Solvent extraction process

Details Solvent extraction process Solvent extraction process

1982-02-22

1986-04-15

Doll, John

Chemistry of inorganic compounds

Treating mixture to obtain metal containing compound

Group ib metal

423139, 423DIG14, 75101BE, 75117, B01D 1100

Patent

active

045826897

ABSTRACT:
Improved solvent extraction processes for recovery of copper values from aqueous solutions which also contain dissolved iron values. In continuous, multiple stage, solvent extraction circuits, the overall copper/iron selectivity of reagents including hydroxy oxime extractants is enhanced by providing non-uniform residence times for aqueous feedstocks in extraction stages, i.e., longer effective residence times for the feedstocks in one or more initial extraction stages of contact with the reagent than in subsequent stages of contact with the reagent.

REFERENCES:
patent: 3479378 (1969-11-01), Orlandini
patent: 3927169 (1975-12-01), Goren
Chemistry and Industry, Sep. 3, 1977, pp. 706-718.
Ritcey, CIM Bulletin, Feb. 1974, pp. 87-92.

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