C - Chemistry – Metallurgy – 22 – B
Patent
C - Chemistry, Metallurgy
22
B
53/11, 53/226
C22B 11/08 (2006.01) C22B 1/24 (2006.01) C22B 3/04 (2006.01)
Patent
CA 1337576
An agglomerative heap leaching method for recovering gold, silver or other metals from low grade refractory ores. Hypochlorite compounds are incorporated directly into the ore agglomerates as they are formed. This provides ample time and opportunity for the hypochlorite to destroy, modify or passivate refractory components of the ore thereby improving metal recovery in the subsequent cyanide leaching step.
592262
Barrois Melvin John
Mccord Thomas Hume
O'neil Gregory Robert
Perez Jesus Wilfredo
Freeport-Mcmoran Copper & Gold Inc.
Smart & Biggar
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