Process for separating cobalt and nickel by solvent extraction

Details Process for separating cobalt and nickel by solvent extraction Process for separating cobalt and nickel by solvent extraction

1978-01-10

1980-07-01

Hearn, Brian E.

Chemistry of inorganic compounds

Treating mixture to obtain metal containing compound

Iron group metal

C01G 5300

Patent

active

042106257

ABSTRACT:
This invention relates to the refining of metals containing cobalt and nickel by solvent extraction.
In particular the invention relates to a process for the separation of cobalt and nickel by solvent extraction comprising contacting an aqueous solution containing cobalt and nickel ions with an organic phase containing an ester of phosphoric acid in which the temperature and concentration of cobalt in the organic phase enable substantially all of the cobalt present in that phase to convert to a tetrahedral configuration.

REFERENCES:
patent: 3399055 (1968-08-01), Ritcey
Sata et al., "The Complexes Formed in the Divalent Transition Metal--Sulphuric Acid--DI--(2-Ethylhexyl)--Phosphoric Acid Extraction Systems--Cobalt (II), Nickel (II) and Copper II Complexes," J. Inorg. Nucl. Chem., 1972, pp. 3721-3730.
Proceedings of the International Solvent Extraction Conference, 1974, Soc. Chem. Ind., London, (1974), vol. I, pp. 767-778, 871-891.
Barnes et al., J. Inorg. and Nuclear Chemistry, 1976, vol. 38, pp. 1065-1067.

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