Purifying copper salts

Details Purifying copper salts Purifying copper salts

C - Chemistry, Metallurgy

01

G

23/156, 53/287

C01G 3/05 (2006.01) C01G 3/00 (2006.01) C22B 3/26 (2006.01) C22B 15/00 (2006.01)

Patent

CA 1158051

ABSTRACT OF DISCLOSURE Cuprous (Copper (I)) chloride is an intermediate for the production of copper metal concentrates. A method of purifying copper salts and particularly cuprous chloride is disclosed which involves utilising the solubility of cuprous chloride and other copper salts in a mixture of water and acetonitrile of 2-hydroxycyanoethane or acrylonitrile and the ability of cuprous chloride to precipitate when the organic component of the mixture is distilled off. The electrolysis of cuprous chloride in water containing at least 10 grams per litre of copper (I), acid and between 5% and 50% by volume of a water soluble organic nitrile such as acetonitrile or 2-hydroxycyanoethane is also disclosed.

326728

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