Chloride heap leaching

Details Chloride heap leaching Chloride heap leaching

C - Chemistry, Metallurgy

22

B

C22B 15/00 (2006.01) C22B 3/04 (2006.01) C22B 3/06 (2006.01)

Patent

CA 2651516

A heap leaching method to recover copper from a primary copper sulphide mineral wherein the mineral is leached in an acidic chloride or mixed chloride/sulphate solution in the presence of oxygen with the surface potential of the mineral below 600 mV (vs. SHE) to cause dissolution of the copper sulphide.

L'invention concerne un procédé de lixiviation en tas permettant de récupérer du cuivre à partir d'un minéral de sulfure de cuivre primaire, le minéral étant lixivié dans une solution de chlorure acide ou une solution mixte de chlorure/sulfate en présence d'oxygène avec le potentiel de surface du minéral inférieur à 600 mV (vs. SHE) afin d'entraîner la dissolution du sulfure de cuivre.

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