Chemistry of inorganic compounds – Treating mixture to obtain metal containing compound – Group ib metal
Patent
1996-01-26
1999-02-09
Gorgos, Kathryn
Chemistry of inorganic compounds
Treating mixture to obtain metal containing compound
Group ib metal
23293S, 75743, 75744, 205582, 205583, 205584, 205604, 205606, 205607, 205570, 209165, 423 27, 423 41, 423 99, 423109, 4235782, B01D 1102, C22B 1100, C22B 1500, C22B 1900
Patent
active
058690123
ABSTRACT:
A process for the extraction of zinc from a sulphide ore or concentrate containing copper and zinc includes subjecting the concentrate to pressure oxidation in the presence of oxygen and an acidic halide solution to obtain a resulting pressure oxidation slurry and subjecting the slurry to a liquid/solid separation step to produce a liquor containing copper and zinc in solution. The liquor containing the copper and zinc is subjected to a first solvent extraction with a copper extractant to remove copper from the solution and to produce a copper depleted raffinate. The copper depleted raffinate is subjected to a second solid extraction with a zinc extractant to produce a zinc depleted raffinate and the zinc depleted raffinate is recycled to the pressure oxidation step.
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Carroll Chrisman D.
Cominco Engineering Services Ltd.
de Kock Elbie R.
Gorgos Kathryn
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