Extraction of cobalt, copper and nickel values from...

Details Extraction of cobalt, copper and nickel values from... Extraction of cobalt, copper and nickel values from...

C - Chemistry, Metallurgy

22

B

53/292

C22B 3/42 (2006.01) B01J 45/00 (2006.01) C01G 3/00 (2006.01) C01G 51/00 (2006.01) C01G 53/00 (2006.01) C22B 3/44 (2006.01)

Patent

CA 1097505

PC-877 EXTRACTION OF COBALT, COPPER AND NICKEL VALUES FROM AMMONIACAL SOLUTIONS. ABSTRACT OF THE DISCLOSURE Cobalt, copper and nickel values are separated from ammoniacal aqueous solutions by contacting the solutions with a chelate exchange resin of polymerized ar-vinylbenzyl- amino dicarboxylic acids whereby the cobalt, copper and nickel values are loaded on the chelate exchange resin, stripping the cobalt, copper and nickel values from the loaded chelate exchange resin by contacting the loaded resin with a mineral acid and restoring the capacity of the chelate exchange resin when it falls below a predetermined value by reacting the degraded chelate exchange resin with an aqueous solution of a halo salt of a carboxylic acid, the aqueous solution being maintained at a pH value greater than about 8. (1)

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