FIELD: metallurgy.
SUBSTANCE: separation method of cobalt and nickel from sulphurous solutions is performed by extraction of cobalt with an organic phase containing di(2,4,4-trimethyl pentyl)dithiophosphinic acid (Cyanex 301) in a solvent, in presence of trialkyl phosphine oxide, where alkyl has fraction of C6-C8, at molar ratio of Cyanex 301 : trialkyl phosphine oxide = 1:0.25×1.5. Extraction is performed during 2-3 minutes. Then, re-extraction is performed with solutions of mineral acids.
EFFECT: improvement of separation of cobalt and nickel from sulphate solutions due to increase of cobalt and nickel separation coefficients.
5 tbl, 6 ex
| Title | Year | Author | Number |
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|
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| METHOD OF EXTRACTING GERMANIUM FROM SOLUTIONS | 2008 |
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| NOVEL PHOSPHINIC ACIDS AND SULPHUR-CONTAINING DERIVATIVES THEREOF, AND SYNTHESIS METHODS THEREOF | 2007 |
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| METHOD FOR SELECTIVE EXTRACTION OF COPPER, COBALT, AND NICKEL IONS FROM AQUEOUS SOLUTIONS | 2001 |
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