Removing zinc from a nickel solution by extraction

Details Removing zinc from a nickel solution by extraction Removing zinc from a nickel solution by extraction

1977-10-12

1978-11-14

Hearn, Brian

Chemistry of inorganic compounds

Treating mixture to obtain metal containing compound

Iron group metal

423100, 423140, 204112, C01G 5300

Patent

active

041255879

ABSTRACT:
A process for removing zinc from an aqueous solution of a nickel salt by liquid-liquid extraction using as the extraction agent an organic phosphoric acid dissolved in an organic solvent, adding a strongly oxidizing substance at an elevated temperature to the aqueous phase emerging from the extraction to precipitate the cobalt as a hydroxide and decompose the organic phase left in the aqueous phase and to adsorb it into the cobalt hydroxide precipitate, and finally separating it from the pure aqueous nickel salt solution.

REFERENCES:
patent: 3966569 (1976-06-01), Reinhardt et al.
patent: 4011297 (1977-03-01), Nyman et al.
Ritcey, G. et al., "Some Comments on the Loss, and Environmental Effects of Solvent Extraction Reagents Used in Metallurgical Processing," in Solvent Extraction, I.S.E.C., 1974, vol. III, Soc. Chem. Industry, London, 1974, pp. 2873-2875.

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