C - Chemistry – Metallurgy – 22 – B
Patent
C - Chemistry, Metallurgy
22
B
C22B 3/08 (2006.01) C22B 3/20 (2006.01) C22B 7/00 (2006.01) C22B 7/04 (2006.01) C22B 15/00 (2006.01) C22B 23/00 (2006.01)
Patent
CA 2162626
The invention relates to a process for leaching nickel and copper from nickel-copper matte formed in pyrometallurgical nickel production by means of a multi- stage process. It is essential that the leaching of nickel takes placed in at least two stages under conditions in which free sulfuric acid is essentially absent, and that, in these stages, the leaching of the nickel content of the matte is mainly carried out with copper as the oxidizer.
Fugleberg Sigmund
Holohan Terry
Hultholm Stig-Erik
G. Ronald Bell & Associates
Outokumpu Engineering Contractors Oy
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