Scholars' Mine
Bachelors Theses Student Theses and Dissertations
1917
Concentration of a Joplin slime by flotation
Earl Joseph Weimer
Walter Harry Freudenberg
Follow this and additional works at: https://scholarsmine.mst.edu/bachelors_theses
Part of the Mining Engineering Commons Department: Mining Engineering
Recommended Citation Weimer, Earl Joseph and Freudenberg, Walter Harry, "Concentration of a Joplin slime by flotation" (1917). Bachelors Theses. 146. https://scholarsmine.mst.edu/bachelors_theses/146
This Thesis - Open Access is brought to you for free and open access by Scholars' Mine. It has been accepted for inclusion in Bachelors Theses by an authorized administrator of Scholars' Mine. This work is protected by U. S. Copyright Law. Unauthorized use including reproduction for redistribution requires the permission of the copyright holder. For more information, please contact [email protected]. COUCENTRATIon OF A JOPLIN SLII.r2j BY FLOTATION.
BY
EARL JOSEPH VffiI1mR
AIID WALTER HARRY FREUDEUBE3G
A
THESIS submitted to the faculty of the SCHOOL OF I,IIHSS ArID IJETALLURGY OF THE UUIVE:2SITY OF MISSOURI
in partial fulfillment of the work required ~or the Degre'e o:f
-BACHELOR OF SCIEnCE IN MINE ENGInEERING AND
BACHELOR OF SCIENCE IN METALLURGY Rolla, Mo. 1917
~/ /~~---, Approved by ,d.~ ~ ~~-~/ Associate Prof"essor of' Metallurgy and Ore Dressing. TABLE OF conTENTS
Introduction ••••••••••••••••••••••••••••••••• Page 1.
Preliminary Te sts ••••.••••••••.••••.•..••.••• H 2.
Screen Ana1ysis o~ Ore ••••••••••••••••••••••• n 3. Oils Used (Name and Source) •••••••••••••••••• tT 4.
Flotation llLachine Diagram ••••••••••••.••••••• !T 5. Experiments ••••••••••••••• ...... IT 6-45.
n Conclusion o~ Experiments ••.•••••••.••••••••• 46-48. -1-
conCENTRATIO:tI OF A JOPLIN SLIME BY FLOTATION
Introduction:
Concentration of the Joplin slimes by means of flotation is a subjeot receiving considerable attention at the present time, due to high price of zinc. These slimes are the accumulation of the finer particles of the ore during the mill ing prooess, and their zinc content is well worth considering. The praotice in the past has been to sluice these slimes into the tailing pond, as no economical method of saving the zinc had been employed. The objeot of our experiment was to economically extract from these slimes by :flotation, a product of" suff icient zinc oontent to be of commercial value. The slime we used was from the S. J. Ramage Mill No.6. West Joplin. It was received dry, and used that way for all experiments. We performed ten experiments in the Mineral Sep aration machine, with very little suocess. This was due, we think, to the fineness of the ore. The results of these ten experiments were so poor, that we did not reoord them. The results reoorded in this thesis are from exper iments performed in the Callow pneumatic flotation machine in the flotation laboratory of the Missouri Sohool of Mines and Metallurgy. -2-
In determining the nature of the are, such charact eristics as its acidity or alkalinity, chemical analysis, physical analysis, and screen analysis were determined.
Results Physical Analysis OI the ore (microscopic).
Chert and calcite. Sphalerite, galena and pyrite. No included material observed.
Chemioal Analysis of the ore. Zinc Lead Iron 0.90% 0.65%
Complete Analysis o~ the ore. Gc. ~c\ ZnS PbS Insol. Solubl.~ by d'ff. 8.80% 2.29% 81. 67tfo 6.08%
Alkalinity o~ Charge. It required 0.387# acid to neutralize one ton of pulp.
Note: Weight of oil in thesis calculated in
#/Ton o~ dry ore. The Tyler Standard Screen Scale Cumulative Direct Diagram of Screen Analysis on Sample of_~~bn 5 I ; n~~ ____- Name. Date_0l?1iL 30, '9'2-----.-----
100
I 90
80
CfJ I- 70 I CJ ijj S 60 IJ.. 0 (f) I- Z 50 W U r:r W D..
40 W ~ ~ :J 30 ~ :J U
20
to
o SCREEN SCALE RATIO 1.414
,te the Screen SCREEN SCALE RATIO 1.414 WEIGHTS AS~~J~_.___ C~~'!'~~TS __ i. % of Total Conte_~t bed through Openings I also First , Diameter Per Cent I 'I' ! II :etaining Mesh Wire ~a~~le Per Cent Cumulative I I 1 , Milli· Inches elg ts Weights I I ! I Screen Inches meters
1.0QO 26.67 .74~ 1S.S .5~t 13.3 f .:B7t ~.4t ;i; .26$ ~.i38 3 ::~!~~~: :~~:: ~~~~~~ ~.~ §~ ~~~::: •~: ~::~~. ::: :i~:' jj:~ -~j 1:;:j~j:I--jjjjj ij--j~. 4 .131 6 ______- ______------,------:-______1 ______- ______• S 10 ______'- ______- ______1 ______-1------______. 14 1 ______.Jt.J' ______--- ______, ______: ______20 , i 28 .,,tf '1 36 :::::::::::: :::::::::::: :-:: -::::::: :::::: -:: ::::: :::::: -:-::::: ::: ::J:::::f::::: ::::::: :::::- 48
----!- --'--'.'--'-
THE W. S. TYLER COMPANY, CLEVELAND. OHIO -3-
SCREEN ANALYSIS --OF ORE
Mesh '.7eight Per Ou.mu- Assay
4, Thru On Grams Cent 1ative 1° % Zinc
1 65 100 10 2.50 100.00 0.58
2 100 150 5 1.25 97.50 0.96
3 150 200 23 5.75 96.25 1.15
4 200 220 5 1.25 90.50 1.06
5 220 240 7 1.75 89.25 1.05 6 240 260 80 20.00 87.50 2.13
7 260 270 67.50 67.50 6.27 400 100.00
standard screens were used. -4- ----OILS USED
La.b. :Number Name Company 6 No. 8 Flotation Oil General Naval Stores 7 No. 17 Flotation Oil " n 9 No. 22 Flotation Oil n Tf
15 No. 6 Pine 011 fT TJ n
16 Re£ined Pine Oil Fla. ~ood Products 17 No. 200 Flotation Oil Pensacola Tar & Turp. 18 No. 400 Crude Wd. Creosote n 11 n
19 No. 80 Crude Viood Turps. IT Tf
20 No. 15 Special Rosin IT H TT 21 No. 75 Crude r,vood Turps. " 22 No. 1580 Spec. Pine Oil Tf If ff
23 No. 350 Crude Wood Oil TT 1T n 25 No. 20 Flotation Oil General Naval Stores
26 No. 1 Creosote Oil American Tar Products 45 Rosin Oil Eimer and Amend 54 Cryesylia Acid Meyers Bros. Drug 55 Rosin Oil n " 56 Creosote Oil (26%) 11 n TT 58 No. 1 Flotation Oil Barrett M£g. 59 No. 2 Flotation Oil n n 60 No. 4 Flotation Oil " If 67 Ca161 "Bn Oil standard 011 84 01eio Acid Eimer and Amend 109 Uo. B-12 Oil United Naval Stores Notw: No. 56 Creosote 011 (26%) appears in thesis as Creoeote Oil. -5-
CALLO~7 PNEUI,L'!.TIC FLOTATION HACHllrE
[D
------f, ------1 / I" -6-
EXPERIMENT No.1.
Charge Ore 800 gm. Water 5600 gm. Reagents used O.50#/Ton No. 17 Flot. Oil.
Ti~e of Agitation 1 hr. 30 min.
Results
Assay o~ Concentrates Zinc 45.60%
Lead.
Iron 0.34'%
Assay of Tails Zinc 1.50%
Extraction
Weight 0'£ Concentrate 80 gm.
Extraction 7'1.60(.;&I -7-
EXPERIMENT No.2.
Charge Ore 800 gm. 'Water 5600 gm. Reagents used 0.47#/Ton No. 6 Flot. Oil. Time of Agitation 1 hr. 15 min.
Results Assay o£ Concentrates Zino 46.00% Lead 5.96%
Iron o. 25)~
Assay of Tails Zinc 0.80%
Extraction Weight of Concentrate 92 gm. Extraction 90.00% -8-
EXPE3II.IEHT IT o. 3.
Charge are 800 gm. ',Vater 5600 gm. Reagents used 0.58#/ Ton, No. 8 Flat. Oil. Time of Agitation 1 hr. 30 min.
Results
Assay of Concentrates
d Zinc 41 • 20/0 Lead 6.41% Iron 0.34%
Assay of Tails Zinc 1.58%
Extraction
Weig~t of Concentrate 89 gm. Extraction . 77.60% -9-
EXP"SRIMElTT Eo. 4.
Charge. Ore 800 gm.
Vlater 5600 gm. 2eagents used 0.60#/ Ton, No. 1580 Spec. Pine Oil Time OT Agitation 1 hr. 15 min.
Results
Assay of Concentrates Zinc 36.51%
Lead 5.00% Iron 0.32%
Assay of' Tails Zinc 0.64%
Extraction ':Teight of' Concentrate Extraction -10-
EXPERIl1ENT No.5.
Charge Ore 800 gm. Water 5600 gm. Reagents used 0.42#/ Ton, No. 15 Spec. Rosin Oil. Time of Agitation 1 hr. 00 min.
Results
Assay of Concentrates Zinc 39.50% Lead 5.10% Iron o. 267~
Assay of Tails Zinc
Extraotion
~eight of Concentrate 75 gm. Extraction 63.00% -11-
EXPERIMEnT no. 6.
Charge Ore 800 gm.
'~Vater 5600 gm.
Reagents used 0.50~J1..j Ton, No. 17 Flet. Oil. 0.20#/ Ton Turpentine (pure). Time of Agitation o hr. 45 min.
Results
Assay o~ Concentrates Zinc 43.70% d Lead 6 • 40jO Iron 0.37%
Assay of' Tails Zinc 1.70%
Extraction rfeight of Concentrate 80 gm. Extraction 74.30% -12-
EXl'E:2ItlEUT Ho. 7.
Charge. Ore 800 gm. Water 5600 gm. Reagents used 0.48#/ Ton, No. 200 Flot. Oil. Time of Agitation o hr. 45 min.
Results
AsSay of Concentrates Zinc 39.70% Lead 5.60'% Iron 0.47%
Assay of Tails Zinc 4.12%
Extraction
~.7eight o:f Concentrate 40 gm. Extraction 33.70% -13-
EJePERIMENT :No.8.
Charge
Ore 800 gm.
Vlater 5600 gm.
Reagents used 0.48=/1=/ Ton~ No. 75 Crude fi·~-ood Turp. Time of Agitation o hr. 30 min. I
Results
Assay o~ Concentrates
Zinc 40. 30~;0 Lead 7.50'% Iron
Assay of Tails Zinc 3.10%
Extraction
~eight of Conoentrate 60 gm.
Extraction 51.30}~ -14-
Charge Ore 800 gm. Water 5600 gm. Reagents used 0.50#/ Ton, No. 400 Crude Wd. Creosote Time of Agitation 0 hr. 30 min.
Results
Assay of Concentrates Zinc 37.10% Lead 5.80% Iron 0.38%
Assay of Tails Zinc 2.68%
Extraction Weight of Concentrate 75,. gm. Extraction 59.00% -15-
EXPERTMElrT no. 10.
Charge Ore 800 gm. Vlater 5600 gm. Reagents used 0.58#/ Ton, Special Orude Pine Oil. Time of Agitation o hr. 30 min.
Results
Assax of Concentrates. Zinc 34.20%
~ead 5.30% Iron 0.40%
Assay of Tails Zinc 2.50%
Extraction Weight of Conoentrate 86 gm. Extraotion 62.30% -16-
EXPERIMRNT No. 11.
Charge
Ore 800 gm. Water 5600 gm. Heagents used 0.47#/ Ton, No. 6 Pine Oil. 4.50#/ Ton Sulphurio Acid. 1.20//=/ Ton Copper Sull'hate. Time of Agitation o hr. 30 min.
Results
Assay o~ Concentrates Zinc 14.40% Lead 2.10% Iron 0.53%
Assay of' Tails Zinc 5.37%
Extraction Weight of Concentrate 50 gm. Extraction 15.26% -17-
EXPERIi;JEUT No. 12.
Charge Ore 800 gm. Water 5600 gm. Reagents used 0.60#/ Ton, No.4 Flot. Oil. Time of Agitation o hr. 30 min.
Results
Assay of Concentrates Zinc 43.10% Lead 6.40% Iron 0.34%
Assay of Tails Zinc 1. 48j'0
Extraction Weight of Concentrate 85 gm. Extraction 77. 80~~ -18-
EXPERIJvIENT No. 13.
Charge
Ore 800 gm. 'vVater 5600 gm. Reagents used 0.48#/ Ton, Uo. 1 F1ot. Oil
o. 48-~i: ,."/ Ton, rIo. 2 Flot. Oil Time of Agitation 0 hr. 30 min.
Results
Assay of Conoentrates Zinc 45.70% Lead 5.90% Iron
Assay of Tails Zinc
Extraction Weight of Concentrate 89 gm. Extraction 86.50% -19-
EXPEllIIvlENT no. 14.
Charge
Ore 800 gm. Water 5600 gm.
Reagents used. 0.59#/ Ton Calol nBTT Oil. Time of Agitation 1 hr. 00 min.
Results
Assay of Concentrates
Zinc 25.2050
Lead 3.20% Iron 0.37%
Assay of Tails Zinc
Extraction Weight of Concentrate 77 gm. Extraction 41.20% -20-
EXPERIMENT No. 15.
Charge Ore 800 gm.
Water 5600 gill. Reagents used 0.50#/ Ton, No 20 Flot. Oil.
Ti~e of Agitation o hr. 45 min.
Results
Assay o£ Concentrates Zinc 34.10% Lead 4.00% Iron 0.32%
Assay of' Tails Zinc 2.67%
Extraction
~7eight of Concentrate 82 gm. Extraction 59.20% -21-
EXPERITI1EUT No. 16.
Charge
Ore 800 gm. fJater (warmed) 5600 gm.
Reagents used. 0.47:i~/ Ton, No. 80 Crude Wood Turp. Time of Agitation 1 hr. 00 min.
Results
Assay of Concentrates Zinc 44.70'% Lead 6.15% Iron 0.35%
Assay of Tails Zinc 1.87%
Extraction Vleight of Concentrate 75 gm. Extraction 71.20% -22-
EXPERIMEnT No. 17.
Charg'e
Ore 800 gm. Water 5600 gm. Reagents used 0.60#/ Ton Creosote Oil. Time o£ Agitation 1 hr. 00 min.
Results
Assay of Concentrates
Zinc 45.00% Lead 6.60% Iron 0.21%
Assay 0:[ Tails
Zinc
Extraction Weight of Concentrate 93 gm. Extraction 88.90% -23-
EXPERIMENT No. 18.
Charge Ore 800 gm. Water 5600 gm. Reagents used 0.50#/ Ton, No. 17 Flot.Oil. 24.00#1 Ton Cone. Nitric acid 6.00#/ Ton Potas. Nitrate. Time of Agitation o hr. 30 min.
Results Assay OI Concentrates Zinc 30.00%
Lead 2.18% Iron 0.40%
Assay o:f Tails Zinc 4.25%
Extraction Weight OI Concentrate 52 gm. Extraction 3~.lO% -24-
EXPERIlv~:NT No. 19.
Charge
Ore 800 grn. Water 5600 gm. Reagents used 0.46#/Ton, No. 17 Flot. Oil.
5.00#/Ton NaHS04 • Time of Agitation o hr. 30 min.
Results
Assay o~ Concentrates Zinc 48.50% Lead 5.70% Iron 0.66%
Assay of Tails Zinc 2.53%
Extraction Weight of Concentrate 60 gm. Extraction 61.70% -25-
EXPER IV[ffiNT If0 • 20.
Charge
Ore 800 gm. Water 5600 gm. Reagents used O.46#/Ton, No. 17 Flot. Oil. 3.00#/Ton Copper Sulphate.
3.40#/Ton Sul~huric Acid. Time of Agitation o hr. 30 min.
Results Assay of Concentrates Zinc 26.60%
Lead 1.90% Iron 0.60%
Assay of Tails Zinc 4.95%
Extraction Weight of Concentrate 30 gm. Extraction 16.90% -26-
EXPERllKENT No. 21.
Charge
Ore 800 gm. Water 5600 gm. Reagents used 0.50#/Ton, No. 109 Flot. Oil. Time o£ Agitation o hr. 30 min.
Results Assay of Concentrates Zinc 36.00% Lead 2.10% Iron O.3?%
Assay of Tails Zinc 2.52%
Extraotion Weight of Concentrate 50 gm. Extraction 3S.10% -27-
E:x:PERlivlEHT no. 22.
Charge
Ore 800 gm. Water 5600 gm. Reagents used 0.49*11/ Ton Creosote Oil. Time OI Agitation o hr. 30 min.
Results Assay of Concentrates Zinc 47.10% Lead Iron 0.40%
Assay of Tai1s Zinc 1.10%
Extraction Weight of Concentrate 100 gm. Extraction 93.50% -28-
EXPERIIJEHT No. 23.
Charge
Ore 800 gm. \7ater 5600 gm.
::1eagents used O.45#/Ton9 No. 6 Pine Oil. 2.50#/Ton Copper Sulphate. Time OI Agitation o hr. 45 min.
Results
ASS8X of Concentrates
Zinc 17.90% Lead 1.90% Iron 0.35%
Assay.!! Tails
Zinc 4.75%
Extraction
Weight of Concentrate 70 gm. Extraction 26.60% -29-
EXPERI1rnNT No. 24.
Charge Ore 800 gm. Water 5600 gm. Reagents used 0.60#/Ton, No. 17 Flot. Oil. O.20#/Ton Turpentine (pure). 4.50!I=/Ton Copper Sulphate. Time of Agitation o hr. 30 min.
Results
Assay o~ Concentrates Zinc 19.20% Lead 1.75% Iron 0.33%
Assay .2f Tails Zina 4.33%
Extraction Weight of Concentrate 85 gm. Extraction 34.60% -30-
EXPERlj:-iIENT :No. 25.
Charge
Ore 800 gm.
Water 5600 gm. Reagents used O.49#/Ton Creosote Oil. Time of Agitation o hr. 45 min.
Results Assay of Conoentrates Zinc 39.44%
Lead 2.06% Iron 0.36%
Assay of Tails Zinc 2.88%
Extraction Weight of Concentrate 66 gm. Extraction 55.00% -31-
EXPERlltmNT No. 26.
Ore 800 gm. Water 5600 gm. Reagents used O.49#/Ton Creosote Oil.
3.20#/Ton NaHS04• Time of Agitation o hr. 45 min.
Results Assay of Concentrates Zinc 26.65% Lead 2.10% Iron 0.39'%
Assay: of Tails Zinc 2.94%
Extraction Weight of Concentrate 100 gm. Extraction 56.50% -32-
EXPERIUENT no. 27.
Charge Ore 800 gm. \7ater 5600 gm. Reagents used 0.49#/Ton Creosote Oil. Time of Agitation o hr. 45 min.
Results
Assay o~ Conoentrates Zinc 44.24%
Lead 4. BOSh Iron 0.37%
Assay of Tail.s Zinc
Extraotion Weight of Conoentrate 65 gm. Extraction 61.00% -33-
EXPERlrI3NT No. 28.
Charge are 800 gro.
Water 5600 grn. Reagents used 0.75#/Ton Creosote Oil. Time of Agitation 1 hr. 00 min.
Results
Assay o~ Conoentrates
Zino 41.20% Lead 4.50% Iron 0.41%
Assay of Tails Zinc
Extraotion
Weight o~ Conoentrate 71 grn. Erlraotion 61.60% -34-
EXPERIx,BNT No. 29.
Charge Ore 800 gm. Water 5600 gm. Heagents used O.49t'1-/ Ton Creosote Oil. 3.50#/Ton Al(OH)3. Time of Agitation o hr. 45 min.
Results Assay of Concentrates Zinc 43.75)&
Lead 4.25% Iron 0.33%
Assay of Tails Zino 3.30%
Extraction Weight of Concentrate 56 gm. Extraction 51. 905'~ -35-
Charge
Ore 800 gm. Wa.ter 5600 gm. Rea.gents used O.49#/Ton Oreosote Oil. Time of Agitation o hr.' 45 min.
Results Assay of Concentrate Zinc 44.80% Lead 5.25% Iron 0.38%
Assay of Tails Zinc
Extraction Weight of Conaentrate 78 gm. Extraction 73.90% -36-
E)[PERIKENT No. 31.
Charge
Ore 800 gm.
Yiater 5600 gm. Reagents used 0.45#/Ton Creosote Oil. a.18#/Ton No. 17 Flot. Oil. O.607:f jTon Sodium Sulphite. Time of agitation a hr. 45 min.
Results Assay of Concentrates Zinc 50.16% Lead 5.40%
17401 Iron a .0 /0 Assay o:f Tails Zinc
Extraction Weight o:f Conoentrate 70 gm. Extraction 74.50% -3'1-
EXPERIMENT No 32.
Charge
Ore 800 gm.
Water 5600 gIn. Reagents used O.42#/Ton No. 17 Flot. Oil. O.60#/Ton Sodium Sulphide. Time of Agitation o hr. 45 min.
Results Assay of Conoentrates Zino 36.56% Lead 3.92% Iron 0.36%
Assay of Tails Zinc
Extraotion Weight of Conoentrate 68 gm. Extraation 52.60% -38-
EXPERINlENT No. 33.
Charge Ore 800 gm. Water 5600 gm. Reagents used O.20#/Ton No. 400 Crude Wood Creosote. O.20#/Ton No. 1580 Speo. Pine Oil. O.20#/Ton Refined Tar Oil. Time of Agitation o hr. 45 min.
Results Assay of Conoentrates Zinc 40.17%
Lead 5.85% Iron 0.37%
Assay o:f Tails Zinc 1.54%
Extraction Weight of Concentrate 90 gm. Extraction 76.54% -3 EXPER 11lIENT No. 34. Charge Ore 800 gm. Water 5400 gm. Reagents used O.. 50:/l=/Ton No. 400 Crude Wood Creosote. Time of Agitation 0 hr. 45 min. Results Assay o"f Concentrates Zinc 41.20% Lead 6.10% Iron 0.35% Assay of Tails Zino 2.14% Extraction Weight of Conoentrate 77 gm. Extra.otion 67.10% -40- EXPERIMENT No •.35. Charge Ore 800 gm. Water 5600 gm. Reagents used O.49#/Ton Creosote Oi1. O.25#/Ton No. 17 Pine 011. O.25#/Ton CdS04. Time of Agitation o hr. 45 min. Results Assay of Concentrates Zinc 26.85% Lead 3.10% Iron 0.35% Assay of Tails Zinc Extraction Weight of Concentrate 43.gm. Extraction 24.00% -41- EXPERINJENT :r:~o. 36. Charge Ore 800 gm. Water 5600 gm. Reagents used O.50#/Ton Creosote Oil. 4.50#/Ton H2S04. Time of Agitation 1 hr. 00 min. Results Assay of Concentrates Zinc 26.60% Lea.d 3.20% Iron 0.24% Assay of Tails Zinc 4.87% Extraction Weight of Conoentrate 39 gm. Extraction 22.00% -42- EXPERIMENT No. 37. Charge Ore 800 gm. Water 5600 gm. Reagents used 0.40#/Ton Creosote Oil. O.20#/Ton No. 17 Pine Oil. O.25#/Ton CdS04 . O.50#/Ton Sodium Sulphide. Time o~ Agitation 1 hr. 00 min. Results Assay of Concentrates Zino 46.40% Lead 5.1~ Iron 0.35% Assay o:f Tails Zinc Extraction Weight of Concentrate 84 gm. Extraction 81.50% -43- EXPERIIJENT No. ~.a .• Charge Ore 800 gm. Water 5600 gm. Reagents used o.401/Ton Creosote Oil. O.20#/Ton No. 17 Pine Oil. o. 25~;:/Ton CdS04• Time of Agitation 1 hr. 00 min. Results Assay of Concentrates Zinc 32.00% Lead 2.50% Iron 0.31% Assay .2! Tails Zinc 4.00% Extraction Weight of Concentrate 57 gm. Extraetion 38.00% -44- EXPERIMENT No. 39. Cha.rge Ore 800 gIn. Water 5600 gm. Reagents used O.45#/Ton No. 6 Pine Oil. 0.25#/Ton CdS04 • Time of Agitation 1 hr. 00 min. Results Assay of Concentrates Zinc 37.10% Lead 1.85% Iron 0.34% Assay of' Tails Zinc Extraction Weight of' Concentrate 38 gm. Extraction 29.80% -45- EXPERIMEnT No. 40. I Charge Ore 800 gm. Water 5600 gm. ::teagents used O.75#/Ton Sodium Resinate. Time of Agitation o hr. 45 min. Results Assay o~ Conoentrates Zino 42.600/0 Lead 5.2076 Iron' 0.38% Assay of Tails Zinc 1.25% Extraction Weight of Concentrate 90 gm. Extraction 81.20% 'COMPARATIVE RESULTS. CatlowMQchil1e soo gm O... e. 5bOO '3tn.W.Cltev. !X~---OI5~~'1~~~~~I~fNI~.-,;,E,c,~.'~.S,~,·.~·,!~l f-. TO~1lOre · Ore.· 9YQt'f\s:i:,~_~+.~eqJI It'otl. Z,nc i_~ 17 rlotQt.on 1.50i 80 't5.bo I 1.30 I .~'I-1.50 77.bO I ~ ~ IJ 1 .. +7 I q 2. 4-b . 00' 5'. 9 b • 2.6 I gO q 0 I 00 II I ' 3 8 1.. 1.5<8I g <3 't t • i 0 b ....., , 3 ~ I ,5 8 I ryI b 0 , 't 1580 i Spec,. -PIne I ,bo j 9 ~ 3h.51 5.00 • 32 ,~lt71. 60 I 5 15 I " ROOltl'l ,42. i I 75 3'1,56 5,'0 , ~b 2,43 b'J,DO 1 , I I b 17 rJotc,r,'on :.50 Turpsj,20 ~O 't'3,70 b,to .-:57 1.70 74-,60,1 '7 200 ' I' • 48 1 I +0 o'J.io 5,100, .47 4.12 33.7D I 8 75 eJ.wJ~'vr(Js.481 j' 100 4-0,30 7,5"0 ,09 JtJo 6'.30 'I "/-0 D '. "6eo;;at. . 5 0 I 7 6 ~7, I Q 5,8 D , 3 Ii :2 , b g \)9. DO. 10 I Spec, cJ, "fine.. .. 58 I 8 b '34.20 5,60 . ~C 2,60 62,"30, II b -Pi t"1,e 6 i' .47 I f.=;IzS Ott 't.Go ell S0Lt 1.20 5"0 1+.40 2,10 ) 53 6.37 , 5,2b ' I~ 4 Flot~tjon.bo I is 43,10 b.40 .34- ) .4\S 7',?,go 13 I IJ .48 No2."Fiot. ~:~ ~q 15,70 6,QD . 2~ . efl ~b,5'o 14 C q 10J "13 'I .5~ 77 25.20 3.20 .673 I %Jt- tt-I.2.0 , 15 :2c> TJD-tatJ'e>n .Go I R2 '34.10 4.00 ,6;Z 2,h' 5q.~o, I b '/fO ec/ We/.Turps .47 I I 75 H.70 1",/5 .35' I, g7 '7/,20 17 5b creosote.(2bZ) ..ho I q3 £f5.DO 0,190 .:2J • 73 ~~,qo )16 17floTat,on ,5"0 ~NO'3i 24- kND31\ b 52. so.()O ~,IB .4D 4,.25" 3"3"ID Ili I ? , 4h Na H5 DJ 5 ! 10() 4 ~.5'0 6~ 70 I hh 2 I 5'"3 b I, ? ~, ~:t717 ,___ ,4b . __,~() ~_o~_I.__~ H~S6'1-13,+ '3 0 2 b ,100 I.'ib . 100 »,q 5 I b.qO lExPTr OfL USEO I RER-GENTS USEO--f-CONCENT-RA-TES-, T;i-L~Sl,E:X-T-- I NO : NO I N~n'lc2.r/'fon kin~r/1ot'l! Kind l""'l{on wt. Ipe,Y.ce.nt lper-c.et7t FeYc;e.r)T ~yc.et1tIpe,..cett"t I lOre.. I . Ore. : Oye qra m s. ,2, nc.. Le~d. rYon 2 ...... I 4- ~ 21 10;- r~It)-tat;-~~-;.50~! - -1- - -- 4-S~- : -3b.OO : 2,1-~---- ,37 - . 2.52- "3~"O I . 22 5(, i e.t~o50Te..;.4'3 ! '00 47.10; biOS ..... 0 I. to '13.60 I'I , ' '23 b I P. he. () j' .,45 ,I ,eu 50'1- i 2. 5" i 7 0 , 1 t q 0; t. q 0 • '35" 4. ,5 2 ~•b 0 24 I 17 ;-rlbiqt,t>t1 "bO ,1uyps ',CZO 'cuSo. Iit-.S ! 5 b 1 e.t'e c>s ofe ! 4tJ ' ; I II , b "3 CJ.44- 1 2 , II b • '3 b 2 . <68 6 5', ~0 25 I I' i ~ I I ' 2b 5b I~reosote.-,,4l3 'NQH-0Dlf'~'~; too 2.b.5S; ~.to ."3GJ 2,Q4 6"b.5'o 21 I Sb I ~reo~otei .4CJ i .' ! I tb..-.}4, 24 4. gO t 6/ 2. .5-0 !> t,00 E~ . 1 51, ~r~osole ' : '7E ,I !. _ i i ~, 4,.'2 0 'h:=-O ,Ltl Z'.4b .". bl) I 2'} I 6 b I e, reo.s of-e . ,4" ,AI ( O~)3 i 3, S I I 5 b 4 ~,7 S' 4-, .2~• 6 5 ~, "3 0 5" , , q 0 I 30 ISb I erE'osoie. ,4'! I" I! 78 44. '30 5.25 ,38 1 .70 73. if 0 31 I 5b ereo5o-te ,45! '71101 . "g IN"2 S i ,&'O 76 50, II:, 5.40 ,~4I. bb 74.50 I , 32 ! 11 FI"tctt,'.n ;42.. i Nt'!~ s : . btl I i I b gjb.Sb -j,q2 • 3 b 3. 04 ..52. bb 1 3"3 t 'HO ed. WJ.ereDsot~ •'2011530 tine; .ZlJ 1l\:;,·l"r·i.~o .1 ~() :14 140~1.~J'W4. e(eDsJ~1,5D. " I .! 17 -41.'0 to,I lJ f 35' 2.'4 "7" 0 ·1 _ 3,5-, 'I· sb ! e,eo5ote. : .4<1. 17 P,he .':)5 I C'd50.,.1. 25 I 43 ~Io.~5j ,I<) , :,S" ... .7 b :24.b 0 I ""6b 5b! ereosoYe ; ,So f-1)~0't'Jt,6' I 3'1 ~10,100 5,20 . Z4 4-.87 ~~tto I ' ; I • ! I 'tOY 9 1.5 I) ! "'3, 5b I' erDO"" ot" I ,40 17 PI~e .. 20 IC4S0,r1l.t,s!.75 g 4 4 b.4/J 5.1 fJ ,1 • ~s 4.00 jg,b'{) , .. '38 5b, eY«.bs ..te II ,4ll I,' " P. tle, ~0 11 ed S 0't i ,'2S 57 6 ~t tro '£ ,5D ) 5 , '+.51 '2'1.'60 I ! . "3'1 b j p"ne od .45! L:'dS0 use of sulphuric acid will 'be found in Expt. no. 36~ (2) That the addition of Copper Sulphate lowers the extraction. The explanation for this is the same as that of sulphuric acid, namely, the formation of Cadmium Sulphate. The results of the addition of Copper Sulphate will be found in Expt. No. 23 - 24. In experiments No. 11 - 20 we tried the combination of sulphuric acid and Copper Sulphate with the same poor results. -47- (3) That the-presence of Cadmium Sulphate lowers the extraction. The supposition that Cadmit~ Sulphate 1s de trimental to the flotation of zinc was suggested to us by Mr. M. T. Thornberry, who has found its presence in a flotation oharge to be the cause of poor results. Such a small amount as O.25#/Ton of this salt caused a very poor concentrate and extraction. The frothing 011s that we found best in all our experimental work were used with the Cadmium Su~phate in order to makesure that it was the presence of the salt that caused the poor re sults. The reason that the presence of this salt causes the ore not to float, we do not know, but whenever it is present, poor results are obtained, as found in Expt. No. 35-3B-39. (4) That th,e Callow pneumatic machine gave the best results. The ae;itation being so violent in the Mineral Separation macbine, and the ore being so fine, much gangue was carried in the concentrates. We then tried the Gallow machine. With the more easily regulated machine the agitation is much less violent and better results were obtained. (5) That the beat results were obtained with Creosote Oil and Pine Oil. Results to be found in Expt. No. ~-1~ 17-22-30-31. -48- (6) That the addition of Sodium Sulphide increases the extraction. We do not know just why this is the case, but experiments show that a very good ooncentrate and extraction was obtained by its addition to the oharge, as can be seen in Expt. No. 31. Now, in Expt. No. 37 Cadmium Sulphate and Sodium Sul~hide were added in the charge with the usual good frothing oils. A high extraotion and good oonoentrate were obts.ined, due, we think, to the Sodium Sulphide reaoting with the Cadmium Sulphate, forming Carumium Sulphide. The addition of Cadmium Sulphate, as will be remembered, always gave poor results, but in this oase it had no eIfect. (7) That warm water used in the oharge did not have much effeot on the grade of concentrate made. (8) That the fineness of the ore lowered the grade of concentrate. This was probably due to the gangue forming a semi-suspensoid and coming down in the concentrate. We tried to remedy this condition by adding Aluminum Hydroxide, but the air agitation overoame the settl ing properties of the hydroxide and did not better results aa noted in Expt. No. 29.