Solvent extraction of cobalt (II) from sulfate solutions with co

Details Solvent extraction of cobalt (II) from sulfate solutions with co Solvent extraction of cobalt (II) from sulfate solutions with co

1984-08-24

1986-07-15

Doll, John

Specialized metallurgical processes, compositions for use therei

Processes

Free metal or alloy reductant contains magnesium

75108, 75101BE, 75121, 423139, 423140, 423150, 423157, C22B 2304

Patent

active

046004351

ABSTRACT:
Nickel and cobalt contained in aqueous sulfate solution are separately recovered by counter-current solvent extraction using a cobalt-selective organic extractant while scaling of equipment and cobalt recycle are minimized by controlling aqueous pH at the extraction, scrubbing and stripping stages to maximize cobalt loading and selectivity of the extractant while loading scale-causing ions such as calcium and magnesium in the extractant and removing them from the circuit with the aqueous cobalt strip solution.

REFERENCES:
patent: 3399055 (1968-08-01), Ritcey et al.
patent: 4210625 (1980-07-01), Flett

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