Purification of nickel chloride solutions

Details Purification of nickel chloride solutions Purification of nickel chloride solutions

C - Chemistry, Metallurgy

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C01G 53/09 (2006.01) C22B 3/28 (2006.01) C22B 3/38 (2006.01)

Patent

CA 1138650

F.889 PURIFICATION OF NICKEL CHLORIDE SOLUTIONS ABSTRACT OF THE DISCLOSURE Aqueous nickel chloride solutions containing such im- purities as copper, iron, and zinc, and optionally, cobalt, and having an acid concentration ranging from about 0.2N to 4N HCl together with a total chloride concentration of about 4N to 11N are purified of said impurities by solvent extrac- tion with an organic extractant of essentially tributyl phosphate (TBP) dissolved in a water-immiscible organic solvent, the solvent extraction being carried out at a sel- ected concentration of TBP and a selected volume ratio of organic to the aqueous solution effective to produce a nickel raffinate substantially impoverished in said impurities.

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