Processing of nickel sulphide ore or concentrates with...

C - Chemistry – Metallurgy – 22 – B

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C22B 23/00 (2006.01) C22B 15/00 (2006.01) C22B 19/00 (2006.01)

Patent

CA 2624609

The present invention relates to a new hydrometallurgical process for recovering nickel from nickel bearing raw materials, such as sulphide flotation concentrates. In general, the process involves the oxidative atmospheric pressure leaching of nickel sulphide concentrates using a sodium chloride/hydrochloric acid based leach media.

La présente invention concerne un nouveau procédé hydrométallurgique de récupération de nickel à partir de matériaux bruts contenant du nickel, tels que des concentrés de flottation de sulfure. En général, le procédé comprend la lixiviation oxydative sous pression atmosphérique de concentrés de sulfure de nickel en utilisant un milieu de lixiviation à base de chlorure de sodium/d'acide chlorhydrique.

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