Treatment of reclaim water for use in metals recovery

Details Treatment of reclaim water for use in metals recovery Treatment of reclaim water for use in metals recovery

C - Chemistry, Metallurgy

02

F

C02F 1/00 (2006.01) C01B 15/00 (2006.01) C22B 3/00 (2006.01) C22B 11/00 (2006.01)

Patent

CA 2619529

A process for improving the recovery of gold from gold-bearing solutions formed from carbonaceous ore using a cyanide lixiviant, the process comprising treatment of tailings pond water with H2SO5 before introduction into a gold- recovery system such that the water has a total concentration of CN- and SCN- reduced by at least 30%.

L~invention concerne un procédé destiné à améliorer la récupération d~or dans des solutions renfermant de l~or formées à partir de minerais carbonés en utilisant un lixiviant à base de cyanure, ledit procédé comprenant le traitement de l~eau de bassins à résidus par H2SO5, avant son introduction dans un dispositif de récupération d~or, de manière à ce que l~eau ait une concentration totale en CN- et SCN- réduite d~au moins 30 %.

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