EP0107562A1 - Erzanreicherung durch Flotation und dafür verwendete Sammelbehälter - Google Patents
Erzanreicherung durch Flotation und dafür verwendete Sammelbehälter Download PDFInfo
- Publication number
- EP0107562A1 EP0107562A1 EP83401957A EP83401957A EP0107562A1 EP 0107562 A1 EP0107562 A1 EP 0107562A1 EP 83401957 A EP83401957 A EP 83401957A EP 83401957 A EP83401957 A EP 83401957A EP 0107562 A1 EP0107562 A1 EP 0107562A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- flotation
- ores
- polysulfide
- concentration
- reagents used
- 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.)
- Granted
Links
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 sulphides.
- 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 dihydro-carbyl polysulfide as collector, or jointly with a collector of known type, 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 functional groups, for example OH, -COOH, NO 2 , NH 2 , CONH 2 , esters, carbonyls, etc.
- Functional substituents, providing affinity for water, are particularly favorable.
- the groups R and / and R ' are generally in C 1 to C18 linear or branched, and especially in C4 to C 1 2 "
- 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 surface-active 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 tensio-ac tif, nonyl phenol polyoxyethylene, known commercially under the trademark "SIMULSOL 730". These are, on the one hand, (examples 1 and 2) usual mercaptans in flotation and, on the other hand,. (Examples 3 to 6) of the 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
- Manufacture And Refinement Of Metals (AREA)
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
- Paper (AREA)
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR8217128A FR2534493B1 (fr) | 1982-10-13 | 1982-10-13 | Enrichissement de minerais par flottation et agents collecteurs employes a cet effet |
FR8217128 | 1982-10-13 |
Publications (2)
Publication Number | Publication Date |
---|---|
EP0107562A1 true EP0107562A1 (de) | 1984-05-02 |
EP0107562B1 EP0107562B1 (de) | 1987-08-12 |
Family
ID=9278233
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP83401957A Expired EP0107562B1 (de) | 1982-10-13 | 1983-10-07 | Erzanreicherung durch Flotation und dafür verwendete Sammelbehälter |
Country Status (9)
Country | Link |
---|---|
US (1) | US4554137A (de) |
EP (1) | EP0107562B1 (de) |
AU (1) | AU562923B2 (de) |
CA (1) | CA1215547A (de) |
DE (1) | DE107562T1 (de) |
ES (1) | ES526758A0 (de) |
FI (1) | FI74892C (de) |
FR (1) | FR2534493B1 (de) |
ZA (1) | ZA837622B (de) |
Families Citing this family (3)
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 |
US5364453A (en) * | 1992-09-22 | 1994-11-15 | Geobiotics, Inc. | Method for recovering gold and other precious metals from carbonaceous ores |
US5338338A (en) * | 1992-09-22 | 1994-08-16 | Geobiotics, Inc. | Method for recovering gold and other precious metals from carbonaceous ores |
Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US1774183A (en) * | 1927-05-13 | 1930-08-26 | Barrett Co | Concentration of minerals |
GB362366A (en) * | 1929-09-04 | 1931-12-01 | Minerals Separation Ltd | Improvements in or relating to concentration by froth flotation |
US2027357A (en) * | 1927-05-13 | 1936-01-07 | Barrett Co | Flotation of minerals |
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 |
Family Cites Families (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4341626A (en) * | 1980-12-22 | 1982-07-27 | American Cyanamid Company | Process for the flotation of sulfide minerals employing alkylaryl hydrocarbon compounds |
-
1982
- 1982-10-13 FR FR8217128A patent/FR2534493B1/fr not_active Expired
-
1983
- 1983-10-07 EP EP83401957A patent/EP0107562B1/de not_active Expired
- 1983-10-07 DE DE198383401957T patent/DE107562T1/de active Pending
- 1983-10-12 CA CA000438865A patent/CA1215547A/fr not_active Expired
- 1983-10-12 FI FI833716A patent/FI74892C/fi not_active IP Right Cessation
- 1983-10-13 AU AU20154/83A patent/AU562923B2/en not_active Ceased
- 1983-10-13 ZA ZA837622A patent/ZA837622B/xx unknown
- 1983-10-13 ES ES526758A patent/ES526758A0/es active Granted
- 1983-10-13 US US06/541,776 patent/US4554137A/en not_active Expired - Lifetime
Patent Citations (5)
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 |
Also Published As
Publication number | Publication date |
---|---|
FI833716A0 (fi) | 1983-10-12 |
ES8501251A1 (es) | 1984-12-01 |
FI74892C (fi) | 1988-04-11 |
ZA837622B (en) | 1984-06-27 |
FI833716A (fi) | 1984-04-14 |
EP0107562B1 (de) | 1987-08-12 |
FR2534493B1 (fr) | 1986-05-30 |
FR2534493A1 (fr) | 1984-04-20 |
DE107562T1 (de) | 1984-09-13 |
US4554137A (en) | 1985-11-19 |
FI74892B (fi) | 1987-12-31 |
AU2015483A (en) | 1984-04-19 |
AU562923B2 (en) | 1987-06-25 |
CA1215547A (fr) | 1986-12-23 |
ES526758A0 (es) | 1984-12-01 |
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