Base metal recovery

C - Chemistry – Metallurgy – 22 – B

Patent

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Details

C22B 3/06 (2006.01) C22B 15/00 (2006.01) C22B 19/20 (2006.01) C22B 23/00 (2006.01)

Patent

CA 2373012

A process for recovering a base metal from a material, the base metal being selected from cobalt, copper, nickel and zinc, the process comprising the steps of reacting the host material with a ferric ion species in a leach solution, at conditions sufficient to cause at least a portion of the base metal to be oxidized by the ferric ion species, thereby causing the ferric ion species to be converted to a ferrous ion species, and oxidizing the ferrous ion species with an oxidation mixture of SO2 and oxygen to form the ferric ion species for subsequent reaction with the material.

Procédé servant à récupérer un métal de base depuis un matériau, ce métal de base étant sélectionné dans cobalt, cuivre, nickel et zinc. Ce procédé consiste à effectuer la réaction du matériau hôte avec des ions ferriques dans une solution d'attaque dans des conditions permettant de provoquer l'oxydation d'au moins une partie du matériau de base par les ions ferriques, ce qui déclenche la conversion des ions ferriques en ions ferreux, et à oxyder ces ions ferreux au moyen d'un mélange d'oxydation de SO¿2? et d'oxygène afin d'obtenir les ions ferriques servant à effectuer une réaction ultérieure avec le matériau.

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