Direct smelting of zinc concentrates and residues

Details Direct smelting of zinc concentrates and residues Direct smelting of zinc concentrates and residues

C - Chemistry, Metallurgy

22

B

C22B 19/04 (2006.01) C22B 5/16 (2006.01)

Patent

CA 2151791

The present invention is concerned with a process for the direct smelting of zinc containing materials. The process includes volatilizing zinc from zinc-containing materials into a gas phase, while sulphur is fixed as iron sulphide in a Fe-S-O matte. Thereafter, zinc is recovered in metallic form with a suitable condenser apparatus from a zinc laden gas consisting of Zn(g), CO, CO2 and N2. Other metals like silver, cadmium, mercury and lead may also be recovered in this manner.

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