Method of smelting copper sulfide concentrate

Details Method of smelting copper sulfide concentrate Method of smelting copper sulfide concentrate

2005-01-18

2005-01-18

Andrews, Melvyn (Department: 1742)

Specialized metallurgical processes, compositions for use therei

Processes

Producing or treating free metal

C075S641000, C075S643000, C075S645000

Reexamination Certificate

active

06843827

ABSTRACT:
The method for smelting copper sulfide concentrate essentially consisting of the steps of: adding SiO2source material and CaO source material for flux to the copper sulfide concentrate, and subjecting the copper sulfide concentrate to oxidation melting to produce slag and at least one selected from the group of white metal and blister copper, so that at least part of Fe in the copper sulfide concentrate is removed to the slag while at least part of S is removed in the form of SO2, and that copper is concentrated in the form of at least one selected from the group of white metal and blister copper, and wherein the composition of the slag is controlled such that the weight ratio CaO/(SiO2+CaO) is in the ramge of 0.6 to 0.85, while the weight ratio Fe/(FeOx+SiO2+CaO) is in the range of 0.5 to 0.6.

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Patent Abstracts of Japan English translation of JP 2000-063963 Feb. 29, 2000.

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