C - Chemistry – Metallurgy – 22 – B
Patent
C - Chemistry, Metallurgy
22
B
53/168, 53/229
C22B 11/00 (2006.01) C22B 11/08 (2006.01)
Patent
CA 2001632
ABSTRACT OF THE DISCLOSURE PREVENTION OF COPPER DISSOLUTION DURING CYANIDATION OF GOLD ORES A process for treating copper containing precious metal ores prior to cyanidation and recovery of the precious metal eg gold. The process involves addition to the ore before or after milling of a water soluble or water dispersible surface active agent in the form of a fatty alkyl amine preferably an ethoxylated fatty alkyl amine. The agent reduces the high cyanide consumption, which is caused by copper dissolution, by passivating the mineral surface.
Bennett Charles A.
Crathorne Elizabeth A.
Edwards Raymond
Bennett Charles A.
British Petroleum Company P.l.c. (the)
Crathorne Elizabeth A.
Edwards Raymond
Fetherstonhaugh & Co.
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