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...

C - Chemistry, Metallurgy

22

B

C22B 3/04 (2006.01) C22B 3/14 (2006.01) C22B 23/00 (2006.01)

Patent

CA 2521888

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.

L'invention porte sur un procédé de récupération de nickel ou de cobalt dans des matériaux impures de nickel, et/ou de cobalt et/ou de leurs mélanges comportant les étapes suivantes: (a) acquisition d'un tel matériau; (b) et mise en contact dudit matériau avec une solution de carbonate ammoniacal d'ammonium et avec un réducteur dans une étape de lixivation.

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