Method for leaching material containing zinc oxide and zinc sili

Details Method for leaching material containing zinc oxide and zinc sili Method for leaching material containing zinc oxide and zinc sili

1995-05-23

1996-12-17

Bos, Steven

Chemistry of inorganic compounds

Treating mixture to obtain metal containing compound

Group iib metal

423622, C01G 900, C22B 1900

Patent

active

055850790

ABSTRACT:
The invention relates to a method for recovering zinc from a zinc oxide bearing material containing silicates. According to the method, the leaching of zinc compounds is carried out in circumstances where the silicates remain undissolved and consequently do not cause filtering problems. The silicate bearing residue is treated in a Waelz process, so that the major part of the silicic acid contained in the silicates is combined in the iron silicate slag formed in the Waelz process, and the zinc is returned into leaching mainly in oxidic form.

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patent: 3954937 (1976-05-01), Bodson
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patent: 4440569 (1984-04-01), Weir et al.
patent: 4510028 (1985-04-01), Bolton et al.
patent: 4778520 (1988-10-01), Spink et al.

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