Birch, Stewart, Kolasch & Birch, LLP
Process of leaching gold
A process of leaching gold can be inexpensively and efficiently carried out from a mixture containing sulfur and gold, typically from the material containing sulfur and gold that is an intermediate product recovered by the flotation method in the hydrometallurgical method. Specifically, the mixture containing elemental sulfur and gold and an aqueous solution of hydroxide of one or more of metals of alkali metals and alkaline earth metals are combined, the hydroxides reacting with elemental sulfur to form thiosulfate of alkali and/or alkaline earth metal, and the gold thereby being leached by reaction with the thiosulfate.
JX NIPPON MINING & METALS CORPORATION
Y C C C B
Y02P C22B C22B C22B B03D
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Kazuhiro Masaki Yoshifumi Koji
Hatano Sano Abe Katsukawa