GB515937A - Improvements in or relating to the concentration of minerals by froth flotation - Google Patents
Improvements in or relating to the concentration of minerals by froth flotationInfo
- Publication number
- GB515937A GB515937A GB16754/38A GB1675438A GB515937A GB 515937 A GB515937 A GB 515937A GB 16754/38 A GB16754/38 A GB 16754/38A GB 1675438 A GB1675438 A GB 1675438A GB 515937 A GB515937 A GB 515937A
- Authority
- GB
- United Kingdom
- Prior art keywords
- copper
- xanthomolybdic
- acid
- pine oil
- 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
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
Landscapes
- Manufacture And Refinement Of Metals (AREA)
- Physical Water Treatments (AREA)
Abstract
515,937. Concentrating minerals. MINERALS SEPARATION, Ltd. June 3, 1938, Nos. 16754 and 16755. Convention dates, June 5, 1937, and Dec. 18, 1937. [Class 82 (ii)] [Also in Group III] A xanthomolybdic acid compound is used as a collecting agent in the froth flotation concentration of minerals. The compound, which can be employed in conjunction with other collectors such as xanthates and dithiophosphates, is prepared by acidification of a solution of a xanthate and a molybdate, the preferred proportions corresponding to 2 molecules of xanthic acid to 1 of molybdic acid. The xanthomolybdic acid compound is precipitated as an oil which solidifies on standing ; it may be purified by solution in ammonia and reprecipitation with acid. The compound may be added in the solid form to the ore during grinding or to the pulp as a solution in an organic liquid such as acetone, chloroform, or ether, or the mixture obtained on acidification of the xanthate-molybdate solution may be added. The concentration of the following ores is described, a xanthomolybdic acid compound being used in each case in addition to the reagents specified :-(1) copper ores using pine oil and lime ; (2) lead ores using soda ash and cresol; zinc ores using copper sulphate and pine oil ; gold and silver ores using pine oil and cresol; molybdenum ore using sodium cyanide and terpineol. In the concentration of a copper-molybdenum ore a copper concentrate is first obtained by using cresol and xanthate with a depressing agent such as starch or other protective colloid to inhibit flotation of molybdenite ; the tailings are then subjected to flotation with pine oil and a xanthomolybdic acid compound to give molybdenite concentrate which is cleaned by refloating with cyanide and pine oil. In the treatment of mixed sulphideoxide copper ores the sulphides may be floated by the use of the xanthomolybdic acid compound and pine oil, the remaining pulp being thickened, leached with sulphuric acid to dissolve the oxide copper which is then precipitated as metallic copper by addition of iron and floated with pine oil, Barrett oil, and the xanthomolybdic acid compound. Alternative treatments comprise (a) removing the oxide copper by leaching and filtering prior to flotation, and (b) dissolving the oxide copper by treatment with sulphuric acid, precipitating by adding iron, and floating the sulphide copper and metallic copper together. Specification 223,860, [Class 82 (ii)] and U.S.A. specification 2,070,076, are referred to.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US515937XA | 1937-06-05 | 1937-06-05 |
Publications (1)
Publication Number | Publication Date |
---|---|
GB515937A true GB515937A (en) | 1939-12-19 |
Family
ID=21972246
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB16754/38A Expired GB515937A (en) | 1937-06-05 | 1938-06-03 | Improvements in or relating to the concentration of minerals by froth flotation |
Country Status (1)
Country | Link |
---|---|
GB (1) | GB515937A (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN101972706A (en) * | 2010-09-08 | 2011-02-16 | 广西大学 | Inhibiting agent for separating copper-molybdenum mineral and preparation method and application thereof |
CN115193573A (en) * | 2022-06-21 | 2022-10-18 | 广东省科学院资源利用与稀土开发研究所 | Beneficiation method for molybdenite rich in pumice |
-
1938
- 1938-06-03 GB GB16754/38A patent/GB515937A/en not_active Expired
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN101972706A (en) * | 2010-09-08 | 2011-02-16 | 广西大学 | Inhibiting agent for separating copper-molybdenum mineral and preparation method and application thereof |
CN101972706B (en) * | 2010-09-08 | 2012-12-19 | 广西大学 | Inhibiting agent for separating copper-molybdenum mineral and preparation method and application thereof |
CN115193573A (en) * | 2022-06-21 | 2022-10-18 | 广东省科学院资源利用与稀土开发研究所 | Beneficiation method for molybdenite rich in pumice |
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