Method for recovering the metal content of complex sulphidic...

Details Method for recovering the metal content of complex sulphidic... Method for recovering the metal content of complex sulphidic...

C - Chemistry, Metallurgy

22

B

53/351

C22B 5/02 (2006.01) C22B 5/12 (2006.01)

Patent

CA 1188108

A B S T R A C T The metal content of complex sulphidic metal raw material is recovered therefrom by means of an autogenous flame-smelting process, preferably carried out in a vortex, with an oxygen-containing gas. The raw mate- rials are smelted in a furnace in the presence of an excess of oxygen and together with an addition of an acid slag former, such as silica, to form a melt which is rich in metal-oxide silicate and poor in sul- phur. Any metal phase formed in the furnace is separated from the silicate phase, and non-iron metals present in the silicate phase are recovered therefrom by selective reduction.

390710

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