Pyrometallurgical smelting method of copper

Details Pyrometallurgical smelting method of copper Pyrometallurgical smelting method of copper

1997-05-27

1999-06-15

Andrews, Melvyn

Specialized metallurgical processes, compositions for use therei

Processes

Free metal or alloy reductant contains magnesium

C22B 1500

Patent

active

059124016

ABSTRACT:
In a pyrometallurgical smelting method of copper, the copper-ore and auxiliary fuel, such as carbonaceous material, is blown through an ore-concentrate burner into a reaction shaft. In an improved pyrometallurgical smelting of copper, the carbonaceous material is used to reduce the Fe.sub.3 O.sub.4 contained in the slag. The present invention provides an improved method for reducing the Fe.sub.3 O.sub.4 even in a case at a decreased amount of auxiliary fuel is to be decreased. The carbonaceous material is blown into a lower portion of the reaction shaft where the oxygen partial pressure is low.

REFERENCES:
patent: 4857104 (1989-08-01), Victorovich et al.
patent: 5662730 (1997-09-01), Akagi et al.

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