Precipitation of chloride from zinc sulphate solution

Details Precipitation of chloride from zinc sulphate solution Precipitation of chloride from zinc sulphate solution

C - Chemistry, Metallurgy

01

G

23/89

C01G 9/06 (2006.01) C01G 5/02 (2006.01)

Patent

CA 1133227

ABSTRACT OF THE DISCLOSURE A process is described for the removal of chloride impurity from zinc sulphate solution. The process comprises the steps of forming a slurry of said solution with an inert particulate support material having elemental silver dispersed thereon, and an oxidizing agent, agitating said slurry at a temperature between about 60 and about 100°C for precipitation of silver chloride on said support material, filtering said slurry to separate purified zinc sulphate solution from the support material containing the precipitated silver chloride, and treating said separated support material containing precipitated silver chloride with a reductant in an aqueous alkaline medium to regenerate elemental silver on said support material.

348517

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