C - Chemistry – Metallurgy – 22 – B
Patent
C - Chemistry, Metallurgy
22
B
C22B 3/20 (2006.01) C22B 1/00 (2006.01) C22B 1/04 (2006.01) C22B 3/04 (2006.01) C22B 3/10 (2006.01)
Patent
CA 2448999
A method for treating a polymetallic sulfide ore containing gold and/or silver, and further containing base metals selected from the group consisting of iron, aluminum, chromium, titanium, copper, zinc, lead, nickel, cobalt, mercury, tin, and mixtures thereof, is disclosed. The method comprises the steps of grinding the polymetallic sulfide ore to produce granules, oxidizing the granules to produce oxidized granules, and chloride leaching the granules using a brine solution including dissolved halogens, as well as chloride and bromide salts.
Divulgation d'une méthode de traitement d'un minerai de sulfure polymétallique contenant de l'or et/ou de l'argent, et contenant aussi des métaux de base choisis parmi le groupe constitué du fer, de l'aluminium, du chrome, du titane, du cuivre, du zinc, du plomb, du nickel, du cobalt, du mercure, de l'étain ainsi que des mélanges de ces métaux. La méthode comprend les étapes de broyage du sulfure polymétallique pour produire des granules, d'oxydation des granules pour produire des granules oxydés, et de lixiviation au chlorure des granules au moyen d'une saumure contenant des halogènes dissous ainsi que des chlorures et des bromures.
Goudreau Gage Dubuc
Nichromet Extraction Inc.
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