EP0107562B1 - Enrichissement de minerais par flottation et agents collecteurs employés a cet effet - Google Patents

Enrichissement de minerais par flottation et agents collecteurs employés a cet effet Download PDF

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Publication number
EP0107562B1
EP0107562B1 EP83401957A EP83401957A EP0107562B1 EP 0107562 B1 EP0107562 B1 EP 0107562B1 EP 83401957 A EP83401957 A EP 83401957A EP 83401957 A EP83401957 A EP 83401957A EP 0107562 B1 EP0107562 B1 EP 0107562B1
Authority
EP
European Patent Office
Prior art keywords
polysulphide
process according
flotation
collector
ores
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.)
Expired
Application number
EP83401957A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP0107562A1 (fr
Inventor
Jacques Maurice
Patrice Guesnet
Pierre Tozzolino
Guy Muller
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Societe Nationale Elf Aquitaine Production SA
Original Assignee
Societe Nationale Elf Aquitaine Production SA
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Societe Nationale Elf Aquitaine Production SA filed Critical Societe Nationale Elf Aquitaine Production SA
Publication of EP0107562A1 publication Critical patent/EP0107562A1/fr
Application granted granted Critical
Publication of EP0107562B1 publication Critical patent/EP0107562B1/fr
Expired legal-status Critical Current

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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
    • B03D1/001—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

  • the present invention relates to the enrichment of ores by flotation with organic collectors, constituted by thio compounds. More specifically, it targets the processing of ores based on heavy metal oxides and sulfides.
  • Alkyl polysulfides have been proposed, in the same way as alkylnaphthalenes, alkyl- and chloroalkyltetralins, or mercaptans, as additives to the flotation collectors constituted by amines with a long aliphatic chain, in particular C 7 at C t g or more. If by this means - according to US-A-3,059,774, we can save some of the expensive amines, there is still no question of being able to replace them completely.
  • the present invention is based on the discovery that the collecting properties of a thio compound can be intensified by a certain accumulation of sulfur atoms in the molecules of these compounds.
  • dialkyl polysulfides can give better results than the corresponding mercaptan; this is surprising theoretically, since polysulfides have a molecular structure with two lipophilic chains. This fact is all the more unexpected since the alkyl polysulfides with more C a are even less soluble in water than the mercaptans.
  • the process according to the invention consists in carrying out the flotation of ores or minerals in the general manner known per se, but with at least one dihydrocarbyl polysulphide as collector, or jointly with a collector of known type other than a long-chain aliphatic amine, this or these polysulphides being represented by the formula where R and R ', similar or different, are alkyls or alkenyls which can carry substituents and x is a number with an average value of 2 to 8.
  • the substituents of the hydrocarbon groups R or / and R ' can be other aliphatic, cycloaliphatic or aryl radicals, halogens, nitriles or of groups OH, -COOH, NO 2 , NH 2 , CONH 2 , esters or carbonyls.
  • the substituents providing affinity for water are particularly favorable.
  • the groups R and R ' are C 6 to C 18 linear or branched.
  • a method of preparing such polysulphides which consists in treating, for example, the corresponding mercaptan with sulfur, in the presence of an amine as catalyst, according to the reaction:
  • This process actually provides a mixture of polysulfides of different numbers of S atoms, where x is actually an average of these numbers.
  • the polysulfides according to the invention are practically insoluble in water, they can be introduced into the ore pulp to be treated in the form of a solution in a solvent, in that of emulsion or extremely fine dispersion.
  • a solvent in that of emulsion or extremely fine dispersion.
  • the emulsion can be produced by mixing with a surfactant liquid such as polyethoxylated polyol or alkylphenol, petroleum sulfonate, polyalkoxylated mercaptan, a fatty acid ester of polyoxyalkylene or sorbitan, etc.
  • the aqueous or other dispersion it can be obtained by wet micronization.
  • the molar proportions of the new collectors, according to the invention, to be used in flotation are the same as those of the known technique, that is to say in general about 0.05 to 0.5, and more often of 0.1 to 0.25 moles per tonne of ore.
  • a series of flotation tests is carried out on copper sulphide ore from the South African mine at Palabora, with a Cu content of 0.45 to 0.48%. 600 g of this ore are ground to a fineness such that 76% of the powder passes through a 148 micron mesh sieve.
  • the product After adding the necessary adjuvants, the product is subjected to flotation for 20 minutes at pH 7.5, in a 2.5-liter laboratory cell of the MINEMET M 130 type, in the presence of methyl-isobutyl carbinol as a foaming agent. , added at a rate of 25 g per tonne of ore.
  • the collectors are introduced in the form of mixtures of 57.5% by weight of thio compounds with 42.5% of surfactant, nonyl phenol polyoxyethylene, known commercially under the trademark "SIMULSOL 730".
  • surfactant nonyl phenol polyoxyethylene, known commercially under the trademark "SIMULSOL 730".
  • examples 1 and 2 usual mercaptans in flotation and, on the other hand, (examples 3 to 6) polysulfides according to the invention; their proportion, in millimoles per tonne of ore, is indicated in the Table of results, which follows.
  • the Cu concentrations obtained are always higher, with the polysulphides, than those given by conventional collectors.
  • the pentasulfides allow a copper recovery comparable or superior to that of the mercaptans.

Landscapes

  • Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
  • Manufacture And Refinement Of Metals (AREA)
  • Paper (AREA)
EP83401957A 1982-10-13 1983-10-07 Enrichissement de minerais par flottation et agents collecteurs employés a cet effet Expired EP0107562B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR8217128 1982-10-13
FR8217128A FR2534493B1 (fr) 1982-10-13 1982-10-13 Enrichissement de minerais par flottation et agents collecteurs employes a cet effet

Publications (2)

Publication Number Publication Date
EP0107562A1 EP0107562A1 (fr) 1984-05-02
EP0107562B1 true EP0107562B1 (fr) 1987-08-12

Family

ID=9278233

Family Applications (1)

Application Number Title Priority Date Filing Date
EP83401957A Expired EP0107562B1 (fr) 1982-10-13 1983-10-07 Enrichissement de minerais par flottation et agents collecteurs employés a cet effet

Country Status (9)

Country Link
US (1) US4554137A (fi)
EP (1) EP0107562B1 (fi)
AU (1) AU562923B2 (fi)
CA (1) CA1215547A (fi)
DE (1) DE107562T1 (fi)
ES (1) ES8501251A1 (fi)
FI (1) FI74892C (fi)
FR (1) FR2534493B1 (fi)
ZA (1) ZA837622B (fi)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4735711A (en) * 1985-05-31 1988-04-05 The Dow Chemical Company Novel collectors for the selective froth flotation of mineral sulfides
US5338338A (en) * 1992-09-22 1994-08-16 Geobiotics, Inc. Method for recovering gold and other precious metals from carbonaceous ores
US5364453A (en) * 1992-09-22 1994-11-15 Geobiotics, Inc. Method for recovering gold and other precious metals from carbonaceous ores
WO2024137153A1 (en) 2022-12-21 2024-06-27 Arkema Inc. Sulfur compositions for froth flotation of ores
WO2024172017A1 (ja) * 2023-02-15 2024-08-22 住友化学株式会社 浮選剤およびヒ素非含有銅鉱物の回収方法

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1774183A (en) * 1927-05-13 1930-08-26 Barrett Co Concentration of minerals
US2027357A (en) * 1927-05-13 1936-01-07 Barrett Co Flotation of minerals
GB362366A (en) * 1929-09-04 1931-12-01 Minerals Separation Ltd Improvements in or relating to concentration by froth flotation
US3059774A (en) * 1961-07-31 1962-10-23 United States Borax Chem Method and means for beneficiating ores
FR2429617A1 (fr) * 1978-06-27 1980-01-25 Elf Aquitaine Nouveaux collecteurs pour la flottation des minerais
US4341626A (en) * 1980-12-22 1982-07-27 American Cyanamid Company Process for the flotation of sulfide minerals employing alkylaryl hydrocarbon compounds

Also Published As

Publication number Publication date
US4554137A (en) 1985-11-19
FI74892C (fi) 1988-04-11
DE107562T1 (de) 1984-09-13
ES526758A0 (es) 1984-12-01
AU562923B2 (en) 1987-06-25
FR2534493A1 (fr) 1984-04-20
AU2015483A (en) 1984-04-19
FR2534493B1 (fr) 1986-05-30
FI833716A0 (fi) 1983-10-12
FI833716A (fi) 1984-04-14
ES8501251A1 (es) 1984-12-01
CA1215547A (fr) 1986-12-23
FI74892B (fi) 1987-12-31
ZA837622B (en) 1984-06-27
EP0107562A1 (fr) 1984-05-02

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