C - Chemistry – Metallurgy – 22 – B
Patent
C - Chemistry, Metallurgy
22
B
C22B 3/14 (2006.01)
Patent
CA 2693217
In accordance with the present invention there is provided a method for leaching one or more target metals from an ore, the method comprising the method steps of: curing the ore to be leached through the application of an aqueous solution of a curing agent, producing a cured ore; leaching the cured ore at atmospheric pressure through the application of an ammonium carbonate solution containing free ammonia, producing a pregnant leach solution; and passing the pregnant leach solution to a means for metals recovery.
Conformément à la présente invention, il est proposé un procédé pour lixivier un ou plusieurs métaux cibles à partir d'un minerai. Le procédé comprend les étapes de procédé consistant à: faire durcir le minerai devant être lixivié par l'application d'une solution aqueuse d'un agent de durcissement, produisant un minerai durci; lixivier le minerai durci à la pression atmosphérique par l'application d'une solution de carbonate d'ammonium contenant de l'ammoniaque libre, produisant une liqueur-mère de lixiviation; et faire passer la liqueur-mère de lixiviation dans un moyen pour récupérer les métaux.
Johnston Garry Mervyn
Sutcliffe Matthew Leslie
Welham Nicholas James
Mbm Intellectual Property Law Llp
Metaleach Limited
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