Method for upgrading copper concentrate

Details Method for upgrading copper concentrate Method for upgrading copper concentrate

C - Chemistry, Metallurgy

22

B

C22B 15/00 (2006.01) C22B 3/08 (2006.01) C22B 19/00 (2006.01)

Patent

CA 2697187

The invention relates to a method for the preparation of a copper concentrate suitable for pyrometallurgical treatment from a concentrate in which zinc is present as an impurity. In accordance with the method, zinc is leached from the concentrate with a solution containing sulphuric acid in oxidising conditions at atmospheric temperature and pressure. At the end of the leach, the conditions are regulated to be such that any copper that may have dissolved will be precipitated.

L'invention concerne un procédé de préparation d'un concentré de cuivre pouvant être destiné à un traitement pyrométallurgique, à partir d'un concentré dans lequel du zinc est présent sous forme d'impureté. Selon ce procédé, le zinc est lixivié à partir du concentré avec une solution contenant de l'acide sulfurique dans des conditions d'oxydation à température et pression atmosphériques. À la fin de la lixiviation, les conditions sont régulées de façon que le cuivre dissous soit précipité.

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