Method for refining aqueous nickel chloride solution

Details Method for refining aqueous nickel chloride solution Method for refining aqueous nickel chloride solution

C - Chemistry, Metallurgy

22

B

C22B 3/20 (2006.01) B01D 15/04 (2006.01) B01J 41/00 (2006.01) C01G 53/09 (2006.01) C22B 3/42 (2006.01) C22B 3/44 (2006.01) C22B 9/00 (2006.01) C22B 23/00 (2006.01)

Patent

CA 2481729

A method for refining an aqueous nickel chloride solution to efficiently remove an impurity element, in particular zinc, which can form a complex with chlorine from the solution by a simple system at a low cost. More concretely, method for refining an aqueous nickel chloride solution containing zinc and one or more other impurity elements which can form a complex with chlorine, comprising a first step for oxidation/neutralization of the solution adjusted beforehand under given conditions with respect to Ni concentration, oxidation-reduction potential and pH to remove the impurity elements, and a second step for ion-exchanging the solution refined by the first step with an anion-exchange resin to remove zinc by adsorption.

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