Method of concentrating silver from anode slime

Details Method of concentrating silver from anode slime Method of concentrating silver from anode slime

C - Chemistry, Metallurgy

22

B

53/220

C22B 7/00 (2006.01)

Patent

CA 1190047

ABSTRACT OF THE DISCLOSURE A method of concentrating silver from anode slime which comprises reacting-an intermediate product obtained by treatment of the slime, the intermediate product containing lead in sulfate form and silver in chloride form, with an aqueous solution of an alkali hydroxide or carbonate. The obtained reaction product is then subjected to solid-liquid separation, and the resulting residue is reacted with a nitric acid solution so that the lead therein may be separated into a filtrate, while the silver will remain in the residue.

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