Method for pyrometallurgical smelting of copper

Details Method for pyrometallurgical smelting of copper Method for pyrometallurgical smelting of copper

1995-12-06

1997-09-02

Andrews, Melvyn

Specialized metallurgical processes, compositions for use therei

Processes

Free metal or alloy reductant contains magnesium

75640, C22B 1500

Patent

active

056627300

ABSTRACT:
In a flash smelting method of copper, a carbonaceous material, whose grain size is under 100 um and is in a proportion of 65% or more, and whose grain size is from 44 to 100 .mu.m and is in a proportion of 25% or more, and which has 80% or more of a fixed carbon content, is charged into a reaction shaft of a flash smelting furnace. It is possible to prevent the excessive formation and excessive reduction of Fe.sub.3 O.sub.4 in the slag. Copper loss, erosion of refractories and boiler trouble can be prevented.

REFERENCES:
patent: 4857104 (1989-08-01), Victorovich et al.

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