Bacterially assisted heap leach

Details Bacterially assisted heap leach Bacterially assisted heap leach

2005-11-29

2005-11-29

Bos, Steven (Department: 1754)

Chemistry of inorganic compounds

Treating mixture to obtain metal containing compound

Group ib metal

C423S150100, C423SDIG017

Reexamination Certificate

active

06969499

ABSTRACT:
A bacterially assisted heap leach characterized by the steps of: providing an ore heap to oxidize sulphide minerals therein; providing a biological contactor inoculated with ferrous iron oxidizing bacteria; providing at least one leach solution pond to feed solution to, and receive leach solution from both the heaps; and bleeding a portion of the leach solution and passing same to a means for metals recovery.

REFERENCES:
patent: 2829964 (1958-04-01), Zimmerley et al.
patent: 4918018 (1990-04-01), Waskovsky
patent: 5688304 (1997-11-01), Kohr et al.
patent: 9918524 (1999-09-01), None
patent: 522978 (1993-01-01), None
patent: 2 640 284 (1990-06-01), None
patent: WO 9612826 (1996-05-01), None
patent: WO 9638381 (1996-12-01), None
Bartlett, R., “Metal extraction from ores by heap leaching”,Metallurgical and Materials Transactions B, 28B:4(Aug. 1997), pp. 529-545.

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