Process for refining gold

Details Process for refining gold Process for refining gold

C - Chemistry, Metallurgy

22

B

53/232

C22B 3/32 (2006.01) C22B 3/26 (2006.01)

Patent

CA 1197986

ABSTRACT OF THE DISCLOSURE A process for refining gold from a crude gold having a purity more than 90% by dissolving it in an aqua regia, adding a masking agent into the dissolving solution to seal metals other than gold, extracting a chloroauric acid from the solution with an organic solvent, washing the extracted solution with hydrochloric acid, and then stripping the gold as a gold hydroxide into an aqueous phase. A gold of high purity is obtained at a lower cost.

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