Process for purifying silver refinery slimes

Details Process for purifying silver refinery slimes Process for purifying silver refinery slimes

C - Chemistry, Metallurgy

22

B

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C22B 3/06 (2006.01) C01G 5/00 (2006.01) C01G 7/00 (2006.01) C01G 55/00 (2006.01) C22B 3/00 (2006.01) C22B 3/04 (2006.01) C22B 3/10 (2006.01) C22B 7/00 (2006.01) C22B 11/00 (2006.01) C22B 11/06 (2006.01)

Patent

CA 1279196

A B S T R A C T Gold sand resulting from the nitric acid treat- ment of silver refinery slimes is purified by washing with hydrochloric acid under controlled operating conditions. Platinum and other precious metals and impurities are selectively separated from the gold sand leaving a gold sand which is more efficiently refined.

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