A bacterially assisted heap leach

Details A bacterially assisted heap leach A bacterially assisted heap leach

C - Chemistry, Metallurgy

22

B

C22B 3/18 (2006.01) C22B 3/04 (2006.01) C22B 3/06 (2006.01) C22B 23/00 (2006.01)

Patent

CA 2391091

A bacterially assisted heap leach characterised by the steps of. providing an ore heap to oxidise sulphide minerals therein, providing a biological contactor inoculated with ferrous iron oxidising bacteria, providing at least one leach solution pond to feed solution to, and receive leach solution from both the heaps; and bleeding a portion of the leach solution and passing same to a means for metals recovery.

L'invention concerne un procédé de lixiviation bactérienne en tas consistant à fournir un tas de minerais afin d'en oxyder les minéraux sulfurés, à fournir un contacteur biologique inoculé de bactéries oxydant le fer ferreux, à fournir au moins un bassin de solution de lixiviation pour alimenter la solution à des tas de minéraux et recevoir la solution de ces derniers, et à purger une partie de la solution de lixiviation et à l'acheminer à un dispositif de récupération des métaux.

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