Process for autogenous oxygen smelting of sulphide materials...

Details Process for autogenous oxygen smelting of sulphide materials... Process for autogenous oxygen smelting of sulphide materials...

C - Chemistry, Metallurgy

22

B

53/19

C22B 1/02 (2006.01) C22B 5/02 (2006.01) C22B 5/14 (2006.01) C22B 23/02 (2006.01)

Patent

CA 1185095

ABSTRACT A process is disclosed for autogenous oxygen smelting of sulfide materials which contain base metals. In this process a sulfide material containing base metals is combusted autogenously with an oxygen-containing gas. The improvement resides in roast- ing a portion of the metal sulfide to be smelted, blending the portion of roasted material with further green metal sulfide, and autogenously smelting the resulting blend of roasted and green material with oxygen in a bounded space and in the presence of a flux for iron oxides, whereby to produce a high grade metal pro- duct, a molten silicious slag and a strong sulfur dioxide off-gas.

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