Preparation of nickel black

Details Preparation of nickel black Preparation of nickel black

C - Chemistry, Metallurgy

01

G

23/271

C01G 53/04 (2006.01) C01G 1/00 (2006.01)

Patent

CA 1046241

Abstract of the Disclosure Nickel black is prepared by treating a nickeli- ferous solution with a base which does not form a water- soluble complex with nickel so as to raise the pH to at least about 8.0 and precipitate nickel as a basic nickelous precipitate, and oxidizing the precipitated nickel with the aid of a mixture containing oxygen and a reducing agent selected from sulfur dioxide and metal sulfites and bisulfites.

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