Method for recovering rare metals in zinc leaching process

Details Method for recovering rare metals in zinc leaching process Method for recovering rare metals in zinc leaching process

2006-12-27

2010-10-12

Wyszomierski, George (Department: 1793)

Specialized metallurgical processes, compositions for use therei

Processes

Free metal or alloy reductant contains magnesium

C423S122000, C423S140000

Reexamination Certificate

active

07811357

ABSTRACT:
Sulphidic zinc concentrate usually also includes small amounts of rare metals such as indium and gallium. If the content of these metals in the raw material is sufficiently high, their recovery may be economically worthwhile. In the method according to the invention the recovery of indium and other desirable rare metals takes place in a zinc leaching process, in which at least part of the sulphidic concentrate is leached directly without roasting.

REFERENCES:
patent: 3976743 (1976-08-01), Landucci et al.
patent: 6475450 (2002-11-01), Saruta et al.
patent: 2004/0067183 (2004-04-01), Fugleberg
patent: 0246481 (2002-06-01), None
patent: WO 03/056042 (2003-07-01), None
patent: 2004076698 (2004-09-01), None

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