High temperature leaching process

Details High temperature leaching process High temperature leaching process

C - Chemistry, Metallurgy

22

B

C22B 3/18 (2006.01) C22B 3/08 (2006.01) C22B 15/00 (2006.01)

Patent

CA 2703863

A method of conducting a bioleaching process including the steps of forming a main heap, culturing at least one microorganism which exhibits bioleaching activity in a predetermined temperature range, monitoring the temperature in the main heap, which is a result, at least, of microbial leaching activity and inoculating the heap with the cultured microorganism at least before the temperature reaches the predetermined range.

L'invention porte sur un procédé de biolixiviation en tas qui permet de récupérer du cuivre à partir d'un minerai de chalcopyrite au moins, lequel procédé consiste à former un tas du minerai et à ajouter ensuite au tas des cultures thermophiles oxydant le fer et le soufre au moins avant que la température du tas n'atteigne la région thermophile.

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