Specialized metallurgical processes – compositions for use therei – Processes – Electrothermic processes
Patent
1978-11-17
1980-05-27
Andrews, M. J.
Specialized metallurgical processes, compositions for use therei
Processes
Electrothermic processes
75 69, C22B 1500
Patent
active
042048613
ABSTRACT:
A method of producing blister copper comprising smelting sulphidic copper raw material in a rotary furnace with an inclined rotation axis, in presence of oxygen and slag formers charged simultaneously with the copper raw material. The method comprises discontinuing the oxygen charge when at least 75% of the copper raw material has been charged and treating the obtained matte and slag with a reduction agent and then transferring the matte and the slag together to a holding furnace in which the matte and the slag are separated and transferring the matte in the holding furnace to a converter where it is converted to blister copper.
REFERENCES:
patent: 3615362 (1971-10-01), Warner et al.
patent: 4006010 (1977-02-01), Rajcevic et al.
Eriksson Bengt S.
Petersson Stig A.
Andrews M. J.
Boliden Aktiebolag
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