Cyanide-leaching process

摘要

A process for recovering a precious metal from ore comprises: adding process water containing thiocyanates to ore particles to obtain a pulp; contacting the pulp having a basic pH with an oxidizing gas containing ozone; and contacting the pulp with cyanide. Contacting the pulp with cyanide can include adding cyanide subsequently to contacting the pulp with the oxidizing gas containing ozone. 5917110_1 (GHMatters) P98523.AU BELAG 0)7 '(D ar u' 4- u4 II, .P z 0) in 4- 4- C 0) 0 z~nO 0o®