period of one year from October 10, 1912,

and that this stipulation shall have full force and effect as evidence

of that fact.

New York, N. Y., Dec. 2, 1912.

HENRY D. VILLIAMS,

Counsel for Complainants.

SHERIDAN, WILKINSON, SCOTT &

RICHMOND,

Counsel for Defendant,

Chicago, Ill., Nov. 29, 1912.

983 COMPLAINANTS’ EXuinit.

Abstract of Title.

Department of the Interior.

United States Patent Office.

To all persons to whom these presents shall come, Greeting:

This is to certify that the annexed is a true copy from the Digest

ot this Office of all Assignments, Agreements, Licenses, Powers of

Attorney, and other instruments of writing, found of record up to

and including September 18, 1911, that may affect Letters Patent

granted to Henry L. Sulman, Hugh F, Kirkpatrick-Picard and John

Ballot, London, England. Patent No. 835,120. Dated November 6,

1906. “Ore Concentration.” Searched from August 24, 1902.

—— ——

BUTTE & SUPR, MNG, CO, VS. MIN. SEP., LTD,, ET AL. 585

In testimony whereof I have hereunto set my hand and caused

the seal of the Patent Office to be affixed at the City of Washington

this twenty-ninth day of September, in the year of our Lord one

thousand nine hundred and eleven and of the Independence of the

United States of America the one hundred and thirty-sixth,

[Patent Office Seal. ]

' IK. HW. TENNANT,

Assistant Commissioner of Patents.

HENRY L, SULMAN,

HUGH F. KIRKPATRICK-PICARD ann

JOHN BALLOT.

a

Ys4 Instrument Dated Dee, 7, 1909, Recorded Aug, 28, 1911,

Liber Y. 87, Page 80,

Parties:

\ Henry Livingstone Sulman, TH. FL KK. Pieard, John Ballot to Min-

erals Separation, Limited, 62 London Wall, London, England,

Invention:

| Ore Concentration,

Noy. 6, 1906, 835,120,

These Assignors, stating that they own said letters patent, and all

rights thereunder, assign the whole right, title and interest in said

invention and letters patent. Consideration, $1.—

COMPLAINANTS’ Exuuprr.

Chapman Report, August 16, 1907,

The Sulphide Corporation Limited.

Central Mine,

Broken Hill, N.S. W. :

August 16th, 1907,

Theodore J. Hoover, Manager Minerals Separation, Ltd., London,

Dar Sir:

Zine Corporation, Ltd.

On Mr. Courtney's last visit to Broken Hill he instructed

985 me to report briefly on the working of the Granulation Process

t on the British Mine.

a fORACEONY ENR Pipe SVAD IELP MOB MI TT Wi MTT ONY AINA RE 90 eT WE NR HN

586 BUTTE & SUPR, MNG. CO. VS. MIN. SEP., LTD., ET AL.

Mr. Huntley's Regime—dating back to the time when Mr. Hunt-

ley was superintendent of the Zine Corporation's Broken Hill Works,

[ was taken over the Potter Process Plant erected under Mr.

Queneau’s instructions and according to his ideas. Mr. Huntley was

very anxious to try this plant with a little oil added to the agitation

without addition to the plant. 1 did not give much encouragement

to this proposal and finally, Mr. Huntley arranged for a nest of

agitators of our box type, together with spitz box separators of our

pattern. Work was then started with very encouraging results.

The plant was very weak in its feeding and crushing stages, and

I constantly advised that attention to the crushing department was

quite as important as to the treatment section, Seme attention was

heing paid to this until instructions were given that the plant war to

be run to test tonnages and grade of concentrates. The feed to

plant was therefore rushed and was execedingly irregular, but high

grade concentrates were recovered,

The increase of tonnage determined the weak points of the plant

after several weeks of annoying petty stops due to bad methods of

elevation and insuflicient boiler plant.

OS6 Operations under Mr. Mitehell’s Supervision.

It was at this time that Mr. Mitchell assumed charge of opera-

tions and various changes of the staff occurred. Again [| erm-

phasised the importance of crushing with regular feed of both grainy

material and slimes produced from crushing. [ was told that the

plant was merely an experimental one, and it was to be run only for

tonnage and grade of recovered concentrates. The management

were aiming at 900 tons per day and a 460 Zn.

High Tonnages.—This mad desire for tonnage irrespective of

recovery became the object of foremen and shift bosses, and nothing

was left undone to produce good tonnages. The breakages to plant

caused delays of S to 12 hours per day (average), so that when

plant was running it was rushed to such an extent that it was hardly

worth while putting the crude tailings through the crushing section.

Treatment Without Crushing and Irregular Feed,

Besides the feed from crusher section, an incline tramway and

conveyor belt delivered current British Mill Wilfley and Card table

tailings together with old dump slimes to the treatment section.

As regards size this feed was quite amenable to treatment, but here

the worst irregularities of the feed occurred, As trueks came up tre

inclined tram they were tipped into a hopper directly over the

987 — inelined belt. This feed to plant would last a few minutes

only, and while the trucks were being returned and loaded, no

feed from this source was delivered to the treatment section. —[ esti-

mated that the belt was delivering feed for treatment 209% of. its

time, and the remainder of the time no feed was going to the

agitators from this source. There is no need to state how difficult

it was to regulate the acid and oil feeds to ensure successful work,

Teen IP ee a hd eS Fe a Pe ai ane eee

—

BUTTE & SUPR. MNG. CO. VS. MIN. SEP., LTD., ET AL. 587

This was partially remedied by the introduction of one 5 ft. agi-

tator which delivered its agitated pulp to the mixers for treatment.

At the time when the matter of tonnages was obviously very

critical (the reason not being disclosed) shift bosses on several ocea-

sions had current British Mill jig tailings (unerushed) tipped as

Card and Wilfley tailings. As this was going on unchecked | called

the attention of the oflicials to this underhand method of getting

high tonnages, They promised to have it stopped, but this abuse

continued. 1, therefore, reported the matter to Mr. Mitehell, whp

promised that it should he stopped, but on making other visits to the

plant T saw that it continued, with or without the superintendent's

knowledge. | would add that the tailings from the jigs at British

Mill are a product of 3 mom. crushing and assay from 12% to

14 Zn.

Slimes from Crushing.—The regular feed of slimes produced

from crushing along with the grainy material was a matter that [

claimed had to be seen to early. No definite line of work,

988 however, was agreed upon, but the management were getting

interested in this proposition when the plant shut down,

Size of Feed.—This should have been reduced to 4 m/m. and

below, whereas sizing tests made gave 330 of the total feed over

1) mem. This oversize often reached 506, of the feed, and was

compoced of jig tails from the dump, and jig tails direct from British

Mill, the tails from the Card and Wilfley tables that were treated

being of a sufficient fineness not to require further crushing.

Results.—In spite of these adverse conditions, a very high grade

zine product was being produced and shipped, and satisfaction was

expressed by those in charge.

When the 500 tons per day limit had Leen reached and the plant

Was running smoothly, [ again suggested that more attention be

paid to crushing to ensure higher recoveries. Mr. Mitchell then ex-

pressed the opinion that finer crushing would not give better results,

and, no doubt, reported the same to his Board.

I was certain that this was the remedy of the trouble, and was glad

to know that the plant was to le given over to work on our own

crushing lines for a definite period.

As you know, when negotiations were being made the plant was

shut down without notice.

Yours faithfully,

GEO. A. CHAPMAN.

= MARR ION LOADS IE LATA PENI CMLL NIE AISA PEREZ AAC MY AE UNE AE HOE LIONS NS ARONA OR HOES RRS

588 BUTTE & SUPR. MNG. CO. VS. MIN. SEP., LTD., ET AL.

989 COMPLAINANTS EXHIBIT.

Higgins Report, January 4, 1911.

2 King John’s Court, FE. C.,

4th Jan., 1911.

Nessrs. Minerals Separation Limited, 62 London Wall, E. €.

DEAR SIRS:

Re “Tecolotes Slime Tails.” j

The tests made on this ore show that it is amenable to treatment

although low in metallic values; for this reason a high recovery

cannot be expected. The grade of the concentrates in zine i good,

especially in test No, 220 where no acid was used. The limit of the

zine assay in the concentrates calculated from the figures given is

44.5%. In my opinion the bulk of the insolubles in’ the cones.

resulted from the 2nd & 3rd treatments where only small bulks were

obtained, so that by eliminating these a higher grade concentrate |

should be obtained with a slightly lower recovery, unless the 2nd &

3rd cones. were retreated,

It is noteworthy that the grade of the concentrates obtained by

the use of Turpentine (Russian) is almost as good as that from the

use of oleic acid with 90 lbs. of sulphurie acid, further, that Turpen-

tine in cold circuit (12°C) was almost useless, which may bave been

due to the oxidation in drying the sample before it was sent to you.

I am, dear Sirs,

Yours faithfully,

A. HOWARD HIGGINS.

6. enclos.

990 COMPLAINANTS’ EXHIBIT.

Ilyde Letter, February 7th, 1911.

No. 1 London Wall Buildings.

London, E. C., 7th February. 1911.

Mr. A. C. Howard, City.

Dear Sir: Since requesting vou to prepare a note for me on the

subject of making working tests with the frothing equipment, I

have decided not to continue with Minerals Separation, and shall not

need the information asked for.

I hope vou have not been to any trouble in preparing it. i

I shall remain in London in consultation work with several com-

panies for two or three months.

Thanking you for the courtesies shown me, I remain,

Sincerely yours,

Tome d A nition

JAMES M. HYDE. |

BUTTE & SUPR, MNG. CO. VS. MIN. SEP., LTD., ET AL, 589

COMPLAINANTS’ EXHIBIT.

Froment Description.

Description et instructions

pour la concentration

des minerais.

A. DESCRIPTION

Le materiel se compose :

1° d’un malaxeur centrifuge

2° d’une cuve a serpentin

3° d’un crible d’épuration hydraulique avec extracteurs

(si cela est necessarie )

4° d’une caisse 2 filtre

— ——— LIPO GR PIOREILED LI IG NR HR AL EUE, pals RISE Ty TORN SLT RE NSO ge Oe RE RE

590 BUTTE & SUPR, MNG. CO. VS. MIN. SEP., LTD., ET AL.

og)

Complainants’ Exhibit—Froment Description.

La légende qui accompagne le déssin donne déjd une

idée assez compléte du matériel, il en est de méme du

matériel d’essai.

Néammoins, nous donneront quelques reinseguements

supplémentaires.

A. Le malaxeur centrifuge se compose d'un corps cylin-

drique en tole forte rivée avec boulons, et dans laquelle

deux agitateurs marchent en sens inverse a raison de 300

tours environ par minute.

Le minerai est versé on arrivé par la petite ange située

sur le coté, et Vhuile est ajoutée par un petit tube situé

a coté.

(Observations). Le malaxeur d'éssai peut traiter

environ 2 Kil. 4% de minerai par charge. On doit faire

tourner les agitateurs au fur et & mesure que |’ on verse

le minerai avee Veau et le caleaire,

Pour 2 Kil. 14 de minerai il faut environ 6 litres d'eau.

Tourncr pendant quelques minutes, pius évacuer le

minerai en tournant toujours.

Ib. La cuve a serpentin peut étre construite en bois.

I} ep faut deux par malaxeur pour alterner les “charges.

Penda.t que Vl une est en travail, autre se remplit.

Chaque cuve doit contenir environ de 200 4 400 Kilos de

minerai. Cela est alfaire de pratique. La hauteur est

d’ environ Om, 50 sur un diamétre de 1 m. 70 suivant la

densité du minerai a traiter.

Un serpentin en plomb oceupe le fond dé la*cuve. Ce

Berpentin cst troné, les trous sont en dessons pour éviter

quils ne se bouchent pas. Le tube remontant du serpentin

se divise en deux branches, l'une destinée a recevoir la

portion @acide sulfuriqne nécessaire; Vautre, pouvant, si

cela est nécessaire, etre reliée a un générateur de vapeur.

La vapeur, sous faible pression, arrive par les trous du

serpentin et active les réactions.

Cela ert seulement nécessaire dans Jes pays froids..

Dans le cas od cette branche ne sert pas d la venue de la

vapeur, elle peut, avec avantage, remplacer le tube a eau

=

BUTTE & SUPR, MNG. CO. VS. MIN... EP., LTD., ET AL. 591

Complainants’ Exhibit—Froment Description.

dont il va étre parle. (Dans le matériel d’essai cette

chandiére a été laissée.

Un tube a eau sans pression, mais avec robinet, doit

venie déboucher, 4 0m, 45 du fond, de facon a permettre

evacuation des sulfures qui montent a la surface. Ce tube

est inutile si I’ on vent écumer ces sulfures od les pousser

vers |’ auge d’ évacuation. I] peut étre remplacé par une

des deux branches du serpentin.

Un rateau horizontal tourne lentement dans la cuve, il

set um par un arbre vertical et une poulie; il doit faire 10

a 12 tours par minute.

C. Le crible d’epuration: est constitué par un cadre en

bois dur, sous lequel est fixée une plaque d’aluminium

percée de trous de % millimétre. Ce cadre est soutenu

| par des montants en bois auxquels il est fixé par des

attaches kX ecrou de facgon A obtenir l’inclinaison nécessaire.

Les montants sont fixés a une cuve en bois dont la

longueur est d’environ 2 M. 50, la largeur 0 m. 75. Le

crible proprement dit en occupe presque toute la surface.

Le mouvement est donné par un éxcentrique mais

il est nécessaire d’observer que les secousses doivent étre

nombreuses avee peu d'amplitude, autrement le crible

fonctionnera mal.

La caisse est percée de 3 trous pour Vévacuation des

! résidus et ces trous correspondent A 3 divisions de la caisse.

, Un tube supérieur de décharge déverse les partics légéres

dans la caisse 2 filtre.

Le déssin montre 3 extracteurs-pointus pour une extra

tion continue. Mais, dans ce cas, il faut beaucoup d’ ean.

Un tube a eau, sans pression, mais avee robinet, entre

vers le milieu de la caisse du crible amenant doucement

Veau necessaire pour tenir toujours le crible sous Veau.

D. La ecaisse A filtre est faite en bois, elle a les dimen-

sions que l'on vent bien lui donner; il n’y a pas, A cet

égard, des mésures précises. Elle est garnies de filtres

doubles en toile avee poussier de charbon Au travers de

ces filtres eau-s‘écoule et les sulfures sout retenus.

_— “Ga sng SEINE

SAN RAPE RIN ORE LST AN! SL aR On

Mel DS A ian ia ane G MRE AN OWN NR ER MONIT: MnO” Dyin + mH

592 BUTTE & SUPR, MNG. CO. VS. MIN. SEP., LTD,, ET AL.

993

Complainants’ Exhibit—Froment Description.

B. INSTRUCTIONS.

L’expériepce a prouvé que pour arriver & la parfaite

désintégration .des particules constituantes du minerai

sans pour cela faire de l'impalpable, le broyage doit -se

faire en dens fois Le premiére fois, le minerai broyé doit

passer & travert d'un tamis No. 15, soit dans un moulin &

boules, soit dans un moulin Griffin on autre. La seconde |

fois il doit passer dans un tamis 120 environ et le broyage

sera fait par un moulin Huttington, boccard, ete.

La production est beaucoup plus grande par voie séche

que par voie humide, mais il ya a plus d’impalpables. A

sa sortie du second moulin, le minerai sera donc soumis

& 2 on 3 spitzkasten pour éliminer la portion de schlammes

trop fins pour étre traités et qu’ aucune méthode n'a pu

traiter jusqu’ ici. Dans l'état de grosseur ov il dait se

trouver, le minerai arrive avec un peu d'eau dans le

malaxeur centrifuge toujours en mouvement Lorsque l'on

juge que la quantité de minerai est suffisante (environ

2 & 300 kilos) pour constituer une charge, on ajoute 1%

environ de carbonate de chaux, 2% au maximum dans les

cas difficiles, et environ 1 & 114% de buile minérale &

machine. On laisse le malaxeur agir pendant 10 minutes

environ, l’essentiel est que tous les grains de sulfures soient

bien touchés par 1 huile.

(Observation) Si la teneur du minerai dépasse 5% de

matiéres métalliqus, cuivre, plomb, il fandra ajouter un

peu plus d' huile En thése générale on peut compter;

1% huile pour jusqu’ & 5% de métaux

144% “ ‘“ 10% “ J

2% ‘“ “ 15% “

I] est rare que !’on ait A enrichir des minerais contenant

plus de 15% de cuivre. Dans nos contrées. Italie, France,

Espagne, un minerai 4 15% de métal cuivre est considéré

comme riche et traité fel quel. Pour les minerais de

plomb, in enrichit jusqu’ A 60% de plomb, il est rare que

Von aille au Dela.

ai a NC aN Na a aan

BUTTE & SUPR, MNG, CO, VS. MIN. SEP., LTD., ET AL. 593

nM

Complainants’ Exhibit—Froment Description.

En conséquence, pour un minerai plombeux d’une teneur

de 20% il faudra 2% buile

2° Pour une teneur de 30%...... 214% huile

3° “ “ 40%...... 3% 8=

4° “ e 50%...... 344% “ ete.

I] est logique de penser que le carbonate de chaux suit a

peu prés une méme proportion puisqu’ il faudra davantage

de gaz pour un minerai riche que pour un minerai pauvre.

la dépense est done proportionnelle a la richesse du

minerai et par cons¢quent proportionnelle a la teneur du

concentré obtenu. Le procédé en question trouve mieux

son application dans le traitement des minerais pauvres

que dans ceux des minerais riches. I1 serait parfait, par

éxemple, pour reprendre et traiter les stériles et les %

mixtes, résidus des laveries ordinaires, surtout lorsque ces

laveries ont en a traiter des minerais difficiles. Quoiqu’ il

en soit, aprés le malaxage centrifuge, le minerai est

déversé, le malaxeur étant toujours en mouvement dans la

cuve A serpentin.

Pendant que le malaxaur s’éxonére de sa eo de

minerais dans la cuve, l’agitateur dont celle-ci est munie

est mis en mouvement A raison de 10 A 12 tours par minute,

de facon A ce que le minerai ne puisse se rassembler au

fond en masse trop compacte.

L’acide sulfurique est versé par le tube de plomb qui sert

A cet éffet. Il est bon de diluer cet acide & 30° Baumé,

par éxample. La cuve doit etre remplie d’eau jusqu’ A la

hauteur du déversoir. Le tube de plomb qui sert A l’intro-

duction de l’acide dans la cuve est A 2 branches, dont l'une,

munie d'un robinet, peut 4 volonté laisser venir, ainsi que

nous ’avons deja dit, de la vapeur on de l’eau. La quan-

tité d’ acide varie avec la quantité de carbonate de chaux,

elle est proportionelle a cette derniére, c’est A dire qu'il

faudra environ 1% d’ acide A 66° Baumé pour 1% de car-

bonate de chaux lequel est, on |’ a vu, proportionnel comme

Vhuile & la quantité de sulfures. Tout aussitdt que lhcide

est parvenu dans le recipient et qu’ il a commence A se

38—Rec.

a CRETE ORI RIEU CONN amt NS nimNRCRINES , . ceysuenenengmetian

594 BUTTE & SUPR, MNG, CO, VS. MIN. SEP., LTD., ET AL.

Complainants’ Exhibit—I'roment Description.

méler avec le minerai, la réaction commence de suite et la

plus grande partie des sulfures gras monte A la surface

entrainée par les bulles de gaz. Ils sont écumés ou

poussés dans la petite auge qui sert de deversoir au ré

cipient.

Une petite partie retombe et se méle & la gangue, mais,

des |’ instant que les particules sulfureuses de cette partie

ont été bien touchéés par |’ buile, elles se separéront

facilement dans le crible d’ epuration auxquelles elles

seront tant6t soumises.

Lorsque la réaction est terminée, c’est & dire lorsque il

ne monte plus de bulles de gaz accompagnéés de sulfures

au dessus du liquide, le residu composé de la gangue et

d’une faiblepartie de sulfures qui y sont restées, est amené

peu & peu sur le crible d’épuration.

Ce crible doit travailler par petites secousses, environ,

200 par minutes, secousses séches et sans amplitude

L’ éxcentrique du crible d’éaski donne difficilement de ces

secousses trés répetées et cela se comprend. I) faut pro-

ceder par tatonnements.

Dans la partie industrielle le mouvement de ce crible

sera donné par un appareil trés simple, dunt croquis A sur

feuille séparée.

Par suite des secousses, la matiére se répand uniformé-

ment en une couche mince sur le crible; les parties sul-

furées grasses montent au dessus, gagnant ainsi l’extremité

du crible, tandis que la gangue passe au travers la portion

lourde en téte.

L’eau qui s’écoule par le déversoir du crible passe dane

une caisse A filtre retenant les parties sulfurenses qui

pourraient surnager.

Dans les appareils d’éssai, cette caisse A filtre n’éxiste

pas. I) est facile de recevoir l’eau d’écoulement dans un

vase queléonque percée d'une ouverture basse munie d’ un

filtre.

a été bieu conduite, i] ne doit plus rester

BUTTE & SUPR, MNG, CO, V8. MIN, SEP., LTD., ET AL. 595

M5

Complainants’ Exhibit—Transiation of Froment Descrip-

tion and Descriptive Matter on Froment Drawings.

de parties sulfureuses dans la gangue, sauf de la. pyrite

de fer.

Les concentrés peuvent é@tre soumis A la presse

hydraulique on au filtre-presse et par cette opération, I’on

peut récupérer une trés grande partie de | ’huile.

* COMPLAINANTS’ EXHIBIT.

Translation of Froment Description and Descriptive Matter on

Froment Drawings.

29th December, 1903,

Deseription and Instructions for the Concentration of Ores.

A. Deseription.

The machinery comprises:

lL. A centrifugal mixing device.

2. A vat with coil.

3. A hydraulic purification screen, with extractors (if necessary 5,

4. A filter case.

The explanatory writing on the drawing already gives a fairly

complete idea of the machinery, the same applies to the experimental

machinery.

Nevertheless, we will give a few supplementary explanations.

A. The centrifugal mixing device is composed of a eylindrical

holy, made of string sheet iron rivetted with bolts, in which two

stirring devices work in opposite directions, making about 300 revo-

lutions per minute,

The ore is charged, or arrives, through a small hopper or

997 shoot arranged at the side, and oil is added through a small

pipe arranged at the side.

(Remarks.) The experimental mixing device is capable of treat-

ing about 24% kilograms of ore per charge. The stirring devices

must be made to rotate as ore with water and limestone are intro-

duced.

For 2% kilograms of ore it is necessary jo have about 6 litres of

water. Set the ore to rotate in the apparatus for a few minutes then

discharge the ore without stopping the apparatus:

B. The vat with coil can be made of wood. Two such vats are

required for each mixing device, in order to alternate the charges,

While one is working, the other is being filled. Each vat must con-

tain about 200 to 400 kilograms of ore. This is a matter of prac-

tice, The depth is about 0.50 metre and the diameter 1.70 metee,

596 HUTTE 4 SUPR, MNG, CO, V8. MIN, #EP., LTD, ET AL.

according to the density of the ore to be treated, A lead coil oe.

cupies the bottom: of the vat. The coil in question ix perforated,

the holes are underneath, to avoid their getting clogged. The tube

rising from the eoil, ie divided into two branches, one intended to

receive the Hecewary quantity of sulphuric acid, and the other, if

considered neceswry, can be conmctel to a steam generator, Steam

at low prowure arrives through the holes of the coil and assists the

reactions, This is only necesury in cold countries, In case the

branch in qtestion i¢ not used for supplying team, it can advan:

tageously replace the water pipe hereinafter described, (This boiler

wae left in the experimental machinery.)

Os A pipe containing water without pressure, ‘a ided with a

valve, must merge about O45 metre from the bottom, so a« to

chable the «alphides rising to the surface to be discharged, Thi«

pipe is unnecessary if it ix desired to skim these sulphides or to puch

them towards the discharge hopper, It can be replaced by one of

the twe branches of the coil,

A horizontal rake turns slowly in the vat, it ix operated by a

vertical spindle and pulley; it must make 10 to 12 revolutions per

minute,

C. The purifying screen is constituted by a frame made of hard

wood, under which i« fixed an aluminum plate provided with hole

of 14 millimetre, The frame in question is supported by wooden

uprights to which it ix secured by brackets with nuts, «0 a* to obtain

the necessary inclination.

The uprights are secured to a wooden vat, the length of which ix

about 2.00 metres, the width 0.75 metres, The sercen proper oe-

cupies nearly the whole of its eurface,

he movement of the screen is effected by means of an eccentric,

but it must be pointed out that the shocks must be numerous and of

small smptioale, otherwiee the screen will not work well,

The case i« provided with three holes for the discharge of the

residues, and these holes correspond to the three compartments of

the case, An upper discharge tube discharges the light suletances

into the filter ease,

999 The drawing shows three pointed extractors for continuous

extraction, But in that ease, a great deal of water is re-

quired, A water pipe, without presure, provided with a valve,

merges into the ease about its center and slowly supplies the water

equines to keep the screen submerged the whole time.

. The filter case is made of wood, it may be made of any desired

dimensions —no definite measurements need be complied with in that

respect. It is provided with double filters of canvas with charcoal

powder in between, Witer can pass through these filters, while the

sulphides are kept back,

B. Instructions,

Practical experience has shown that, in order to arrive at a perfeet

disintegration of the constituent particles of an ore, without render-

ing it impalpable, it is necesary to do the crushing in two operations,

BUTTE 4 SUPR, MNO. CO. V8. MIN, SEP., LTD., ET AL. 507

The firet time the crushed ore must pax through a sieve No. 15,

either in a ball crusher mill or in a Griffin Mill or any other, The

scoond time, it must pax through a sieve of about 120 and the erud-

ing would be Mfected ina Hentington Mill, stamp mill, ete.

The output i« much greater by dry proces than by wet process,

but there ix a greater proportion of in walpable particles, On leaving

the second crushing roill, the ore will therefore be submitted to two

or three “Spitzkasten” for eliminating the «lime which ix too fine to

be treated and whieh could net be treated by any hitherto

1000 knewn methad, Reduced to the size which it ought to have,

the ore arrives with a littl water inte the centrifugal mixing

apparatus which ix always working. When it ix thought the quan-

tity of the ore ix sufficient (about 200 to 300 kilograms) to constitute

a Charge, about 1) of carbonate of lime, maximum 24, in difficult

coms, and about 1) to L'2 of mineral engine oil are added. The

mixing apparatus ix left to work for about 10 minutes, the chief

point ix that all the sulphide grains should come inte thorough

contact with the oil,

(Remark.)—1f the ore contains more than five per cent. of me-

tallie matter such ax copper, lead, it will be necesary to add a little

more oil, Asa general rule, one may aume ;

1) of oil for ore containing up te 5) of metals,

1 1% “ “ “ “ li, “

2% “ “ “ “ We, “

It is very rare that one hax to enrich ore containing more than

15%) copper. In our countries, Italy, France, —. ore containing

15%) of metallic copper, ix considered very rich and ix treated ax

such, In case of lead ore, concentration ix continued until the ore

contains 60, of lead, thie later proportion ix seldom exceeded,

Consequently for a lead ore containing 20°, of metallic nutter,

it will be neces ary to use 26 of oil,

2. For ore containing 30°, of metallic lewd 2'6°, of oil.

i. “ “ 405, “ wy “

4. “ “ win, SL

| It seom= reaxonable to asume that the proportion of the

carbonate of lime follows practically the sume rule, for a

richer ore will require more gas than a poorer one.

The expenditure is, therefore, in proportion to the richness of the

ore, and, consequently, in: proportion to the metallic matter con-

tained in the concentrated ore obtained. The process in’ question

is more suitable for the treatment of poor ore, than for that of rich

ore, It would be perfect, for instance, for taking up and treating

sterile ore and 'y mixed ore, residues obtained from the ordinary

washing apparatus more particularly when the washing apparatus in

question had to treat difficult ore, However this may be, after the

centrifugal mixing, the ore is discharged into the vat with coil, the

mixing device being always in motion in the vat with coil,

Whilst the mixing device is being emptied of its charges of ore

598 DPUTTE 4 SUPR. MNG. CO. VS. MIN. SEP., LTD., ET AL.

into the vat, the stirring device, with which the latter is provided, is

started at the rate of 10 to 12 revolutions per minute, so as to pre-

vent the ore from collecting at the bottom in too compact a mass,

Sulphuric acid is introduced through the lead pipe which serves for

this purpose, It ix advisable to use for the purpose sulphuric acid

diluted to say 30° Baume. The vat must be filled with water up to

the level of the overflow, The lead pipe which is used for introduc-

ing the acid into the vat, has two branches, one of which, provided

with a valve, can be used to admit, whenever it may be

1002 necessary, steam or water, as already state*. The quantity of

the acid varies with the quantity of the carbonate of lime, it

is in proportion to the latter that ix to say, it will be necessary to use

about 1 of acid at 66° Baume for 1G of carbonate of lime, which,

as already stated, is, like the oil, in proportion to the quantity of the

sulphides, As soon ax the acid has reached the vewel and begun to

mix with the ore, the reaction will at once begin, and the greatest

part of the greased sulphides will rise to the surface, carried by the

gas bubbles, They are skimmed or pushed into a small hopper

which forms an overflow for the vat.

A small proportion fallx back and gets mixed with the gangue,

but the moment the sulphurous particles of that part come into

thorough contact with the oil, it will be easy to separate them in the

purifying screen in which they would be subsequently treated.

When the reaction has been completed, that is to say when no

more gas bubbles, accompanied by sulphides rise to the surface of

the liquid, the residue consisting of the gangue and of a small pro-

portion of sulphides that have remained in it, is gradually brought

to the purifying sereen,

This sereen must work by small shocks, about 200 per minute,

these shocks must be “dry,” that is to say sudden, and without am-

litude. It has been found difficult to produce such repeated shocks

”y means of the cecentric of the experimental sereen, which can

be easily explained. It ix necessary to proceed by groping.

10038 When using it on a large scale, the screen will be caused

to shake by a very simple apparatus, a sketch A, of which is

given on a separate sheet, Owing to the shocks, the material spreads

uniformly on the screen in a thin layer. The greased sulphurous

parts rise upwards, thus arriviag at the extremity of the screen,

while the gangue passes through the heavy portion at the head.

Water escaping through the overflow of the sereen, passes into a

filter-case retaining any sulphurous particles that might come to the

surface. In the experimental apparatus, this filter case does not

exist. It is easy to collect the escaping water into any vessel pro-

vided with a hole at a low level, provided with a filter. If the opera-

tion has been properly carried out, no sulphurous parts should re-

main in the gangue, except iron pyrites.

The concentrated ore may be subjected to treatment by a hydraulic

press or filter press, and by that operation a very large proportion of

the oil used can be recovered,

BUTTE & SUPR, MNG, CO, V8. MIN, SEP., LTD., ET AL. 599

Sketch A.

1. lron Vibrator.

2. Spindle.

3. Spring.

4. Kecentric.

5. lvon bracket to be fixed 40 the vat.

1004 6. Counter-shock mounted on the vat,

7. Partitions,

8. Overtlow.

%. Flexible iron stop.

10, Sereen,

Large Drawing.

A. Centrifugal Mixing Device.

1. Pulley.

2. Driving shaft, 60 revs, minute.

3. Large gear.

4. 4’. Gears driving the stirrers 300 revs min.

5. Hopper for charging in ore coming from the crusher,

6. Safety (overflow) pipe discharging into any vessel,

7’. Vessels receiving the ore after the centrifugal mixing.

8’ S§*. Tron frame supporting the mixer.

. &. Water pipes with valves for expelling the ore from the ves-

sels, 7 and 7’ a introducing it into the coil vat.

a hd

B. Coil Vat.

1. Vat proper made of wood,

2. Table supporting the vat.

3. Overtlow discharging sulphides into the filter case,

4. Pulley and shaft driving the rake in the interior,

1005 5, Discharge tube for the residue.

6. Drain pipe for the coil.

7. 7. Two-branch tube of the coil.

C. Purifying Sereen,

1, Sereen case,

2. Water pipe with valve used, when necessary, for maintaining

the case always full of water .

3. Pulley and shaft driving the sereen,

4. 4° 4°. Supports of the sereen.

5. Aluminum sereen, wood mounted,

6. 6 6.” Discharge pipes for the residue.

7. Discharge pipe for the light sulphides falling into the filter case.

8. 8.° 8." Residue in extractor, for the case that it is desired to

classify it.

— —_——

600 BUTTE & SUPR. MNG. CO. VS. MIN. SEP., LTD., ET AL.

D. Filter Case.

1. The case proper.

2.2 2.% 2" Canvas filters consisting of a wooden frame with

canvas stretched on both sides.

Between the two canvasses is contained charcoal powder.

4. Emergency discharge pipe.

1006 CoMPLAINANTS’ EXHIBIT.

Fryer Hill Publication.

(The Daily Herald Democrat, Leadville, October 30, 1889.)

An Important Invention.

Experiments with the Oil Rotary Concentrator.

One of the Most Novel Methods of Treating Dry Silicious Ores Ever

Brought to Notice—An Exhaustive Review of the New Process—lIts

Advantages Particularly Applied to the Miners of Fryer Hill—

News from the Mines—Shipments from the New Quartzite Strike—

Mikado’s New Developments.

Experiments are now being made in Denver with a new appliance

for the concentration of dry silicious ores, such as those of the Dun-

kin, Matchless, Little Silver, and, in fact, all the mines of Frver Hill.

So far, the experiments have proved a perfect success, the tailings

from the concentrator, if so it may be called—only run-

ning one ounce to silver from a crude ore that ran over

ten ounces of silver per ton. The first unimportant means

of testing the new system having proven so incontestably

the correctness of the theory, other larger and more

capable means have been employed. The whole system of concen-

tration appears to be based on the well known affinity of the lighter

forms of sulphuret and chloride of silver for oils. Petroleum is the

oil now being used by the parties having these experiments in charge,

and appears from its density, to possess the requisite ad-

1007 hesiveness to effect the result desired. The ore is first crushed

and rolled to such a degree of fineness as to enable it to pass

through a 40 mesh screen, and while dry, is thoroughly mixed with

the oil, after which it is placed in a circular tank or receiver, through

the center of which runs a rotating hollow tube, to the bottom of

which tube is attached, on two opposite sides, a couple of fans, the

lower edges of which are unevenly cut in order to send—in the revo-

lution—the lighter particles of the ore and oil mixture to the outer

sides of the drum or cylinder. This rotating hollow tube is per-

forated at, or near, the bottom, and, when the receiver is thoroughly

charged, acidulated (sulphuric acid is used). Steam is introduced

through the tube and is forced to the bottom of the mixture, while

a

a

BUTTE & SUPR. MNG. CO. VS. MIN. SEP., LTD., ET AL. 601

the arasta-like fans, attached to the bottom of the tube, keep the

whole mixtur® in motion, and the action of the revolving tube, the

fans, and injected acidulated steam causes the lighter portions of the

mineral-charged oil to float to a point just above the center of the

receiver, where there are suspended two semi-circular doors, which,

when the oil has passed above them, laden with its precious freight,

are raised, and the superfluous water allowed to drain through slight

perforations in the bottoms of these semi-cireular doors, after which

the mineral laden oil is carefully removed to settling barrels revoly-

ing with jets of steam injected continuously from the lower ends.

These settling barrels being placed at an angle, permit the

1008 mineral laden oil to pass through openings in the ends, which

are connected with shallow settling tubs or tanks from which

the concentrated ore is shipped directly to the smelters, who will

hardly be likely to refuse so pleasant an addition to their heating

powers. As said above, with the present plant, which is daily being

improved upon, a good, high grade concentrate is being made on

ores on which no previous methods of saving the silver value has

preven entirely satisfactory, and the few mining men of Fryer Hill

to whom this scheme has been whispered are watching the experi-

ment with a preat deal of interest, as there are thousands of tons of

such ore now awaiting treatment.

1009 CoMPpLAINANTS’ Exnipir.

Criley & Everson Publication.

Nov. 15, 1890—9581.

The Engineering and Mining Journal.

Oregon, Baker County.

Baker City, Noy. 10.

Quite a number of capitalists from Portland and Walla Walla are

here watching the result of some test working of the “Criley & Ever-

son Oil Process” for the extraction of sulphurets from any ore as the

name signifies by the use of oil. Your correspondent witnessed a test

made on the Eureka and Excelsior ore, which was conducted as fol-

lows: The ore was crushed and passed through a 50 mesh sieve,

weighed and thoroughly mixed with black thick oil. To water

heated to near boiling wag added enough sulphuric acid to give it a

tartish taste. This acidulated water was then mixed with the mass of

oil and ore. A thick seum of sulphurets rose to the surface and was

skimmed off, leaving the hitherto black ore as white as snow—in fact,

pure silica. The gentlemen expressed themselves as pleased and the

citizens of Baker County are in hopes they are, because it means the

erection of a large plant at this point.

BUTTE & SUPR. MNG. CO. VS. MIN. SEP., LTD., ET AL.

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604 BUTTE & SUPR. MNG. CO. VS. MIN. SEP., LTD., ET AL,

1012 COMPLAINANTS EXHIBIT.

Statement of Expenditures in Agitation-Froth Process.

Statement of Expenditure Incurred by Minerals Separation, Ld.. in

Introducing the Agitation-Froth Process to 81 Dee., 1911.

Plant and Laboratory Apparatus................. £9,317- 1- 2

Experimental & General Expenditure:

Management, Traveling Staff, Examination of Prop-

erties at home and abroad..................... 62,115-16- 5

London Administration :

Office Salaries & Rent............... £5, 569-17-11

es Ck ued big ke a Mae ee 1,027- 7-

I io ce hig 5 cn kw a YR 177-19- 6

Peer reerre rrr 8A28- 6-5

Pesnmes und Cables... 2... 6c sc eciese 2,193-13- 9

RR RAO ras eels emul yie wy 320-11- 9

I oo yas 7,378-14- 8

—_———— 20,096-11-

£91,529- 8- 7

nm. C.H.

4/8/12.

Nore.—The expenditure incurred in Purchases of Patents, Patent

Fees & Expenses & Patent Litigation and amounting in all to £56,-

481-0-10 is not included in the above statement.

1013 CoMPLAINANTS’ EXHIBIT.

Statement of Expenditures by American Syndicate in Agifation-

Froth Process.

Statement of Expenditure by Minerals Separation American Syndi-

eate, Ld., in the Introduction of the Agitation-Froth Process to

31 July, 1912.

(1) Into United States of America.. £12,360-15-5

‘ie 3 | ee ernare . 1,401-16-8

Ce See I oy eae 1,433-— 9-7

£15,196-1-8

H. C. H.

2/9/12.

BUTTE & SUPR. MNG. CO. VS. MIN. SEP., LTD., ET AL.

605

The above statement does not include any litigation expenses, or

any of the Costs in the present suit.

1014 CoMPLAINANTS’ EXHIBIT.

Slatement of Tonnage Treated by Agitation-Froth Process at Broken

Hill, Australia.

Tonnage of Tailing & Slimes Treated by Minerals Separation Agi-

tation-Froth Process at Broken Hill, Australia, With Concentrates

Produced as per Official Returns Made by Licensees.

Tailings &

Zine, lead,

silver con-

slimes centrates—

tons. tons.

Sulphide Corporation, Ld. ............. 1,176,934 445,299

Part vear ending 30” June, 1906,

30) June, 1912.

Minerals Separation, Ld. .............. 636,799 216,181

Jointly with Lazard Bros. & Co, & Sulphide

Corporation, Ld.

November, 1907, to

June, 1911.

Zine Comporetion Ld. . 2.0 6c cisccceses 380,020 132,675

Nov., 1910, to

30 June, 1912.

Broken Hill Junction North ........... 44,261 10,449

Nov., 1911, to

12 March, 1912.

2,238,014 804,604

A ae ee No Returns of tonnage

April, 1907, to

Oct., 1910. £1500

equivalent to 12,000

tons of Concentrates.

By. ©. B.

4/9/12.

made but they paid

Royalties

as AESOP EEO NIE A HE ites NS MT RE EOE ATEN SHOR SSE

606 BUTTE & CUPR. MNG. CO. VS. MIN. SEP., LTD., ET AL.

1015 CoMPLAINANTS’ EXHIBIT.

Statement of Profits and Royalties on Agitation-Froth Process.

Minerals Separation Ld. Proportion of Profits from Joint Ventures

and Royalties Received from Licensees.

Original Joint Venture:

I IE ok Bice n kn deen aes £130,341-— 8-10

Minerals Separation Ld. propor-

3, Se rr are £65,170-14- 5

Triple Venture:

i, eee 51,024-11-11

Minerals Separation Id. propor-

kis bed Yad ease 4 a8 12,756- 2-11

South Blocks Venture:

NEN ae ons eS ae 321- 5

Minerals Separation Ld. propor-

Ne a ee re awe i 160-12- 6

i I os en ec ce aedes. £78,087— 9-10

Royalties received from Licensees

as far as accounted for and re-

ceived in London to 30 June,

ESS SM Diy SS £75,166-— 0- 6

Royalties due but not yet paid or

received in London at 30 June,

SE A I ste ood sv ewa wewweaee £153,253-10- 4

1016 COMPLAINANTS’ EXHIBIT.

Table of Sulphide Corporation Operations With Agitation-Froth

Process.

I ae ie hw tain 1,176,934 tons

ewe ee cases evita ene ee 445,299 tons

I Be lS aay sa co gia a se wiv Gk Biwi we oink £1,154,353

Per ton Feed

Shillings

19.6/-

Less Total Cost of treatment.................55:; £504,200

8.5/—

ES A ck a ee ae al wi £650,153

BUTTE & SUPR, MNG. CO, VS. MIN, SEP., LTD., ET AL. 607

COMPLAINANTS’ EXHIBIT.

Sulman & Picard Report, March 25, 1903.

Sylman & Picard.

44. London Wall, FE. C.

25th March, 19038.

John Ballot, Esq., Salisbury House, Ie. C,

Drak Str: As you are aware we have carried out numerous experi-

ments on the Cattermole process during the past 2 months, the work

done being mainly of a preliminary experimental character with a

view towards getting a knowledge of some of the chief factors in-

volved,

Whilst we were feeling our way much of the work done

1017) was not of a quantitative nature and therefore no detailed

records were necessary. Of late however work done has been

strictly quantitative and a schedule of results is appended hereto. It

will be perhaps the most convenient way if we here state the general

results arrived at from the whole series of qualitative and quantitative

tests without considering each test separately, Firstly, we have en-

deavored to reduce agitation, i. e. floceulating, breaking down, and

rolling or agglomerating actions, to a mechanical standpoint and

therefore have used the Gabbett cone and a mechanically rotated

cylinder for all the later agitations required,

We early got away from the alkaline soap method of breaking

down the first product resulting from the treatment of an ore with

soup and oil emulsion by means of which the whole of the ore is

precipitated from the milling waters as one uniform floeculent pre-

cipitate. This floeculating operation remains much the same as

:chemed by Cattermole originally. The next portion of his inven-

tion was to “break down” the floceulent precipitate into clean gangue

and fine particles of oiled mineral by more or less violently agitating

the floceulent precipitate with weak soap and alkali. By rolling or

ageglomerating the product so obtained the oily particles of mineral

are made to cohere into gradually increasing shot-like granules, when

they become sufficiently dense to be separable from the coarse clean

sands or gangue by the action of an upward current of water.

1018 The combined minerals in the form of clean granules may

then undergo further separation into their constituent min-

erals by the application of solutions of increasing strength in alkali.

Our work up to the present has been confined entirely to Broken

Hill sulphide ores, This is a type of mineral which gives the greatest

difficulty in the separation of gangue from mineral; the gangue is

execedingly heavy consisting as it mainly does of garnet and rhodo-

nite—its specific gravity being nearly twice that of quartz, and vary-

ing from 4.3 to 4.7; and thus very nearly approaching in density

that of the blende contained in the mineral. There being no diffi-

608 BUTTE & SUPR. MNG. CO, VS. MIN, SEP., LTD., ET AL.

culty in the separation of blende from galena when once the separa-

tion of the two from the gangue has been effected, we have confined

our investigation so far entirely to separating the gangue from the

combined mineral,

So far the process decribed is covered by the provisional specifica-

tion which Cattermole has already filed, but it was found difficult

to separate such heavy gangue as exists in the Broken Hill ore from

mincral by the alkaline soap “breaking down” method. It was found

however that the treatment of the first flocculent precipitate by very

dilute acid gives an ea y and complete result and therefore the acid

breaking down process has been exclusively used by us in all our

late work, This is a most important development of the Cattermole

process and will have to be protected by further specifications. Most

of the earlier experiments, in fact all but the last one given in

1019 the schedule of results (No. 6) were made upon Broken Hill

ore ground to varying meches from 90 mesh to 120 upon a

Bucking table. The results on these were very satisfactory allowing

for the imperfect form of upeast apparatus used for separating the

mineral granules in the last operation, The last experiment however

was made upon ore ground by Messrs, Johnson & Sons of Finsbury,

5 ewt. of Broken Hill being ground, 3 ewt. to 60 mesh and 2 ewt. to

120 meh. Mr. Cattermole and ourselves found much greater trouble

in treating this material than in dealing with laboratory crushed

ore. The 120 mesh material was found to be nearly all fine slimes,

containing a very large proportion of free zine blende in a state Of

high division, whilst the 60 mesh stuff was far more granular and

contained very little slimes and much coarse sands. After many

experiments however the difficulty in dealing with these products

has been largely overcome and the last experiment on the schedule

shows the result on 800 grammes of 60 mesh ore conducted in 3

separate lots.

Kercsene emulsion of 75% strength was used in the earliest experi-

ments, and though this oil works well, and in the rolling operation

(after breaking down) yields hard, shot-like granules, it has the

disadvantage of not taking up all the blende, leaving the sands and

slimes somewhat dirty with unrecovered zine sulphide. It has been

found that the substitution of thick residuum oil for the larger

portion of kerosene used in the emulsion gives quite clean

1020 sands and retains every portion of the blende; but thick oil

seems to leave the granules somewhat more readily affected

by air, giving rise to floating granules whenever a pulp in which

they are contained is exposed to the air. Pure kerosene granules

also do this to some extent and we are not vet sure whether this may

not be due to the acid breakdown as compared with the original

alkaline method; if so, it is a difficulty which has to be overcome,

as there can be no doubt that the acid breakdown is five or six times

as cheap as the original alkaline soap method. The obvious remedy

is to keep the granules and sands after the rolling or agglomerating

stage carefully covered by water during their transference into and

below the surface of the water in the upcast separating apparatus,

for which purpose an open launder should not be used; but possibly

ia i SRSA eH NE Ca APN RE OS ee aE

BUTTE & SUPR, MNG. CO, VS. MIN. SEP., LTD., ET AL. 609

some form of submerged archimedean screw feed might be used on

a large scale.

Facts which have been established so far are broadly as follows:

Sharp ore alone does not give such good results as a mixture of sharp

ore With slimes, as the fine mineral particles in the latter exercise a

potent effect in building up the hard, shot-like granules desired, by

supplying “filling material,” without which the large oiled mineral

particles could not become sufliciently coherent or dense. Again

slimes containing mainly, or only, blendes, are not so suitable as

those which contain their due proportion of fine galena, also, as

blende is the mineral most difficult to take up by oil, and the

1021 first to be rejected in subsequent separations. It does, there-

fore, not form such good filling or cementing material for

granules as does galena; but with a fair proportion of the latter

(“fines”) there is no difficulty in getting the blende to do its proper

share of cementing work in forming the granules. These factors

are those which mainly have to be considered in the original grinding

of the raw ore. It becomes therefore obvious that when the mineral

is ground to 60 or 70 mesh that all slimes produced should be kept

strictly associated with the coarser particles and that the slimes so

produced should not consist exclusively of the more readily slimed

blende, but a fair proportion of galena slimes should also be present.

Given these conditions, the operation of the Cattermole process has

become much simplified compared with the scheme originally put

forward, It is sufficient to take the ore suspended in about three to

four times its weight of water and to mix this to a uniform pulp in

a suitable mixer, preferably of the Gabbett type; to this suspension,

while still in a state of agitation, the oil emulsion is added. The

proportions requisite may vary somewhat and are shown in the

schedule. Roughly speaking, we have found that the oil addition

equal to about 7% upon the mineral present in the ore is suflicient.

A small amount of soap solution is also necessary to obtain good

flocculation and it appears to aid in the uniform dissemination of the

added oil emulsion through the pulp in the mixer. A very short

period of agitation is necessary to effect complete flocculation

1022 of the whole of the mineral, which readily subsides, leaving

. clear water above, opalescent with the soap added. The

tendency of our work has been to show that a very small amount of

soap is necessary and we have continually cut this down, almost to

the vanishing point; still a small amount of soap during flocculation

appears to be advisable. The clear solution still containing this

small amount of soap is run off from the floceulent precipitate and

can be used perfectly well on the next lot of mineral to be flocculated.

The whole of the oil added as emulsion appears to be taken up by

the ore, and none to remain in the opalescent but otherwise clear

liquor. The flocculating precipitate is so open that it drains most

readily from any remaining liquor which cannot be decanted. The

flocculent precipitate may even receive a plain water wash with

advantage. The mass is then put into about three to four times

its own volume of very dilute sulphuric acid, which may vary be-

39—Ree.

ah OMNI SO RRI eG ERIE REL EF IES DIP LRT IRE ES COE HAN RY SON GRR

610 BUTTE & SUPR, MNG, CO, V8. MIN, SEP., LTD, ET AL,

tween the limits of 0.055, to 0.1. Somewhat violent agitation is

now required for a period of a few minutes; the time being dependent

upon the efficiency of the agitation, and varying from 2 to 5 or 8

minutes, whereby the oil is released from the gangue and attaches

itself exclusively to the mineral, The mass changes in color and

becomes much lighter owing to the liberation of the pinkish-white

ganeue, but the mineral remains disseminated through this mass in

extremely fine granules, which require to be agglomerated by rolling

treatment. It is, however, found advisable before such roll-

1023 ing treatment is given to pour off or decant at least half of the

liquor resulting from the breaking down, and, with this, to

include as much of the fine but now clean gangue slimes as possible,

as the presence of very fine gangue slimes seems to interfere somewhat

with the attaining of hard mineral granules, The pulp, which now

consists of very fine oiled mineral particles dispersed through clean

gangue from which the finest slime gangue has been separated, is

placed in a cylinder and rotated about its horizontal axis at the rate

of about 60 to SO revolutions per minute (for ad” diameter evlinder)

for about ten minutes, This gentle rolling action has the effect of

making the mineral particles cohere and build up into the shot-like

granules required, When these are found to be of sutlicient: size

the rolling operation is stopped and the mass separated in any con-

venient or efficient upeast water separator, We have naturally not

been able to try the experiments on a sufliciently large scale to give

definite factors as to the amount of rolling travel requisite for the

agglomerating in large scale plant. Ina 4” eylinder about 1,200 ft.

of such rolling travel is necessary, but, with increasing quantities

the “mass fuetor” we find constantly tends to reduce the amount of

rolling travel, and it will probably be much less than the amount

mentioned when larger apparatus is emploved, We are constructing

a cylinder of 8” in diameter and 2’ in length fitted on the interior

with slotted partitions and with a continuous inflow and discharge

which will enable us to get at such a figure far more exactly.

1024 Finally, it is not always possible in the upcast apparatus used

by us on the laboratory scale to effect in one operation a sharp

separation into absolute gangue on the one side and clean

granules free from gangue on the other, Whilst the heaviest gran-

ules come away quite clean, and the lighter sands are easily elim-

inated, a middle portion is apt to be formed consisting of lighter

mineral granules mixed with the heavier sands; and any attempt

to treat this middle portion is apt to drive over some of the smaller

mineral granules with the heavy sands. We thus find it best in tests

with our present small laboratory apparatus (with which it is very

difficult to obtain uniform conditions and therefore uniform sized

granules) to pass our rolled product through the upeast apparatus

at first with only a comparatively light up-current of water, This

rejects the bulk of the gangue as light sands, but gives a product

containing all the granules mixed with some heavy sands. If this

second product be then given a short further rolling treatment the

fine granules become much larger and agglomerated with the heavier

BUTTE & SUPR, MNG, CO, VS, MIN, SEP., LTD., ET AL. 611

granules, and this product is then capable of a ready separation from

the remaining heavy sands in a sharp up-current of water,

It is obvious that many variations of such separation treatment

are possible, and that with a little experience a very simple and

efficient form of apparatus could be devised, Combinations of such

apparatus could be placed in series to deal with the various

1025 sund and granule products without the necessity for a second

rolling agglomeration, but up to the present the facilities at

our disposal, and the small scale upon which alone it is possible to

work in the !aboratory, have prevented us from using any but the

simplest plant. The chain of operations is therefore extremely

simple.

Firstly. Suitable crushing of the ore as specified.

Secondly, Floceulating the pulps with a small amount of soap

and oil emulsion in the proportions given using a fair proportion

of thick oil to kerosene. (It is only necessary here to note that

emulsions containing thick oil are rather more difficult to get com-

pletely “smooth” that is, free from unemulsified oil globules, than

with kerosene alone; but with a little care and experience a perfect

emulsion of thick oil is obtainable).

Thirdly. Breaking down the floceulent precipitate by strong

agitation with very dilute acid.

Fourthly. Gentle rolling to agglomerate the fine mineral parti-

cles into shot like granules.

Fifthly. The separation of granuler from gangue in a water

up-current,

We are, dear Sirs,

Yours truly,

SULMAN & PICARD.

1026 Addendum to Report.

We omitted to state that in our last experiment, No, 6, a further

simplification has been made which seems to promise well, The

flocculating stage has been abandoned and .05 to .1% acid has been

used direct for suspending the duly crushed ore in. The addition

of “thick oil plus paraffine” emulsion has been made direct to this,

and after a sufficient agitation period has been given to the mixture,

the gangue is found to be free and clean whilst the mineral is dis-

seminated through this in a state of very finely divided granulation.

On pouring off the bulk of the acid liquor, together with any fine

clean slimes which it may contain, and rolling the remainder as

usual, excellent granulation has been found to occur, We are not

yet sure how this treatment may act with finely ground mineral

slimes containing much blende, but experiments are in course to

determine this.

8. & P.

612 BUTTE & SUPR, MNG. CO, VS, MIN, SEP., LTD., ET AL,

1027 COMPLAINANTS’ Exutprr,

Sulman & Picard Report May 5, 19038.

Sulman & Picard.

44 London Wall, London, EF. C.

May Sth, 1903.

John Ballot, Esq., 607 Salisbury House, London Wall, E. C.

Dear Sir:

Cattermole Process.

We beg to report results of experiments on the above process.

Expt. No. 7. This test was made on Broken Hill ore ground to

GO mesh, 1,000 grarnimes of ore was used in two lots of 500 grammes

each, as the Gabbett mixer will not take more than 500 granimnes,

which portion was agitated with 600 ce, of 0.267 Sulphuric acid and

30 ce, of Soup emulsion, The emulsion was made up of 500 of oil

and 2; Soap; the oil being a mixture of two parts of residuum and

one part of parafline,

This charge was agitated about 10 minutes, half the time with the

baffle, and half without. The two charges were then mixed and

submitted to the rolling process in the Gabbett (without baffle) for a

period of three minutes, This treatment yielded satisfactory gran-

ules,

The charge was then put through an upeast separator to remove

the light sands.

1028 The heavier portion was rolled in a eylinder, especially

made for the purpose. This however did not have any bene-

ficial result, but on the contrary, rather tended to destroy the granu-

lation which had previously been obtained. This is probably ae-

counted for by the small quantity of ore used relative to the size of

the cylinder so that during the whole of the rolling the granules

were exposed to the air thus producing a considerable amount of

float.

The charge was next put through the upeast and yielded

COMTINET neces vccssencnsscescssenceengeces 450 grammes

Shoe de ie rose ad bush be Cae deckaveeds 504 2

The loss in total weight is due to a certain amount of mineral being

left in the evlinder.

The original assay of the ore used for this test was as follows:

DIET OM es had 5 be Cased cade eoee Ce ed bebbins ceniee 15.93 %

CIR ail sso da gad nw' end baded eek bake LuWe aad ee aus 16.71%

ces cca tos ducal cat UaueUchs da ct echoed, 48.35%

The Concentrates contained 6.6% of gangue, the balance being a

mixture of Galena & Blende, which was not analysed.

BUTTE & SUPR, MNG, CO, V8. MIN. SEP., LTD., ET AL. 615

The tailings assayed :

KSA RERES NO GHARPOOND CCT OHD SE OVD SEE SHUI NON AES RH 1.09%

PO EPCS ETE Ee TET Eee TTT Ter TT OEP OTT ETE TY T 1.63%

1029 Neglecting the amount of ore left in the cylinder the re-

covery in the concentrates equalled ;

COO ee oe eee CTT Ue CE TT CET eee Teer ee 96.3%

NN FRET OEE PE ee eT Py Pee TET Cer Cr eT TT eer err N4.856%

This and other experiments have led us to conclude that the roll-

ing process in a separate cylinder might be omitted and that the

whole process can be carried out in the Gabbett. A test was carried

out on a similar class of ore with the object of determining the cor-

rectness of this view.

Expt. 8. As nearly as possible the conditions of this experiment

us to the value of the ore, strength of the oil solution, time, ete.,

were maintained as in the previous test. After treatment of the

two lots of 500 grammes in the Gabbett, the two products were

mixed together and re-treated by rolling in the Gabbett, from

which the mixture was passed direct through the upeast and the

light sands taken off. The coarse product was then slightly acidu-

lated and re-treated in the Gabbett for 7 minutes and again put

through the upeast. This treatment resulted in’ three products

which consisted of :

557 grammes concentrates.

205 “a light sands from the first upeast.

200 2 tailings.

The original assay of the ore used in this test was as follows:

15.86%

CRP EERE CET VERE CRE EEWEDOOREOAVMOD CHE CE ROR RR OS 19.690;

PIE) Podiun becbedee su ahs sees baes Fo0de00eebasels BO,

1030) The concentrates contained: 11.6567 insolubles.

The light sands assayed :

LP TTT e RT PTECTT OPEL CRETE TE CPTE TE ULC CTE 4.290%

SOP ES EOE ETT TEP ETT TT Teer Tee L.88«%

The tailings assayed :

PEP TOE PTT OLE TUPLE EET EEC T LETC O TT Te 2.24%

Siri y as ake sed WeV EES 4 Reka e oh ek besaese es 0.91;

The final recovery therefore amounted to 96.40. of the Zine, and

92.06% of the Lead, or a mean recovery of 95.1% of the total metals

present in the original ore.

These encouraging results have decided us to erect a model plant

on the Gabbett system which will be capable of handling probably

50 Ibs. of ore per day. This plant is nearly complete, and will have

LACLEDE NAL NO I LDN acpi. ~ ree

614 BUTTE & SUPR. MNG. CO. VS. MIN. SEP., LTD., ET AL.

its first trial during the course of this week, the results of which will

be immediately reported to you.

Yours faithfully,

SULMAN & PICARD.

1031 CoMPLAINANTS FE.xnipit.

NSulman & Picard Report September 24, 1908,

Sulman & Pieard.

44 London Wall, FE. ¢.

24th September 1905.

John Ballot Esq.. 607 Salisbury House, FE. C,

Dear Sir:

Re Cattermole Process. a

We beg to append report on the progress of investigation of this

process up-to-date. Since our last report a very great amount of

work has been gone through, both independently by Mr, Catter-

mole and by ourselves, aided by our assistants Messrs. Pudsey &

Chapman. The work done may be summarized briefly by the letters

we wrote vou.

Firstly. On July 4th °03, advising you that the Cattermole pro-

cess was completed to our satisfaction so far as the granulation step

was concerned.

Secondly. Our letter to vou of July 27th “03, advised you to com-

plete the patent for the second or breaking down step as although the

trials were not complete considerable progress had been shown in this

direction,

Thirdly. On August 11th, we advised vou to complete the

10532) breaking down process patent, and expressed the opinion

that this second step now showed the prospect of being a con-

siderable commercial success,

The work done has been so voluminous including many inter-

views with patent agents and patent counsel (Messrs, Terrell K. C.

& Gordon K. C.) that we need only briefly refer to the chief lines

of investigation. We enclose you herewith a tabular view which

we drew out for the aid of counsel, setting forth the chief reaction

involved in the Cattermole Process,

Firstly we will summarize Mr. Cattermole’s independent work.

Nagyag Ore. (Poor.) Acid granulation apparently — useless.

Alkali granulation using emulsion of residuum oil 2 parts, paraffin

one part, gave fair results. In this case emulsions and circuits con-

taining natura! soaps worked best.

Assays, original ore:

Gold Oozs. 2 dwts. 21 grns,

Silver 3 ““ 18 a 12 “

REPRE AE GM LAl CRG NG ITE LEO RIL EO TR MN ee TENANT, SA TNR ENG EN A ANE BR TAS METI SE

BUTTE & SUPR. MNG. CO. VS. MIN, SEP.; LTD., ET AL. 615

Concentrates obtained:

Gold = Qozs. 11 dwts. & grns,

Silver 26 “ 12 “ *

Tailings:

Cold | las eo. 16

Sve i“ § * we *

A second sample gave good granulation in the same twpe of

1035 cireuit, but using as emulsion oil residuum 2 parts, paratiine

I part. A richer sample of ore was worked upon the original

assay Was not taken, but the concentrates obtained showed:

(iold (ozs. 10 dwts. 6 grins.

Silver 45 “ 14 * is

Tailings:

Cold po ea 2?

Bilver 1 © 3b © s

A considerable interval ensued, during which time a complete ex-

perimental plant was installed. This consisted of a series of 6 eir-

cular glass vessels, each fitted with a revolving cone agitator, the

nece sary power being derived from a 's-H.P. electric motor. The

series of agitation vessels were divided into two, one of four units, the

other of two. With each of these sets an up-current separation

device was placed in cireuit for the purpose of the separation of the

granules of mineral from the depleted tailings. The plant also

included a mechanical ore feed, and a glass emulsion tank fitted

with agitator, together with liquor reservoirs and return pumps.

After a few weeks the whole plant was put in satisfactory running

order, and the dimensions of all pipe circuits, rates of agitation ete.,

ete., satisfactorily fixed. A serie: of tests upon Broken Hill ore then

followed and demonstrations of the working plant were given to

vourvelf and friends associated with you namely, to Messrs,

1054 BLA, Govett, Mr. H.C. Hoover, Mr. W. W. Webster and also

to patent counsel, Messrs. Terrell K. CC. & Messrs, Gordon

.€2 Phe plant operates as follows: The vessels and separation

circuit are filled throughout with water, which may be either acic

or alkaline, according to the requirements of the ore to be treated ;

in the ease of Broken Till a circuit of 200 sulphurie acid was em-

ploved. The dry crushed ore is fed by the mechanical hopper into

the first cone agitator, where it also receives the due continuous

addition of emulsion from the emulsion tank alove. After receiving

its due rolling agitation herein it continuously passes into the second

vessel] where a like agitation is given, thence into the third vessel

and into the 4th. By this time granulation is well established and

the fine sands and slimes are sufliciently clean to enable them to be

removed; this is done by their continuous passage through the first

up-current separator, The fine slimes are rejected and after settling

the liquor is returned to the ordinary liquor circuit; then the heavy

616 BUTTE & SUPR. MNG. CO. VS. MIN. SEP., LTD., ET AL.

sands, together with the mineral granules, are continuously passed

from the bottom of the separator into the fifth and sixth cone agita-

tors, where, by a continuance of the rolling agitation the mineral

granules are so increased in size (and therefore in specific gravity) as

to enable them to Le tinally separated from the heavy sands by pass-

age through the second upcurrent separator.

The concentrations of Broken Hill ore effected in’ this

1035 plant have been exceedingly satisfactory, both slimes and

sands almost mineral free having been obtained, whilst con-

centrates continuously and automatically delivered from the exit

tube have been of high grade. The plant has shown itself capable

of continuous work and to have a capacity of about half a ton per

24 hours, although the vessels were of such small size, the glass agi-

tators not exe ceeding | the working depth of six to seven inches with a

diameter of 44, to 5 inches. If these dimensions be merely cubed

there seems reason to estimate that such a larger plant would treat 50

tons of material per day. A sample of Rosebery ere was also treated

in this apparatus, the material having been crushed to 60 mesh,

This was a copper-blende ore and granulated well, vielding a par-

ticularly clean gangue, whilst concentrates obtained “broke down”

excellently into separate copper and zine products, by the use of a

247 soft soap volution with 2 of caustic potash. Here, as in other

experiments, the facet was brought out that if emulsions containing

only lighter paratline oils be uved instead of those containing ‘‘resi-

duum” that weaker alkaline solutions are able to effect the breaking

away of blende from the concentrates. This is, however, to some

extent, counterbalanced by the fact that light oil emulsions for the

same class of reason do not so readily granulate fine blende-contain-

ing ores, and that an emulsion containing heavy residuum oils ts

preferable to effect. the ready cleaning up of zine-blende ore

climes.

1036 We experienced considerable difliculty at first in determin-

ing the minimum mesh to which it was necessary to grind

the Broken Hill ore experimented upon. We had several parcels

crushed to various meshes by Messrs. Johnson & Sons. The first

two pareels were ground to 60 and 120 mesh respectively, the 60

mesh sample appeared to work fairly well, but considerable difficulty

was found in dealing with the 120 mesh product. In order to aseer-

tain the reason of the difference, several assays were made,

The 60 mesh material gave the following results:

Er oe er ng ne en ee 89.00%

MU Re wale ee hae Gills Ciel Red Cw ee odo ope an 19.69%

Eh Tes Seiiig et de wk Wd We oe ae Oe 15.85%

A sieving test was also made which showed:

enn: ME oh ae aa ek dare 2.5%

a PAM ge Taint eee dy saulgag seit BY

i Peng. ors ae tN VA chek & sn op nse SORE 4B%

PU NEY SO MNO oi Vee vi obec andcteeesies 40%

BUTTE & SUPR. MNG, CO. VS. MIN. SEP., LTD., ET AL. 617

Whereas the 120 mesh material showed on assay:

EES EI POE ra ere Pee 62.35%

aa Putainet Ca aaa wae cathe k ea ew vx Vora oa eas 8.45%

Pies RR wk eral en Vial pai WOR oR A ee 9.4%

A check assay on another sample of 120 mesh also showed:

ee aia a se Swi +0 Mo PRON 4 eS 66.55%

a ee ute ca late wale a sipikcnua Kew A nare ee 7.17%

Ses what ee EN SLM acd ts 2 oe wah ae AES 2 aie We Os 8.85%

1037 A sieve test showed:

a eee ern re 35%

hia So wcie ian wie ane wea en 65%

The two parcels were therefore entirely different in nature, the

120 mesh product being so poor and differing so much from the

original ore as to give rise to the suspicion that it had been derived

by sifting the finer portions of the 60 mesh product, although strict

instructions had been given that such a method of producing 120

mesh material was not to be followed. We were confirmed in our

belief by the fact that fresh Broken Hill ore reduced to 120 mesh

on the bucking table was found to granulate quite readily. For-

tunately, the succeeding fortnight’s experiments which were car-

ried out, not only in the large test plant, but in a small independent

Gabbett cone mixer, subsequently erected for experimental work,

demonstrated that it was unnecessary to reduce Broken Hill ore

beyond 60 mesh in order to secure excellent results.

A certain amount of fine material as well as coarse is necessary to

the building up of coherent granules, but the sieve analysis of the

60 mesh material just quoted shows that upon crushing to this maxi-

mum mesh quite a sufficient amount of material finer than even 120

is produced for all granulation requirements. The first granula-

tions obtained from a trial on the new plant yielded concentrates

containing 20.85% of insoluble matter, i. e., gangue. Too

1038 much oil emulsion had been used in this case and by further

reduction (to about 6%) granulation was found not to be

interfered with, and the concentrates only retained 12.15% of in-

solubles. A still further reduction was made in the oil additions

when it was endeavored to add oil emulsion in the proportion of about

5% of oil upon the actual mineral present in the ore. The concen-

trates obtained contained :

oe A ate POE OR EE ETE ae ee enn 30.73%

sc eis dae eek ed Wad a4 es oa ee ie ee Oe aa 24.65%

Rt au oat o. Liisa Lit es babs oes hago ae oe coon 1.7%

ee a ese ee eee oa seh aw aa a gia nok 5.35%

ee ee ee oe 11.91%

618 BUTTE & SUPR, MNG. CO. VS. MIN. SEP., LTD., ET AL.

The concentrates were thus of excellent quality, but the sands

both coarse and fine were not quite freed from mineral, The fine

sands were found to contain:

yh all Saat 282) Ae hy as Pee AD RAN Oe ooo pe Da Ie os 5.115%

FO Ee BI SE Re POD amc Leet kA Pi ee rE Mae RE BS fe §. 19%

The coarse sands contained:

ee on Jai bi bale es ob eee eee ere ineN tt eweleet 3.07%

Dy A SRS cee teagan RE ne BAP ee ee Ee EE 6.59%

It was found however that the coarse and fine sands which still

contained mineral values, held these in a partially granulated state,

and their inclusion in the sands was due,

(a) to insufficient granulation,

(b) to the difficulty of making an absolutely sharp separa-

1039 tion in the up-current separators employed. Mixing these

two products together and reagitating them in vessels 5 & 6

of the trial plant, the remaining mineral contents regranulated

vielded an almost absolutely sharp separation from the sands. We

have here only briefly summarized granulation work done to date,

although the actual experiments extended over a considerable period ;

details of many negative trials necessary to establish these conditions

can be seen in our own and Mr. Cattermole’s notes.

The results obtained however fully justify, we think, our advice

to you to exercise your option with regard to the granulation portion

of the Cattermole process.

We next devoted our attention to the “breaking down” invention

and for a time had little but negative results to chronicle. Mr. Cat-

termole found great difficulty in separating the blende from the

galena in Broken Hill concentrates; we pointed out that caustic

potash was too expensive an alkali for commercial employment and

requested him in future to confine himself to the employment of

caustic soda, This alkali has the disadvantage of producing® rather

more insoluble soaps and emulsions and some investigation was

required to fix a fresh series of minimum strengths for its use in

place of caustic potash.

Again the use of plain parafline emulsions had been discontinued

for some time for granulation purposes in favour of emulsions con-

taining from a third to a half of their oil contents of residuum.

1040) This material, owing to its viscosity, was found to be less

readily emulsified than paraffine and therefore to give greater

trouble in breaking down. These unexpected results gave a tem-

porary check to the development of the breaking down process (now

generally referred to as “classification”) and in order to economise

time Mr. Cattermole worked mainly by bottle methods, independently

of our own investigation aided by Messrs. Chapman & Pudsey in the

endeavour to overcome this difficulty. Various forms of mechanical

7 were devised by Mr. Cattermole and ourselves with the

object of aiding the breaking-down liquors. Gabbett cones driven

Le. ne ee ee

BUTTE & SUPR. MNO. CO. VS. MIN. SEP., LTD., ET AL. 619

at increased speed and supplied with additional rotating and sta-

tionary baffles were first used, but without success. A type of appa-

ratus capable of even more violent agitation was then bought, on

the type of an egg-beater, which gave slightly better results. In

order to confirm Mr, Cattermole’s contention that attrition of the

granules with the breaking down liquor was needed to effect a separa-

tion, a small clean-up pan was bought from Messrs, Fraser and Chal-

mers and added to the trial installation. This certainly aided con-

siderably in classification and the first definite result in splitting up

the granules obtained from the trial plant into blende and galena

products, was obtained in July, by Mr. Pudsey.

The zine product showed on assay :

DE te sadasds Saved et ervebbatee 40s eeenesantaeues 42.35%

MEE CULutcs ME EUEAEEN LA Ph eet) ce aa baw hewn 14.08%

1041 The lead product contained :

Zine CCC HCO CHOCO HOH CHC TOR CHCHHRET OTHE TOE EH EHO NOS 9.91%

MSc hese ecnk wks + eae VeSe ork Nanod eek uae ad ces 64.08%,

Though neither of these products is sufficiently good the figures

mark a considerable advance on anything previously done. Mr.

Cattermole, in the meantime, came to the conclusion that it was

impossible to separate the whole of the blende in one operation, but,

that as in granulation, it was advisable to separate the fines (blende )

firstly and to treat the product containing all the galena and the

coarse blende with a somewhat stronger solution to effect the separa-

tion of the latter mineral. He also found that the breaking down

solution should also be “fed” with a certain amount of fresh oil in

order to prevent it from taking out too much of the oil held by the

granules in the first breaking down stages. Many excellent separa-

tions were obtained by him on the bottle scale about this time, but

we did not consider it advisable to analyse any of these products

or to be content with any results not obtained by the mechanical

means, Towards the end of July, working in the independent Gab-

bett mixer upon the lines just specified, Mr. Cattermole succeeded in

obtaining the following classifying products:

2 Blende Slimes.

PS o's oo hae chad aU ee ae kl ae ober ees 43.12%

SP PR OR Re ee es Pe aA re OPENER 12.82%

1042 » # Coarse Blende,

(Representing the bulk zine product.)

BR Uae bck Wika ant are gin are aes tre els ee eer 44.6%

4 nc Ube nee ann bbens se eanaeWacvees ke xeseeee 9.28%

620 BUTTE & SUPR. MNG, CO, VS. MIN. SEP., LTD., ET AL.

The bulk of the lead product showed:

SF eo FAVE ORANG Ae base 488 TPS ee TT eee 6.45%

er eee ieee wala e elk cand aS EKA OR dee eh 77.79%

These results again show further improvement. Jigging methods

for the separation of blende from galena granules did not give such

good results; the lead product remaining giving an assay of:

Pe eee ae ST Sa HS OF PR ae SPE yh Ae PE a 16.8%

SE oe te ee fe aha eee rahe ee a wrallg 52.5%

Mr. Cattermole now devised 3 or 4 different types of beating

separators which he constructed and experimented with, and which

combined factors of violent agitation, a continuous upward but

pulsating flow, and to some extent gradation and the separation of

particles. by the use of a cone shaped vessel. The results obtained,

though giving indications of promise, were not sufficiently conclu-

sive to permit us to advise you to continue experimental plant ex-

penditures in this direction. At a later date, however, it may be

advisable to go over a portion of this ground again. The use of

residuum was now reduced to a minimum in the granulation process,

paraftine being mainly employed; using such, and paying great

attention to the rapidity of agitation employed in the break-

1043 ing down process, and also the proportion to be observed be-

tween breaking down liquor and granules (these factors being

established mainly by independent work done by ourselves and

staff), Mr. Cattermole in August, finally produced the following

classification results:

Fine Blende Product.

EE Ree beat merase ae Cs hE Ney Ge 46.38%

ON PETER CD ETE chen TAS SC, Ra oy te a a er aR 8.003%

SEN ee Et ari rear, aa Wa ee a Nee ene ee a 49.09%

I No at a a aioal eh ee ee oe els 4.48%

ENE Ue a cunnicte sede bie Mee 6 ee RET Ss baled a AS KO 18%

RN ra enn nore Mn argh Al a ka Seale wh Re pied ee 9 8 6%

The lead product showed a contents value of,

aed He Gk Re OES AS KS SAR RA OA Ree re 6.05%

Bs aie aes Sark beater eee a ee ee ae 66.59%

We need hardly say that we consider that these results, showing

as they do that it is possible to obtain by means of Cattermole’s pro-

cess excellent smelting products, in both cases free from any smelting

penalty, justified us in advising you to complete your option upon

BUTTE & SUPR, MNG, CO. VS. MIN, SEP., LTD,, ET AL. 621

the breaking down portion also of Cattermole’s process, We do not

propose here to give a detailed resume of all the experimental work

done by us during this period, but we append one list of

1014 tabulated results upon Gabbett agitations as a type of the

investigations, We may add a few remarks in conchision.

The acid process does not appear applicable to West Australian ore

as typified by a sample of Oroya ore, where it appears necessary to

dry crush and uve a soap circuit; now has Mr. Cattermole been sue-

cessful in granulating mineral from the highly complex Nagyag

ores last obtained from Mr. Alexander Hill, These samples differ

somewhat from those obtained by us in April and May from the

ergrath Steinhaus upon which, as already noted, good results were

obtained, It is, however, very satisfactory to record the fact that the

granulation of Broken Till: ore proceeds nmoncing well in highly

saline waters, made up by us to represent Western Australian water

supplies, if 24% of acid be used in the circuit. We also enclose a

tubular view of Cattermole and similar reactions, which were drawn

up hyous in July for the aid of counsel,

We are, dear Sir,

Yours faithfully,

SULMAN & PICARD.

BUTTE & SUPR, MNG. CO, VS. MIN. SEP., LTD., ET AL.

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626 BUTTE 4 SUPR. MNG, CO. VS. MIN, SEP., LTD, ET AL.

Compiarsants’ Exurner,

Salman & Picard Report November 19, 1008,

Sulman & Piewrd,

44 Lenden Wall, Londen, E. C

Reewived LOT D4n

Partially \iel, 23-11-4065,

Now, 1th, 1908,

John Hallet, Bey. Chairman, Cattermole Ore Concentration Syndi-

cate, Lid, 607 Salisbury House, B.C.

Deak Sie: We beg te report te vou upon work done since the date

of restarting the experimental plant on October Sth,

Broken Hill Ore, 3 sacks of ore were freshly crushed by Mowre.

Johneon & Sone te 60 neh,

Mant, This wae cleaned up, new rubber joints being fitted to all

pipes, and a new fulleway tap to water feed. The following

1018 defeets were alee remedied: iron pipes in sump removed ow-

ing te correion by acid and low of latter, If found to be

necowary they will be replaced by earthenware pipes. The spindle

bearings were renewed, but after «hort run, the wear being very ap-

parent, it was decided to abandon the bottom bearing entirely, Gun-

teal bearings above the cone were subletituted, but the cutting action

of the sands (garnet) together with electrolytic action between bree

beoring and steel spindle «0 rapidly destrewed the latter that this

method had te be abandoned. Brae «pindles were obtained from

Mewrs, Still & Co. only the top bearings being retained in their en-

tirety, but wooden blocks a* rough guides were subsequently fixed

below, Se far this «vetem has worked very well and ix an important

point gained in simplifying the larger plant.

The cone screw connections between the bearing shaft« and spin-

dlew have now been soldered solid to the spindles, the former loose

serew connection with indiarubber washers having given much

trouble.

The exit pipe from the tint series of mixers, into the first upeast,

wae found to be unsatiefactory when merely horizontal, It has been

replaced by a bent tube, the top of the bend reaching the level of the

ton of the last cone. Thix change largely prevents blockage of the

tube by ore, and acts a* an air trap to a considerable extent,

3” pullews were obtained to be fitted (interchangeable with

1040 existing 1')” pulleys) to mixers 5 & 6, in view of slower

rolling having been found advisable for the completing of

the “granulation” proces on several occasions previously.

The Second upeast was increased in length to give a better separa‘

tion and slightly increased in width. It was also fitted with a coned

valve to aid in closer regulation of the downeast current. It was

found aleo that if the delivery pipe from No. 6 mixer into the see.

BUTTE 4 SUPR. MNG, CO, V8. MIN. | EP., LTD, ET AL. 627

owl upeast were permitted to dip below the surface of the liquor in

the downeast tube of the letter, that much air was drawn down with

the pulp whieh ewused flotation low of mineral in coarse sands, If

the delivery tube be cut short exactly at top of upeast but little air

difficulty is experienced.

Many other minor alterations made and defeets remedied which

need not be specified here, but of which note has been made for fu-

ture application in regard to the larger plant,

The “10 ton” plant, (so-called, although until the first runs therein

are made it ix imposible to gauge, even approximately, its capacity

per 24 hours), has been designed on lines shown by experience gained

with the «mall plant to be the most desirable, 40 gallon earthenware

pare with rounded bottoms are being specified as mixers, the number

and disposition being the same as in the small plant, but with the

addition of another series of 3 for retreating the coarse sands

1050) if such should be found necessary,

The small duplicate of present plant on order from Messrs,

Stil! & Co, for Mr. Courtney, is progressing somewhat slowly, The

spindle and bearings are made, ax also are the bras collars and con-

nections for the mixers, The glasses are in course of cutting and

fixing. Mesrs. Still inform us that they hope to complete the plant

in ebout 10 days from date.

Emulsion uced in following triale: Owing to the colder weather

the RP, type was found to become too thick to flow freely thro’ the

«all tape used to regulate the emulsion additions and R,P,, 33%

(ee l6'S9 Residuum & 16'S paraffine) with 3.9) soft soap and

OT water used. This emulsion was not quite so good a granu-

later for zine slimes as the thicker, bat had been previously found

preferable for suleequent “breaking down” operations,

1051) Broken Hill Grading Test (Ore Crushed to 6O Mesh).

+ 60 mesh <= 6.10% |

— W+ = 17.35%

— + We 9.40%

This text is long and has been trimmed here. Open the source document for the complete record.