Improved thiosulphate leach process

Details Improved thiosulphate leach process Improved thiosulphate leach process

C - Chemistry, Metallurgy

22

B

C22B 3/04 (2006.01) C22B 11/00 (2006.01)

Patent

CA 2536138

An improved thiosulphate leach process for the recovery of gold from ores and other gold-bearing materials, characterised in that the leach solution comprises thiosulphate, thiourea or a reagent chemically related thereto, and an oxidant that does not oxidise thiosulphate, the process producing a pregnant leach solution from which gold may be recovered.

La présente invention a trait à un procédé amélioré de lixiviation de thiosulfate pour la récupération de l'or à partir de minerais et d'autres matières contenant de l'or, caractérisé en ce que la solution de lixiviation comporte du thiosulfate, de la thiourée ou un réactif en association chimique avec ceux-ci, et un oxydant qui n'effectue pas l'oxydation de thiosulfate, le procédé produisant une liqueur mère de lixiviation à partir de laquelle de l'or peut être récupéré.

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