Process for metal recovery by solvent extraction from CaSO.sub.4

Details Process for metal recovery by solvent extraction from CaSO.sub.4 Process for metal recovery by solvent extraction from CaSO.sub.4

1985-08-19

1986-09-09

Doll, John

Chemistry of inorganic compounds

Treating mixture to obtain metal containing compound

Alkaline earth metal

423139, 4236585, B01D 1100, C22B 100

Patent

active

046108610

ABSTRACT:
A multistage countercurrent solvent extraction process for removing cobalt from an aqueous sulfate solutions containing saturation amounts of calcium using an organic soluble phosphinic acid as the extractant preferably characterized by control of pH in various stages of the process to minimize scaling of gypsum in the extraction equipment.

REFERENCES:
patent: 3055754 (1962-09-01), Fletcher
patent: 3140915 (1964-07-01), Axelrod et al.
patent: 3154390 (1964-10-01), Goren
patent: 3387944 (1968-06-01), Sherrington et al.
patent: 4320099 (1982-03-01), Babjak
patent: 4353883 (1982-10-01), Rickelton et al.
patent: 4551314 (1985-11-01), Beckstead et al.

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