C - Chemistry – Metallurgy – 22 – B
Patent
C - Chemistry, Metallurgy
22
B
C22B 3/08 (2006.01) C22B 3/06 (2006.01) C22B 3/26 (2006.01) C22B 3/38 (2006.01) C22B 15/00 (2006.01)
Patent
CA 2221781
A process for the extraction of a metal from an ore or concentrate comprises subjecting the ore or concentrate to pressure oxidation in the presence of oxygen and an acidic solution containing halogen ions and a source of bisulphate or sulphate ions, such as H2SO4. The metals which can be extracted by the process comprises copper, as well as non- cuprous metals, such as zinc, and precious metals, such as gold and silver.
L'invention concerne un procédé pour extraire un métal d'un minerai ou d'un produit concentré. Ce procédé consiste à soumettre le minerai ou le concentrat à une oxydation sous haute pression en présence d'oxygène et d'une solution acide contenant des ions d'halogène et une source de sulfate d'hydrogène ou de sulfate, comme du H2SO4. Parmi les métaux que l'on peut extraire par ce procédé, il convient de mentionner le cuivre, ainsi que des métaux non cuivreux, tel que le zinc, et des métaux précieux comme l'or et l'argent.
Borden Ladner Gervais Llp
Cesl Limited
Cominco Engineering Services Ltd.
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