Recovery of zinc from sulphidic concentrates

Details Recovery of zinc from sulphidic concentrates Recovery of zinc from sulphidic concentrates

1996-08-20

1998-06-23

Bos, Steven

Chemistry of inorganic compounds

Treating mixture to obtain metal containing compound

Group ib metal

423 98, 423109, 205608, B03D 100, C22B 1900, C22B 300

Patent

active

057701709

ABSTRACT:
There is provided a novel class of additives, specifically coals, which are useful in zinc extraction processes involving one or more pressure leach stages carried out at temperatures above the melting point of sulphur. Such processes may include those incorporating a single stage pressure leach, a process involving two stage countercurrent or cocurrent pressure leaches or a multistage leach process for recovering zinc, lead and silver from zinc bearing sulphidic materials which also contain lead and silver.

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patent: 4832925 (1989-05-01), Weir et al.
patent: 5651947 (1997-07-01), Collins et al.

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