Recovery of copper and zinc from complex chloride solutions

Details Recovery of copper and zinc from complex chloride solutions Recovery of copper and zinc from complex chloride solutions

C - Chemistry, Metallurgy

25

C

53/291, 53/329,

C25C 1/12 (2006.01) C01G 3/00 (2006.01) C01G 9/00 (2006.01) C22B 1/08 (2006.01) C22B 3/10 (2006.01) C22B 3/26 (2006.01) C22B 3/38 (2006.01) C22B 13/08 (2006.01) C22B 13/10 (2006.01) C22B 15/00 (2006.01) C25C 1/16 (2006.01)

Patent

CA 1130237

TITLE RECOVERY OF COPPER AND ZINC FROM COMPLEX CHLORIDE SOLUTIONS INVENTORS Gordon M. Ritcey Kenneth T. Price Bernard H. Lucas ABSTRACT OF THE DISCLOSURE A process for recovering copper and zinc from chloride solutions comprising (1) separating lead (2) solvent extracting with water-immiscible organic liquid including chelating extractant (3) scrubbing the Cu-loaded organic phase whith water or Na2 S04 solutions (4) stripping copper with CuS04-H2S04 solution and electrowinning Cu (5) scrubbing the organic phase to remove sulfate and allow recycle (6) solvent extracting the remaining chloride solution with tributylphosphate (7) scrubbing the zinc-loaded orangic phase with ZnC12 . NaC1 solution (8) stripping zinc with ZnC12-HC1 solution and electrowinning Zn and (9) separating impurities as necessary and recovering chloride solution.

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