GB2106804A - Process for the beneficiation of metal sulfides and collector combinations therefor - Google Patents
Process for the beneficiation of metal sulfides and collector combinations therefor Download PDFInfo
- Publication number
- GB2106804A GB2106804A GB08224143A GB8224143A GB2106804A GB 2106804 A GB2106804 A GB 2106804A GB 08224143 A GB08224143 A GB 08224143A GB 8224143 A GB8224143 A GB 8224143A GB 2106804 A GB2106804 A GB 2106804A
- Authority
- GB
- United Kingdom
- Prior art keywords
- collector
- metal
- ore
- allyl
- carbon atoms
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Withdrawn
Links
- 229910052976 metal sulfide Inorganic materials 0.000 title claims abstract description 11
- 238000000034 method Methods 0.000 title claims description 31
- 229910052751 metal Inorganic materials 0.000 claims abstract description 19
- 239000002184 metal Substances 0.000 claims abstract description 19
- 238000009291 froth flotation Methods 0.000 claims abstract description 10
- 238000005188 flotation Methods 0.000 claims description 12
- 125000000217 alkyl group Chemical group 0.000 claims description 11
- 150000001875 compounds Chemical class 0.000 claims description 8
- 239000002245 particle Substances 0.000 claims description 8
- 125000004432 carbon atom Chemical group C* 0.000 claims description 7
- 239000000203 mixture Substances 0.000 claims description 7
- 229910052783 alkali metal Inorganic materials 0.000 claims description 6
- 150000001340 alkali metals Chemical class 0.000 claims description 6
- 239000002002 slurry Substances 0.000 claims description 6
- 125000004123 n-propyl group Chemical group [H]C([H])([H])C([H])([H])C([H])([H])* 0.000 claims description 5
- 125000000959 isobutyl group Chemical group [H]C([H])([H])C([H])(C([H])([H])[H])C([H])([H])* 0.000 claims description 4
- QGZKDVFQNNGYKY-UHFFFAOYSA-O Ammonium Chemical compound [NH4+] QGZKDVFQNNGYKY-UHFFFAOYSA-O 0.000 claims description 3
- 150000003863 ammonium salts Chemical class 0.000 claims description 3
- 239000012736 aqueous medium Substances 0.000 claims description 2
- 230000003750 conditioning effect Effects 0.000 claims description 2
- 150000003839 salts Chemical class 0.000 abstract description 3
- 238000011084 recovery Methods 0.000 description 13
- 239000003795 chemical substances by application Substances 0.000 description 7
- 229910052500 inorganic mineral Inorganic materials 0.000 description 6
- 239000011707 mineral Substances 0.000 description 6
- 239000012141 concentrate Substances 0.000 description 5
- 235000008504 concentrate Nutrition 0.000 description 5
- 229910052802 copper Inorganic materials 0.000 description 5
- 239000010949 copper Substances 0.000 description 5
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 4
- 238000003556 assay Methods 0.000 description 3
- 125000001495 ethyl group Chemical group [H]C([H])([H])C([H])([H])* 0.000 description 3
- 125000001449 isopropyl group Chemical group [H]C([H])([H])C([H])(*)C([H])([H])[H] 0.000 description 3
- 125000002496 methyl group Chemical group [H]C([H])([H])* 0.000 description 3
- 238000012360 testing method Methods 0.000 description 3
- WVYWICLMDOOCFB-UHFFFAOYSA-N 4-methyl-2-pentanol Chemical compound CC(C)CC(C)O WVYWICLMDOOCFB-UHFFFAOYSA-N 0.000 description 2
- UCKMPCXJQFINFW-UHFFFAOYSA-N Sulphide Chemical compound [S-2] UCKMPCXJQFINFW-UHFFFAOYSA-N 0.000 description 2
- 229910052948 bornite Inorganic materials 0.000 description 2
- 229910052947 chalcocite Inorganic materials 0.000 description 2
- 239000003153 chemical reaction reagent Substances 0.000 description 2
- 239000011248 coating agent Substances 0.000 description 2
- 238000000576 coating method Methods 0.000 description 2
- 230000000052 comparative effect Effects 0.000 description 2
- 230000001143 conditioned effect Effects 0.000 description 2
- 229910052960 marcasite Inorganic materials 0.000 description 2
- 239000010743 number 2 fuel oil Substances 0.000 description 2
- NIFIFKQPDTWWGU-UHFFFAOYSA-N pyrite Chemical compound [Fe+2].[S-][S-] NIFIFKQPDTWWGU-UHFFFAOYSA-N 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 229910052951 chalcopyrite Inorganic materials 0.000 description 1
- DVRDHUBQLOKMHZ-UHFFFAOYSA-N chalcopyrite Chemical compound [S-2].[S-2].[Fe+2].[Cu+2] DVRDHUBQLOKMHZ-UHFFFAOYSA-N 0.000 description 1
- BWFPGXWASODCHM-UHFFFAOYSA-N copper monosulfide Chemical compound [Cu]=S BWFPGXWASODCHM-UHFFFAOYSA-N 0.000 description 1
- 239000006260 foam Substances 0.000 description 1
- 239000000295 fuel oil Substances 0.000 description 1
- 230000002209 hydrophobic effect Effects 0.000 description 1
- 239000004615 ingredient Substances 0.000 description 1
- XCAUINMIESBTBL-UHFFFAOYSA-N lead(ii) sulfide Chemical compound [Pb]=S XCAUINMIESBTBL-UHFFFAOYSA-N 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 150000002739 metals Chemical class 0.000 description 1
- 238000005065 mining Methods 0.000 description 1
- CWQXQMHSOZUFJS-UHFFFAOYSA-N molybdenum disulfide Chemical compound S=[Mo]=S CWQXQMHSOZUFJS-UHFFFAOYSA-N 0.000 description 1
- ZRPRNLNEYWYWLO-UHFFFAOYSA-N o-ethyl n-prop-2-enylcarbamothioate Chemical compound CCOC(=S)NCC=C ZRPRNLNEYWYWLO-UHFFFAOYSA-N 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- FOYPFIDVYRCZKA-UHFFFAOYSA-M sodium;bis(2-methylpropoxy)-sulfanylidene-sulfido-$l^{5}-phosphane Chemical compound [Na+].CC(C)COP([S-])(=S)OCC(C)C FOYPFIDVYRCZKA-UHFFFAOYSA-M 0.000 description 1
- 238000001179 sorption measurement Methods 0.000 description 1
- QXKXDIKCIPXUPL-UHFFFAOYSA-N sulfanylidenemercury Chemical compound [Hg]=S QXKXDIKCIPXUPL-UHFFFAOYSA-N 0.000 description 1
- WGPCGCOKHWGKJJ-UHFFFAOYSA-N sulfanylidenezinc Chemical compound [Zn]=S WGPCGCOKHWGKJJ-UHFFFAOYSA-N 0.000 description 1
- 239000004094 surface-active agent Substances 0.000 description 1
- RYYWUUFWQRZTIU-UHFFFAOYSA-K thiophosphate Chemical compound [O-]P([O-])([O-])=S RYYWUUFWQRZTIU-UHFFFAOYSA-K 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B03—SEPARATION OF SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS; MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
- B03D—FLOTATION; DIFFERENTIAL SEDIMENTATION
- B03D1/00—Flotation
- B03D1/02—Froth-flotation processes
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B03—SEPARATION OF SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS; MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
- B03D—FLOTATION; DIFFERENTIAL SEDIMENTATION
- B03D1/00—Flotation
- B03D1/001—Flotation agents
- B03D1/004—Organic compounds
- B03D1/012—Organic compounds containing sulfur
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B03—SEPARATION OF SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS; MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
- B03D—FLOTATION; DIFFERENTIAL SEDIMENTATION
- B03D1/00—Flotation
- B03D1/001—Flotation agents
- B03D1/004—Organic compounds
- B03D1/014—Organic compounds containing phosphorus
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B03—SEPARATION OF SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS; MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
- B03D—FLOTATION; DIFFERENTIAL SEDIMENTATION
- B03D2201/00—Specified effects produced by the flotation agents
- B03D2201/02—Collectors
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B03—SEPARATION OF SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS; MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
- B03D—FLOTATION; DIFFERENTIAL SEDIMENTATION
- B03D2203/00—Specified materials treated by the flotation agents; Specified applications
- B03D2203/02—Ores
Landscapes
- Manufacture And Refinement Of Metals (AREA)
- Solid-Sorbent Or Filter-Aiding Compositions (AREA)
Abstract
N-allyl-O-alkyl thionocarbamates, alone or in combination with salts of dialkyl dithiophosphates, are used as metal collectors in the froth flotation of metal sulfides.
Description
SPECIFICATION
Process for the henefication of metal sulfides and collector combinations therefor
This invention relates to a process for the beneficiation of metal sulfide ores. More particularly, this process relates to such a process wherein froth flotation is employed in conjunction with a metal collector comprising an N-allyl-O-alkyl thionocarbamate.
Many important metals occur in nature in the form of sulfide ores. Such ores occur in various locations in the world and in many locations, the ore deposits are of sufficient size to recover by mining operations, after which various procedures are employed to recover the metal values.
Froth flotation is the principal means of concentration, or beneficiation, of a number of valuable mineral ores. Its chief advantage is that it is a relatively efficient operation at a substantially lower cost than many other processes.
Flotation is a process for separating finely ground valuable minerals from their associated gaugue, or waste, or for separating valuable components one from the other. In froth flotation, frothing occurs by introducing air into a pulp of finely divided ore and water containing a frothing agent. Minerals that have a special affinity for air bubbles rise to the surface in the froth and are separated from those wetted by the water. The particles to be separated by froth flotation must be of a size that can be readily levitated by the air bubbles.
Agents called collectors are used in conjunction with flotation to promote recovery of the desired mineral.
The agents chosen must be capable of selectively coating the desired material in spite of the presence of many other mineral species. Current theory states that the flotation separation of one mineral species from another depends upon the relative wettability of surfaces. Typically, the surface free energy is purportedly lowered by the adsorption of heteropolar surface-active agents. The hydrophobic coating thus provided acts in this explanation as a bridge so that the particle may be attached to an air bubble. The process of this invention is not limited by this or other theories of flotation.
Many metal sulfide ores are beneficiated by froth flotation using a variety of collectors. Such sulfide ores include, for example, marcasite (FeS2), chalopyrite (CuFeS2), chalcocite (Cu2S), galena (PbS), sphalerite (ZnS), molybdenite (MoS2), cinnabar (HgS), covellite (CuS), bornite (Cu5FeS4), and the like, as well as mixed ores.
Although these and other ores may be effectively processed to provide concentrates of increased metal content, there nevertheless exists the need for more effective collectors which will provide increased recovery of metal values while still providing high grade recovery. In view of the high quantities of metal sulfides processed by froth flotation, such a development can result in a substantial increase in the total amount of metal values recovered and provide substantial economic advantages even when a modest increase in recovery is provided. Accordingly, the provision for an improved processforfroth flotation of metal sulfides would fulfill a long-felt need and constitute a notable advance in the art.
In accordance with the present invention, there is provided a process for beneficiating a metal sulfide ore which comprises grinding said ore to provide particles of flotation size, slurrying said particles in aqueous medium, conditioning said slurry with effective amounts of frothing agent and a metal collector comprising a compound of the structure
wherein R is an alkyl group of 1 to 6 carbon atoms, and floating the desired ore values by froth flotation.
Surprisingly, the process of the present invention provides metal concentrates of improved grade and recovery over those obtained when the process is conducted using closely related prior art collectors. The improved grade and recovery lead to the obtention of more valuable metal as a result of the present process and provide significant economic advantages thereby.
In carrying out the process of the present invention, a metal sulfide ore selected for processing is ground to provide particles of flotation size. Generally, the particle size of the grind will be such that the major portion of the particles are less than 200 mesh (U.S. screen size).
The ground ore generally is prepared as an aqueous slurry containing from about 50 to 75 weight percent ground ore based on the total slurry weight, preferably about 65-70 weight percent, same basis. The slurry thus obtained is conditioned with frother and collector in effective amounts. Fuel oil and other foam suppressors may also be used to control froth formation as desired.
The conditioned slurry is then subjected to conventional froth flotation and the metal values recovered with the froth. The flotation may be conducted in one or more stages, if desired, with addition of more frother in subsequent stages, as desired.
The collector compounds of the present invention have the general structure
wherein R is an alkyl group of 1 to 6 carbon atoms. Compounds of this structure include N-allyl-O-methyl thiono-carbamate, N-allyl-O-ethyl thionocarbamate, N-allyl-O-isopropyl thionocarbamate, N-allyl-O-npropyl thionocarbamate, N-allyl-O-isobutyl thionocarbamate, and N-allyl-O-n-amyl thionocarbamate, and the like.
The collector compound is used in the process of the present invention in an effective amount. By "an effective amount" is meant an amount which provides a desirable level of beneficiation of the desired metal values. The specific values of collector used with different metal sulfide ores may vary widely. Generally the effective collector usage level will be at a value of about 0.001 to about 0.1 pound, preferably 0.005 to 0.05 pound of collector per ton of ore.
The frothing agent will also be used at effective levels as in conventional procedures. Generally, frother usage will be at a level of about 0.01 to 0.1 pounds per ton of ore. Suitable frothing agents are well known in the art and include, for example, methyl isobutyl carbinol, 6-to 8-carbon alcohols, and the like.
The process of the present invention may employ as the metal collector certain combinations of the
N-allyl-O-alkyl thionocarbamates and other compounds provided such combinations do not impair the performance of the specified thionocarbamates. For example, combinations of an alkali metal or ammonium salt of a dialkyl dithiophosphate of the formula
wherein M is an alkali metal or ammonium ion and R' and R" are individually selected from alkyl groups of 2 to 8 carbon atoms, and certain of the N-allyl-O-alkyl thionocarbamates are found to provide excellent performance as metal collectors in conjunction with the process ofthe present invention.
The invention is more fully illustrated in the examples which follow wherein all parts and percentages are by weight unless otherwise specified.
In the examples which follow, the following general procedure was followed.
General procedure
1. A 16.5 minute grind (67.5% - 200 mesh) was performed with 0.020 pound per ton of collector and 0.029 pound perton of No. 2fuel oil.
2. Two rougher flotation stages of 3 and 5 minutes respectively were conducted at the natural pH of the ground pump -- pH 8.5 to 8.6. Methyl isobutyl carbinol was used as frothing agent at a standardized dosage of 0.028 pounds per ton to the first rougher and 0.014 pounds per ton to the second rougher flotations.
3. All products were collected individually and subjected to assay.
All flotation tests were run in duplicate in random order by the same operator. The average metallurgical results of the duplicate tests are reported.
Example 1
Following the general procedure, N-allyl-O-isobutyl thionocarbamate was evaluated using Gasps copper ore (primarily chalcocite) at three levels of usage. Results are given in Table
Comparative Example A
The procedure of Example 1 was used except the collector employed was N-isopropyl-O-ethyl carbamate, a prior art collector. Results are also given in Table I.
TABLE I
Example 1 Comparative A
Reagent concentrations, Ibs.lton
Collector 0.020 0.014 0.008 0.020 0.014 0.008
No. 2 Fuel Oil 0.029 0.029 0.029 0.029 0.029 0.029
Frother 0.043 0.043 0.050 0.043 0.043 0.050
Weight Recovery (O/oJ First Rougher 2.98 2.45 1.98 2.37 2.25 2.03
Second Rougher 1.62 1.44 1.36 1.38 1.41 1.62
Combined Con
centrate 4.60 3.89 3.34 3.75 3.66 3.65
Tails 95.40 96.11 96.66 96.25 96.34 96.35 Assay - % Copper
Feed 0.427 0.408 0.406 0.417 0.421 0.419
First Rougher 13.06 14.67 17.05 15.43 16.04 17.15
Second Rougher 0.768 0.895 1.808 0.964 1.291 1.424
Combined Con
centrate 8.73 9.59 10.82 10.10 10.36 10.16
Tails 0.028 0.037 0.047 0.041 0.044 0.050 Recovery - % Copper
First Rougher 90.00 88.17 82.73 87.48 85.62 82.97
Second Rougher 2.90 3.11 6.08 3.19 4.31 5.55
Combined Con
centrate 93.8 91.2 88.8 90.6 89.9 88.5
The results given in Table I indicate that the process of the present invention provides higher copper recoveries than does the prior art process while still providing high grades.
Example 2
The general procedure was again followed except that a series of N-allyl-O-alkyl thionocarbamates were evaluated alone or in certain combinations with sodium diisobutyl dithiophosphate. Since each of the dithionocarbamates shows different solubility in the dithiophosphate reagent, testing of the mixtures was at different levels of ingredients. Results are given in Table II.
TABLE II
Product Weight Percent
N-allyl-O-alkyl Thionocarbamate & First Second
Example Thionocarbamate Thiophosphate Rougher Rougher Comb.
No. Alkyl Derivative % Conc. Conc. Conc.
2 methyl 100%thiono 1.75 1.25 3.00
3 methyl 30% thiono 70% phos. 2.38 1.36 3.74
4 ethyl 100% thiono 2.19 1.12 3.31
5 ethyl 30% thiono 70% phos. 2.53 1.42 3.95
6 isopropyl 100% thiono 2.86 1.49 4.35
7 isopropyl 20% thiono 80% phos. 2.53 1.47 4.00
8 n-propyl 100%thiono 1.72 1.17 2.89
9 n-propyl 30%thiono70%phos. 2.40 1.13 3.53
10 iso-butyl 100%thiono 3.21 1.52 4.73
11 iso-butyl 15% thiono 85% phos. 2.61 1.40 4.01
12 n-amyl 100%thiono 2.82 1.56 4.38
13 n-amyl 15%thiono85%phos. 2.71 0.94 3.65
Assay % Cu Recovery %
Example #1 #2 Comb. #1 #2 Comb.
No. Feed Conc. Conc. Conc. Tail Conc. Conc. Conc.
2 0.401 17.69 2.061 11.14 0.069 76.86 6.43 83.29
3 0.382 14.05 1.386 9.45 0.031 87.34 4.88 92.22
4 0.396 15.72 1.411 10.88 0.037 86.94 4.02 90.96
5 0.386 13.27 1.241 8.96 0.035 86.93 4.54 91.47
6 0.390 12.22 0.794 8.31 0.031 89.39 3.01 92.40
7 0.400 13.57 1.222 9.03 0.041 85.78 4.50 90.28
8 0.394 18.81 1.833 11.96 0.050 82.29 5.36 87.58
9 0.386 13.89 2.035 10.11 0.031 86.38 5.90 92.28
10 0.391 11.21 0.712 7.82 0.022 91.99 2.77 94.76
11 0.405 13.53 1.228 9.23 0.037 86.99 4.24 91.23
12 0.384 12.52 0.894 8.37 0.018 91.85 3.67 95.52
13 0.392 12.87 1.701 10.05 0.031 88.75 3.58 92.33
The results given in Table II show that, in general, N-allyl-O-alkyl thionocarbamates when used alone provide increases in recovery with increases in alkyl chain length. The results also show that increased recovery values with mixtures of N-allyl-O-alkyl thionocarbamates and dialkydithiophosphate salt when methyl, ethyl, and n-propyl derivatives of the thionocarbamates are employed. Other alkyl allylthionocarba -ffiates in combination with dialkyldithiophosphate salt provide higher recovery than do the lower alkyl 'lyithionocarbamates used alone.
Claims (10)
1. A process for beneficiating a metal sulfide ore which comprises grinding said ore to provide particles of flotation size, slurrying said ore in aqueous medium, conditioning said slurry with effective amounts of a metal collector comprising a compound of the structure
wherein R is an alkyl group of 1 to 6 carbon atoms, and floating the desired ore values by froth flotation.
2. The process of Claim 1 wherein said metal collector is used at a level of about 0.005 to 0.05 pounds per ton of ore.
3. The process of Claim 1 wherein said metal collector is N-allyl-O-isobutyl thionocarbamate.
4. The process of Claim 1 wherein said metal collector is used in conjunction with an alkali metal or ammonium salt of a compound of the structure
wherein M is an alkali metal or ammonium ion and R' and R" are individually selected from alkyl groups of 2 to 8 carbon atoms.
5. The process of Claim 4wherein said metal collector is N-allyl-O-n-propyl thionocarbamate.
6. The process of Claim 4 wherein said R' and Rare isobutyl.
7. A collector composition comprising a mixture of 4-allyl-O-alkyl carbamate of the structure
wherein R is an alkyl group of 1 to 6 carbon atoms and an alkali metal or ammonium salt of a compound of the structure
wherein M is an alkali metal or ammonium ion and R' and R" are individually selected from alkyl groups of 2 to 8 carbon atoms.
8. The collector composition of Claim 7 wherein said R' and R" are isobutyl.
9. The collector composition of Claim 7 wherein said R is n-propyl.
10. The collector composition of Claim 8 wherein R is n-propyl.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US30985181A | 1981-10-08 | 1981-10-08 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB2106804A true GB2106804A (en) | 1983-04-20 |
Family
ID=23199942
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB08224143A Withdrawn GB2106804A (en) | 1981-10-08 | 1982-08-23 | Process for the beneficiation of metal sulfides and collector combinations therefor |
Country Status (9)
| Country | Link |
|---|---|
| JP (1) | JPS5876153A (en) |
| DE (1) | DE3237231A1 (en) |
| ES (1) | ES8400149A1 (en) |
| GB (1) | GB2106804A (en) |
| IT (1) | IT1149096B (en) |
| NO (1) | NO823367L (en) |
| SE (1) | SE8205732L (en) |
| YU (1) | YU44364B (en) |
| ZA (1) | ZA827358B (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2182587A (en) * | 1985-11-05 | 1987-05-20 | British Petroleum Co Plc | Froth flotation of nickel sulphide minerals |
| US4699712A (en) * | 1984-06-20 | 1987-10-13 | Thiotech, Inc. | Ore dressing method |
| AU576872B2 (en) * | 1984-06-20 | 1988-09-08 | Thiotech, Inc. | Flotation process and collector |
| WO1991002097A1 (en) * | 1989-08-04 | 1991-02-21 | The Broken Hill Proprietary Company Limited | Ion flotation with non-ionic reagents |
| US5232581A (en) * | 1991-10-11 | 1993-08-03 | American Cyanamid Company | Recovery of platinum group metals and gold by synergistic reaction between allylalkyl thionocarbamates and dithiophosphates |
| US5599442A (en) * | 1996-06-14 | 1997-02-04 | Cytec Technology Corp. | Collector composition for flotation of activated sphalerite |
| CN108607678A (en) * | 2018-04-28 | 2018-10-02 | 西安鑫城投资有限公司 | A method of from separation molybdenum concntrate and lead concentrate in stone containing wulfenite |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2163068B (en) * | 1984-08-17 | 1988-09-28 | American Cyanamid Co | Neutral circuit sulfide collectors |
| CN113441286B (en) * | 2021-06-17 | 2022-07-29 | 南京银茂铅锌矿业有限公司 | Process method beneficial to improving recovery rate of lead and silver in lead concentrate |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3288782A (en) * | 1962-07-25 | 1966-11-29 | Monsanto Co | Unsaturated hydrocarbon esters of n, nu-disubstituted thionocarbamic acids |
| US3590999A (en) * | 1969-02-13 | 1971-07-06 | Dow Chemical Co | Flotation of sulfide ores |
| US3925218A (en) * | 1974-08-01 | 1975-12-09 | American Cyanamid Co | Concentration of ore by flotation with solutions of aqueous dithiophosphates and thionocarbamate as collector |
| JPS526688A (en) * | 1975-06-24 | 1977-01-19 | Sumiyoshi Heavy Ind | Fish landing device to be used at quay |
-
1982
- 1982-08-23 GB GB08224143A patent/GB2106804A/en not_active Withdrawn
- 1982-09-22 YU YU2106/82A patent/YU44364B/en unknown
- 1982-10-05 IT IT49207/82A patent/IT1149096B/en active
- 1982-10-05 JP JP57174081A patent/JPS5876153A/en active Pending
- 1982-10-07 ES ES516314A patent/ES8400149A1/en not_active Expired
- 1982-10-07 NO NO823367A patent/NO823367L/en unknown
- 1982-10-07 DE DE19823237231 patent/DE3237231A1/en not_active Ceased
- 1982-10-07 ZA ZA827358A patent/ZA827358B/en unknown
- 1982-10-07 SE SE8205732A patent/SE8205732L/en not_active Application Discontinuation
Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4699712A (en) * | 1984-06-20 | 1987-10-13 | Thiotech, Inc. | Ore dressing method |
| AU576872B2 (en) * | 1984-06-20 | 1988-09-08 | Thiotech, Inc. | Flotation process and collector |
| GB2182587A (en) * | 1985-11-05 | 1987-05-20 | British Petroleum Co Plc | Froth flotation of nickel sulphide minerals |
| GB2182587B (en) * | 1985-11-05 | 1989-05-04 | British Petroleum Co Plc | Separation of nickel sulphide minerals |
| WO1991002097A1 (en) * | 1989-08-04 | 1991-02-21 | The Broken Hill Proprietary Company Limited | Ion flotation with non-ionic reagents |
| US5232581A (en) * | 1991-10-11 | 1993-08-03 | American Cyanamid Company | Recovery of platinum group metals and gold by synergistic reaction between allylalkyl thionocarbamates and dithiophosphates |
| TR26736A (en) * | 1991-10-11 | 1995-05-15 | American Cyanamid Co | METALS AND GOLD GAIN OF POWERFUL GROUP WITH SYNERGISTIC REACTION BETWEEN ALYALKALTIIONOCARBAMATE AND DITIOPHOSPHATES. |
| US5599442A (en) * | 1996-06-14 | 1997-02-04 | Cytec Technology Corp. | Collector composition for flotation of activated sphalerite |
| WO1997047391A1 (en) * | 1996-06-14 | 1997-12-18 | Cytec Technology Corp. | New collector composition for flotation of activated sphalerite |
| AU720122B2 (en) * | 1996-06-14 | 2000-05-25 | Cytec Technology Corp. | New collector composition for flotation of activated sphalerite |
| CN108607678A (en) * | 2018-04-28 | 2018-10-02 | 西安鑫城投资有限公司 | A method of from separation molybdenum concntrate and lead concentrate in stone containing wulfenite |
Also Published As
| Publication number | Publication date |
|---|---|
| IT8249207A0 (en) | 1982-10-05 |
| YU44364B (en) | 1990-06-30 |
| JPS5876153A (en) | 1983-05-09 |
| ES516314A0 (en) | 1983-10-16 |
| ZA827358B (en) | 1983-08-31 |
| IT1149096B (en) | 1986-12-03 |
| ES8400149A1 (en) | 1983-10-16 |
| SE8205732L (en) | 1983-04-09 |
| YU210682A (en) | 1985-03-20 |
| NO823367L (en) | 1983-04-11 |
| SE8205732D0 (en) | 1982-10-07 |
| DE3237231A1 (en) | 1983-04-28 |
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| WAP | Application withdrawn, taken to be withdrawn or refused ** after publication under section 16(1) |