Process for the recovery of nickel and/or cobalt from a...

Details Process for the recovery of nickel and/or cobalt from a... Process for the recovery of nickel and/or cobalt from a...

C - Chemistry, Metallurgy

22

B

C22B 23/00 (2006.01) C22B 3/04 (2006.01) C22B 3/14 (2006.01) C22B 3/26 (2006.01)

Patent

CA 2356048

A process for the recovery of nickel and/or cobalt values from a concentrate containing nickel or cobalt hydroxide comprises the steps of subjecting the concentrate to a leaching stage with an ammonium solution to produce a leach solution containing nickel and/or cobalt values and a residue. The nickel concentration in the leach solution is controlled to a maximum value of about 3 to 25 g/l, preferably 8 to 15 g/l and more preferably 10 g/l.

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