Reductive ammoniacal leaching of nickel and cobalt bearing...

Details Reductive ammoniacal leaching of nickel and cobalt bearing... Reductive ammoniacal leaching of nickel and cobalt bearing...

2004-04-08

2009-10-13

Mayes, Melvin C (Department: 1793)

Chemistry of inorganic compounds

Treating mixture to obtain metal containing compound

Iron group metal

C423S140000, C423S141000, C423S142000, C423S143000, C423S150100, C423S150300, C423S150400

Reexamination Certificate

active

07601314

ABSTRACT:
A process for the recovery of nickel and/or cobalt from an impure nickel, cobalt or mixed nickel/cobalt material including the steps of: a) providing a nickel, cobalt or mixed nickel/cobalt material; and b) contacting the nickel, cobalt or mixed nickel/cobalt material with a feed ammoniacal ammonium carbonate solution and a reductant in a leach step.

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Derwent Accession No. 94-222418/27, JP 06158186 (Mitsubishi Materials Corp.) Jun. 7, 1994 & abstract.
Derwent Accession No. 94-174076/21, JP 0611662 A (Mitsubishi Materials Corp) Apr. 26, 1994 & abstract.

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