Specialized metallurgical processes – compositions for use therei – Processes – Electrothermic processes
Patent
1976-04-09
1978-02-14
Satterfield, Walter R.
Specialized metallurgical processes, compositions for use therei
Processes
Electrothermic processes
75 23, 75 76, 266173, C22B 1500
Patent
active
040736458
ABSTRACT:
A process of smelting a sulphidic copper ore concentrate comprising introducing and partially roasting the sulphidic copper ore concentrate in a whirling layer roasting furnace, separating hot roasting gases from the roasting furnace, mixing enrichment oxygen with the roasting gases, joining and mixing into a smelting flame combustible gaseous fuel and the oxygen enriched separated hot roasting gases, directing the smelting flame from one side of a reverberatory furnace over the top of a copper matte, continuously passing the partially roasted concentrate from the roasting furnace through the heating zone in the reverberatory furnace and there smelting the partially roasted ore and heating the copper matte by the heat from the flame, generating in the heating zone by virtue of the flame an oxidizing atmosphere of such high temperature and oxygen content that sulphur from the molten sulphidic copper is converted into an exhaust gas of high SO.sub.2 content, and exhausting the exhaust gas from the opposite side of the reverberatory furnace from the introduction of the flame.
REFERENCES:
patent: 2668107 (1954-02-01), Gordon et al.
patent: 3351462 (1967-11-01), Arentzen et al.
patent: 3674463 (1972-07-01), Yannopoulos
patent: 3892560 (1975-07-01), Nermes et al.
Fritsch Walter
Melcher Gerhard
Klockner-Humboldt-Deutz Aktiengesellschaft
Satterfield Walter R.
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