C - Chemistry – Metallurgy – 22 – B
Patent
C - Chemistry, Metallurgy
22
B
C22B 15/00 (2006.01) C22B 1/00 (2006.01) C22B 1/06 (2006.01) C22B 3/18 (2006.01)
Patent
CA 2389504
The invention relates to a method for the extraction of metals from copper sulphide and/or copper iron sulphide ores with microbiological- and chemical- type leaching steps for dissolution of the metals, which comprises the following steps: 1) In a conversion step, prior to the leaching steps, the ores are converted to covellite, pyrites and admixed sulphides by the addition of sulphur, and 2) copper and other metals, noble metals and rare earths contained in the reaction product are extracted.
L'invention concerne un procédé d'extraction de métaux à partir de minerais contenant du sulfure de cuivre et/ou du sulfure de cuivre et de fer, procédé qui comprend des étapes de lixiviation du type microbiologique et du type chimique pour la dissolution des métaux et dans lequel: 1. dans une étape de conversion précédant les étapes de lixiviation, les minerais sont, par addition de soufre et d'additifs, convertis en covelline, pyrite et en sulfure accessoire; et 2. On extrait le cuivre et d'autres métaux, métaux nobles et terres rares contenus dans le produit réactionnel.
Beckmann Alexander
Ogilvy Renault Llp/s.e.n.c.r.l.,s.r.l.
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