US3925218A - Concentration of ore by flotation with solutions of aqueous dithiophosphates and thionocarbamate as collector - Google Patents

Concentration of ore by flotation with solutions of aqueous dithiophosphates and thionocarbamate as collector Download PDF

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US3925218A
US3925218A US493946A US49394674A US3925218A US 3925218 A US3925218 A US 3925218A US 493946 A US493946 A US 493946A US 49394674 A US49394674 A US 49394674A US 3925218 A US3925218 A US 3925218A
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United States
Prior art keywords
solution
thionocarbamate
aqueous
methylthionocarbamate
sodium
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Expired - Lifetime
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US493946A
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English (en)
Inventor
Donald Edwin Zipperian
James Allen Jones
Thomas Brian Buza
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Wyeth Holdings LLC
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American Cyanamid Co
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Publication date
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Priority to US493946A priority Critical patent/US3925218A/en
Priority to US05/584,685 priority patent/US4040950A/en
Priority to CA229,754A priority patent/CA1026019A/en
Priority to ZA00754004A priority patent/ZA754004B/xx
Priority to AU82496/75A priority patent/AU496188B2/en
Priority to PH17325A priority patent/PH11134A/en
Priority to GB29111/75A priority patent/GB1510845A/en
Priority to BG030506A priority patent/BG24790A3/xx
Priority to ZM90/75A priority patent/ZM9075A1/xx
Priority to TR18738A priority patent/TR18738A/xx
Priority to FI752067A priority patent/FI61642C/fi
Priority to BR7504840*A priority patent/BR7504840A/pt
Priority to DE19752534249 priority patent/DE2534249A1/de
Priority to JP50092655A priority patent/JPS5930467B2/ja
Priority to SE7508748A priority patent/SE415961B/xx
Priority to ES439926A priority patent/ES439926A1/es
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Publication of US3925218A publication Critical patent/US3925218A/en
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    • 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
    • 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
    • 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

Definitions

  • ABSTRACT 52 us. Cl. 4. 252/61; 209/166; 209/167 y O-alkylthionocarbamales are Soluble in 51 I (1 303 3 00; CQQK 3 00; 3223 1 00 centrated aqueous solutions of ammonium or alkali 53 Fie
  • d f Search 252 209 7 metal salts of dialkyldithiophosphates and the resulting mixed solution offers improved copper recovery [56] References Cited y froth flotation- UNITED STATES PATENTS 2,029,156 1/1936 Christmann el al 252/6l 8 Claims, 3 Drawing Figures s01aorx s00xum Dl/SOSUTYLD/TH/OPHOSPHATE 1PM r0- ISOPROP n M; m n m/o/voca RSAMA r:
  • Organic sulfur compounds are numerous and of highly varied structure. Such compounds have a variety of uses depending on their nature and properties. Typically, organic sulfur compounds are used in the manufacture of rayon and cellophane, as insecticides, as fungicides and as flotation agents in the concentration of minerals. Certain organic sulfur compounds are water soluble while others are not. The lack of water solubility in many cases interferes with extensive utilization of such organic sulfur compounds. In many applications, it is desirable to use mixtures of different types of sulfur compounds for increased efficiency. However, the incompatibility of different types of sulfur compounds and the lack of water solubility of specific sulfur compounds complicates efforts to use mixtures of different types of organic sulfur compounds. This generally necessitates separate additions of the difierent types of sulfur compounds to be employed and extensive processing to effect uniform admixture. In many instances, maximum performance of the mixture is not obtained because of the incompatibility of the different sulfur compounds.
  • Alkali metal or ammonium salts of dialkyl dithiophosphates are water soluble organic sulfur compounds that have been used for many years as flotation agents in the concentration of minerals.
  • N-alkyl, O-alkyl thionocarbamates are water insoluble oils that also have typical uses of organic sulfur compounds, such as flotation agents in the concentration of minerals. The dissimilar solubility characteristics of these different compound types do not suggest that these compounds could be employed as a single composition.
  • a stable aqueous solution comprising from about 35 to 50 weight percent of an alkali metal or ammonium salt of a dialkyldithiophosphate and, correspondingly, from about 65 to 50 weight percent of water, said solution containing dissolved the rein sufficient of an N-alkyl, O-alkyl thionocarbamate to provide a volume ratio in the range of from about 5:95 to 95:5 of said dialkyl dithiophosphate salt solution to said thionocarbamate, respectively.
  • N-alkyl, O-alkyl thionocarbamates in aqueous solutions of alkali metal or ammonium salts of dialkyldithiophosphates is highly unexpected for numerous reasons.
  • the N-alkyl, O-alkyl thionocarbamates are insoluble in aqueous solutions of alkali metal alkyl xanthantes.
  • the thiophosphates are insoluble in allyl amyl xanthate, a water insoluble oil similar in nature and application to the thionocarbamates.
  • Toluene an organic solvent, was found to be immiscible with the aqueous dithiophosphates in proportion in which the thionocarbamates are miscible.
  • the range of proportions at which the various thionocarbamates are miscible with the aqueous dithiophosphates varies with the individual compounds of both types.
  • an improvement in the process of recovering copper values from a copper-bearing ore by froth flotation which comprises using as collector for said copper values an aqueous solution comprising from about 35 to 50 weight percent of an alkali metal or ammonium salt of a dialkyl dithiophosphate and, correspondingly, from about 65 to 50 weight percent of water, said solution containing dissolved therein sufficient of an N alkyl O-alkyl thionocarbamate to provide a volume ratio in the range of about 5:95 to 95:5 of said dialkyl dithiophosphate salt solution to said thionocarbamate, respectively, said collector being used at from about 0.001 to about 0.1 pounds per ton of ore.
  • the alkali metal or ammonium salts of the dialkyl dithiophosphoric acids useful in the present invention have the general formula S R-O- E-O-R' 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 having straight or branched chains.
  • Typical compounds include sodium diethyldithiophosphate, sodium diisopropyldithiophosphate, sodium diisobutyldithiophosphate, sodium diisoamyldithiophosphate, 0,0-bis( l,3-dimethylbutyi)sodium phosphorodithioate and the corresponding compounds as the ammonium or potassium salts.
  • the acid may be called phosphorodithionic acid, the esters identified as 0,0-esters, and the salt indicated. All of the dithiophosphates contemplated for use in the present invention are water soluble.
  • the thionocarbonam ates useful in the present invention have the structure:
  • R" and R are individually selected from alkyl groups of about 1 to 6 carbon atoms having straight or branched chains.
  • Typical compounds include isopropyl methylthionocarbamate, isopropyl ethylthionocarbamate, isobutyl methylthionocarbamate and the like.
  • the first alkyl radical named in the nomenclature is attached to the oxygen atom and the second is attached to the nitrogen atom.
  • the alkylthionocarbamic acid is identified and the ester thereof is specified by the first alkyl radical named.
  • the compounds are sometimes called thioncarbamates but for euphony the thionocarbamate designation is preferred. All of the thiononcarbamates contemplated for use in the invention are water insoluble oils.
  • an aqueous solution of the dialkyldithiophosphate salt is prepared.
  • such salt will be prepared as about a 35 to weight percent aqueous solution, depending upon the solubility limit of the particular dialkyldithiophosphate salt employed. Solubility of the thionocarbamate is predicated on the dialkyldithiophosphate salt solution being concentrated, generally at least about 25 weight percent.
  • the oily, water insoluble, thionocarbamate is mixed with the concentrated aqueous dialkyldithiophosphate salt TABLE I 0.00l to about 01 pound of collector per ton of ore, preferably about 0.005 to about 0.05 pound per ton. Usage will vary depending upon the particular ore processed, the composition of the collector solution, and the processing equipment employed. Optimum usage can be readily determined by trial.
  • compositions of the present invention eliminate the need for separate additions of the two ingredients when co-use thereof is desirable, thus reducing the number of processing steps normally required for couse.
  • the compositions also provide the thionocarbamates in desirable form for addition, in aqueous solution form, a fonn previously not available.
  • the aqueous solution form is desirable in many applications where it is compatible in the process being performed and thus eliminates the problems associated with uniformly dispersing the normal oily, water insoluble, thionocarbamates.
  • the compositions of the invention provide improved performance over the separate use of either of specific ingredient alone or over the separate but simultaneous addition of both individual ingredients.
  • the compositions of the present invention eliminate processing steps and handling difficulties normally associated with uses of thionocarbamates, but also may provide improved performance in certain applications while eliminating such prior problems.
  • a particular application in which the solutions of the present invention show advantage is that of collector in concentrating valuable constituents from ores by flotation.
  • the mixed solution of thionocarbamate and dialkyldithiophosphate provides advantages in the flotation of metallic sulfides such as those of copper, zinc, lead, platinum, nickel and molybdenum ores.
  • the advantages include reduction in processing steps by use of the combined solution and may provide increased recovery of desired metal values while maintaining a high grade concentrate.
  • the collector is used in an amount which will provide best recovery of metal while maintaining a high grade of metal. Generally, this amount will vary from about lowing ingredients.
  • Example 1 2 3 4 5 6 Compound I 20 30 40 60 Compound 3 80 70 60 40 30 20
  • a stable solution resulted in which the thionocarbamate was completely dissolved.
  • Example l3 l4 l5 l6 l7 Compound 5
  • 30 40 60 70 80 Compound 1 70 60 40 30 20
  • Example l8 I9 20 21 22 -eontinucd Volume Ratio (25(1') Compound 6 3U 4U 6U 7U 80 ('tmipound 1 7
  • Compound 6 30 30 60 70 80 Compound 2 70 (all 40 30 20
  • Compound 7 30 40 60 70 80 Compound l 70 60 40 30 20
  • a stable solution resulted in which the thionocarbamatc was completely dissolved.
  • Example 37 38 Compound 5 7O 80 Compound 4 30 20
  • Example 39 40 Compound 7 70 30 Compound 4 30 20 in each example, a stable solution resulted in which the thionocarbamate was completely dissolved.
  • EXAMPLE 41 In this example a volume ratio (25C.) of 20/80 of compound 4 of the previous example and of compound 3 of Example l, respectively, was prepared. A stable solution resulted in which the thionoca rbamate was completely dissolved.
  • Xanthates Sodium ethyl xanthate 50% aqueous Sodium isobutyl xanthate 50% aqueous Potassium Amyl xanthate 50% aqueous Thionocarbamates isopropyl methylthionocarbamate lsopropyl ethylthionocarbamate Isobutyl methylthionocarbamate (All thionocarbamates were oils without diluents.)
  • COMPARATIVE EXAMPLE B COMPARATIVE EXAMPLE C
  • toluene was substituted for the xanthate employed in Comparative Example B.
  • FIG. 1 shows a comparison of performance of isopropyl methylthionocarbamate alone against the use of an equal total amount of isopropyl methylthionocarbamate and sodium diisobutyldithiophosphate at 50:50 ratio in the form of an aqueous solution of the present invention.
  • the optimum use level of isopropyl methylthionocarbamate alone is about 0.05 pounds per ton or ore and yields a maximum recovery of copper of about 82.5% while providing a grade of copper at or above 10%.
  • the solution of the invention has an optimum use level of about 0.043 lbs/ton while providing a maximum copper recovery of about 83.7% at a grade of copper at or above 10%.
  • FIG. 2 shows a comparison of performances of sodium diisobutyldithiophosphate alone against the same solution of the invention described in conjunction with FIG. 1.
  • the optimum use level of sodium diisobutyldithiophosphate alone is about 0.039 lbs/tons and yields a maximum recovery of copper of about 82% while providing a grade of copper at or above 10%. Results with the solution of the invention are as described in conjunction with FIG. 1.
  • FIG. 3 shows a comparison of performance of separate additions of sodium diisobutyldithiophosphate. as an aqueous solution, and of isopropyl methylthionocarbamate, as an oil without diluents, at a ratio of 50:50 of the two ingredients against the solution of the invention described in conjunction with FIG. I.
  • the optimum use level of the two ingredients added separately was about 0.032 lbs/tons and yields a maximum recovery of copper of about 80.9% while providing a grade of copper at or above 10%. Results with the solution of the invention are as described in conjunction with FIG. 1.
  • the solution of the invention provides a higher copper recovery at the minimum acceptable copper grade at lower ef-
  • the solution of the invention provides a higher copper recovery at the minimum copper grade acceptable. as shown in FIG. 2.
  • the solution of the present invention provides a higher copper recovery at the minimum copper grade acceptable as shown in FIG. 3.
  • EXAMPLE 46 A copper/molybdenum ore assaying 0.4% Cu and 0.04% Mo was crushed and ground with water to flotation size. This ore pulp was then charged to a laboratory flotation machine and adjusted to pH 10.8 with lime. The ore was then conditioned for 1 minute with a collector. A mixture of methyl isobutyl carbinol and 6- and 8-carbon alcohols in a total amount of 0.06 lbs. per ton of ore was used as frothing agent. Air was introduced and froth removed at a constant skimming rate over a period of 5 minutes. The rougher concentrate obtained was analyzed for copper and molybdenum and the weight percent of concentrate recovered was determined.
  • An aqueous solution comprising from about 35 to 50 weight percent of an alkali metal 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 correspondingly, from about 65 mate is isopropyl methylthionocarbamate.
  • dialkyldithiophosphate salt is sodium diisopropyldithiophosphate.
US493946A 1974-08-01 1974-08-01 Concentration of ore by flotation with solutions of aqueous dithiophosphates and thionocarbamate as collector Expired - Lifetime US3925218A (en)

Priority Applications (16)

Application Number Priority Date Filing Date Title
US493946A US3925218A (en) 1974-08-01 1974-08-01 Concentration of ore by flotation with solutions of aqueous dithiophosphates and thionocarbamate as collector
US05/584,685 US4040950A (en) 1974-08-01 1975-06-06 Concentration of ore by flotation with solutions of aqueous dithiophosphates and thionocarbamate as collector
CA229,754A CA1026019A (en) 1974-08-01 1975-06-20 Concentration of ore by flotation with solutions of aqueous dithiophosphates and thionocarbamate as collectors
ZA00754004A ZA754004B (en) 1974-08-01 1975-06-23 Concentration of ore by flotation
AU82496/75A AU496188B2 (en) 1974-08-01 1975-06-26 Concentration of ore by flotation
PH17325A PH11134A (en) 1974-08-01 1975-06-27 Concentration of ore by flotation with solutions of aqueous dithiophosphates and thionocarbamate as collector
BG030506A BG24790A3 (bg) 1974-08-01 1975-07-10 Средство за флотация
GB29111/75A GB1510845A (en) 1974-08-01 1975-07-10 Concentration of ore by flotation
ZM90/75A ZM9075A1 (en) 1974-08-01 1975-07-14 Concentration of ore by flotation
TR18738A TR18738A (tr) 1974-08-01 1975-07-17 Sulu ditofosfat karisimlari ve tionokarbamat'in kollektoer (toplayici) olarak kullanildigi cevherin flotasyon usulue ile konsantrasyonu
FI752067A FI61642C (fi) 1974-08-01 1975-07-17 Vattenloesning vilken aer laemplig saosom samlarloesning vid tillvaratagning av koppar fraon sulfidmalmer
BR7504840*A BR7504840A (pt) 1974-08-01 1975-07-29 Solucao aquosa e processo para a recuperacao do teor de cobre de um minerio contendo cobre,por flotacao por espuma
DE19752534249 DE2534249A1 (de) 1974-08-01 1975-07-31 Waessrige flotationsloesung
JP50092655A JPS5930467B2 (ja) 1974-08-01 1975-07-31 捕集剤組成物
SE7508748A SE415961B (sv) 1974-08-01 1975-08-01 Forfarande for flotation av kopparhaltig malm samt medel for genomforande av forfarandet
ES439926A ES439926A1 (es) 1974-08-01 1975-08-01 Procedimiento para la recuperacion del contenido en cobre deuna mena cuprifera.

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US493946A US3925218A (en) 1974-08-01 1974-08-01 Concentration of ore by flotation with solutions of aqueous dithiophosphates and thionocarbamate as collector

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JP (1) JPS5930467B2 (enrdf_load_stackoverflow)
BG (1) BG24790A3 (enrdf_load_stackoverflow)
BR (1) BR7504840A (enrdf_load_stackoverflow)
CA (1) CA1026019A (enrdf_load_stackoverflow)
DE (1) DE2534249A1 (enrdf_load_stackoverflow)
ES (1) ES439926A1 (enrdf_load_stackoverflow)
FI (1) FI61642C (enrdf_load_stackoverflow)
GB (1) GB1510845A (enrdf_load_stackoverflow)
PH (1) PH11134A (enrdf_load_stackoverflow)
SE (1) SE415961B (enrdf_load_stackoverflow)
TR (1) TR18738A (enrdf_load_stackoverflow)
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Cited By (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4530758A (en) * 1982-05-17 1985-07-23 Thiotech, Inc. Ore flotation method
US4618461A (en) * 1983-07-25 1986-10-21 The Dow Chemical Company O,O'-, O,S'- or S,S'-dithiodialkylene-bis(mono- or dihydrocarbyl carbamothioates) and S,S'-dithiodialkylene-bis(mono- or dihydrocarbyl carbamodithioates) and method of preparation thereof
US4689142A (en) * 1985-03-22 1987-08-25 Essex Industrial Chemicals, Inc. Alkyl mercaptans as collector additives in froth flotation
US4702822A (en) * 1985-07-12 1987-10-27 The Dow Chemical Company Novel collector composition for froth flotation
US4904374A (en) * 1987-10-08 1990-02-27 Sentrachem Limited Froth flotation
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
WO1997025149A1 (en) * 1996-01-11 1997-07-17 Allied Colloids Limited Process for recovering minerals and compositions for use in this
US9302272B2 (en) 2011-10-18 2016-04-05 Cytec Technology Corp. Froth flotation processes
US9302273B2 (en) 2011-10-18 2016-04-05 Cytec Technology Corp. Froth flotation processes
US9302274B2 (en) 2011-10-18 2016-04-05 Cytec Technology Corp. Collector compositions and methods of using the same
US20170165681A1 (en) * 2014-07-14 2017-06-15 Clariant International Ltd. Stable Aqueous Composition Of Neutral Collectors And Their Use In Mineral Beneficiation Processes
AU2013218789B2 (en) * 2012-02-06 2017-09-28 Teebee Holdings Pty Ltd Thionocarbamates and processes
US20200147619A1 (en) * 2017-05-24 2020-05-14 Basf Se Alkylated triphenyl phosphorothionates as selective metal sulphide collectors

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5821616Y2 (ja) * 1978-11-15 1983-05-09 ナショナル住宅産業株式会社 切断装置
GB2106804A (en) * 1981-10-08 1983-04-20 American Cyanamid Co Process for the beneficiation of metal sulfides and collector combinations therefor

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2029156A (en) * 1928-11-01 1936-01-28 American Cyanamid Co Oxide flotation
US2043192A (en) * 1934-05-09 1936-06-02 American Cyanamid Co Flotation reagent
US2206284A (en) * 1939-10-21 1940-07-02 American Cyanamid Co Concentrated aqueous solutions of the ammonium salts of disubstituted dithiophosphoric acids
US2691635A (en) * 1953-05-20 1954-10-12 Dow Chemical Co Process for the manufacture of dialkyl thionocarbamates
US3086653A (en) * 1960-12-12 1963-04-23 American Cyanamid Co Concentrated aqueous solutions of alkali and alkaline earth metal salts of phospho-organic compounds

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2029156A (en) * 1928-11-01 1936-01-28 American Cyanamid Co Oxide flotation
US2043192A (en) * 1934-05-09 1936-06-02 American Cyanamid Co Flotation reagent
US2206284A (en) * 1939-10-21 1940-07-02 American Cyanamid Co Concentrated aqueous solutions of the ammonium salts of disubstituted dithiophosphoric acids
US2691635A (en) * 1953-05-20 1954-10-12 Dow Chemical Co Process for the manufacture of dialkyl thionocarbamates
US3086653A (en) * 1960-12-12 1963-04-23 American Cyanamid Co Concentrated aqueous solutions of alkali and alkaline earth metal salts of phospho-organic compounds

Cited By (20)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4530758A (en) * 1982-05-17 1985-07-23 Thiotech, Inc. Ore flotation method
US4618461A (en) * 1983-07-25 1986-10-21 The Dow Chemical Company O,O'-, O,S'- or S,S'-dithiodialkylene-bis(mono- or dihydrocarbyl carbamothioates) and S,S'-dithiodialkylene-bis(mono- or dihydrocarbyl carbamodithioates) and method of preparation thereof
US4689142A (en) * 1985-03-22 1987-08-25 Essex Industrial Chemicals, Inc. Alkyl mercaptans as collector additives in froth flotation
US4702822A (en) * 1985-07-12 1987-10-27 The Dow Chemical Company Novel collector composition for froth flotation
US4904374A (en) * 1987-10-08 1990-02-27 Sentrachem Limited Froth flotation
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
ES2039310A1 (es) * 1991-10-11 1993-09-16 American Cyanamid Co Perfeccionamiento de un procedimiento para beneficiar un mineral de grupo del oro, plata o platino.
TR26736A (tr) * 1991-10-11 1995-05-15 American Cyanamid Co ALILALKILTIYONOKARBAMAT ILE DITIOFOSFATLAR ARASIN- DAKI SINERJISTIK REAKSIYONLA GüCLü SEKILDE PLATIN GRUBU METALLERI VE ALTIN KAZANIMI
WO1997025149A1 (en) * 1996-01-11 1997-07-17 Allied Colloids Limited Process for recovering minerals and compositions for use in this
WO1997047391A1 (en) * 1996-06-14 1997-12-18 Cytec Technology Corp. New collector composition for flotation of activated sphalerite
US5599442A (en) * 1996-06-14 1997-02-04 Cytec Technology Corp. 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
US9302272B2 (en) 2011-10-18 2016-04-05 Cytec Technology Corp. Froth flotation processes
US9302273B2 (en) 2011-10-18 2016-04-05 Cytec Technology Corp. Froth flotation processes
US9302274B2 (en) 2011-10-18 2016-04-05 Cytec Technology Corp. Collector compositions and methods of using the same
AU2013218789B2 (en) * 2012-02-06 2017-09-28 Teebee Holdings Pty Ltd Thionocarbamates and processes
US20170165681A1 (en) * 2014-07-14 2017-06-15 Clariant International Ltd. Stable Aqueous Composition Of Neutral Collectors And Their Use In Mineral Beneficiation Processes
US10105713B2 (en) * 2014-07-14 2018-10-23 Clariant International Ltd. Stable aqueous composition of neutral collectors and their use in mineral beneficiation processes
US20200147619A1 (en) * 2017-05-24 2020-05-14 Basf Se Alkylated triphenyl phosphorothionates as selective metal sulphide collectors
US11612897B2 (en) * 2017-05-24 2023-03-28 Basf Se Alkylated triphenyl phosphorothionates as selective metal sulphide collectors

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ZA754004B (en) 1976-06-30
ZM9075A1 (en) 1976-03-22
GB1510845A (en) 1978-05-17
BG24790A3 (bg) 1978-05-12
FI61642B (fi) 1982-05-31
SE7508748L (sv) 1976-02-02
FI752067A7 (enrdf_load_stackoverflow) 1976-02-02
BR7504840A (pt) 1976-08-03
CA1026019A (en) 1978-02-07
TR18738A (tr) 1977-07-27
ES439926A1 (es) 1977-06-16
FI61642C (fi) 1982-09-10
PH11134A (en) 1977-10-27
JPS5930467B2 (ja) 1984-07-27
AU8249675A (en) 1977-01-06
SE415961B (sv) 1980-11-17
DE2534249A1 (de) 1976-02-12
JPS5140302A (enrdf_load_stackoverflow) 1976-04-05

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