Separation of cobalt and nickel by solvent extraction

Details Separation of cobalt and nickel by solvent extraction Separation of cobalt and nickel by solvent extraction

1982-03-30

1988-06-14

Adee, John

Liquid purification or separation

Processes

Liquid/liquid solvent or colloidal extraction or diffusing...

75119, 423139, B01D 1100

Patent

active

RE0326941

ABSTRACT:
This invention concerns the method of separation of Co from Ni in an aqueous solution containing Co from Ni salts, with an organic solvent containing 2-ethylhexyl phosphonic acid mono-2-ethylhexyl ester and/or 3,5,5-trimethylhexyl phosphonic acid mono-3,5,5-trimethylhexyl ester and/or isodecyl phosphonic acid monoisodecyl ester as an effective extractant for the separation of Co from Ni, the method which requires fewer stages in the solvent extraction equipment and less organic solvent than the conventional method, and which can very effectively separate Co from Ni in high purity and in high yield. The continuous separation of Co from Ni according to this invention enables the separation of Co with purity above 99% in a yield above 99% and Ni with purity above 99% in a yield above 99%.

REFERENCES:
patent: 3728366 (1973-04-01), Michlmayer
patent: 4005173 (1977-01-01), Pemsler
patent: 4088733 (1978-05-01), De Schepper

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