Specialized metallurgical processes – compositions for use therei – Processes – Electrothermic processes
Patent
1976-07-29
1978-02-07
Satterfield, Walter R.
Specialized metallurgical processes, compositions for use therei
Processes
Electrothermic processes
75 7, 75 76, C22B 1500
Patent
active
040725073
ABSTRACT:
A method is provided for producing blister copper from calcined copper-iron concentrates wherein the calcine containing copper ferrite is mixed with particulate carbonaceous reducing agent and charged into a rotary furnace, slag-forming ingredients being also added to slag off iron oxide. The charge is heated to a smelting temperature above the melting point of copper by directing a combusting stream of oxygen and hydrocarbon fuel axially into the rotatable furnace while causing said charge to cascade by rotating the furnace, the ratio of oxygen to the fuel being sufficient to effect substantially complete combustion and provide excess oxygen. Following reduction of the copper to molten blister copper, it is separated from the slag for further purification treatment, the slag being further treated when necessary to recover contained copper therefrom.
REFERENCES:
patent: 3432289 (1969-03-01), Spitz et al.
patent: 3533779 (1970-10-01), Fine et al.
patent: 3622304 (1971-11-01), Khalafalla
patent: 3799764 (1974-03-01), Opie et al.
patent: 4006010 (1977-02-01), Rajcevic et al.
Cusanelli Dominic C.
Opie William R.
Rajcevic Harold P.
Amax Inc.
Kalil Eugene J.
Satterfield Walter R.
Serijan Kasper T.
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