Process for reducing molten furnace slags by carbon injection

Details Process for reducing molten furnace slags by carbon injection Process for reducing molten furnace slags by carbon injection

1977-11-07

1978-08-29

Andrews, M. J.

Specialized metallurgical processes, compositions for use therei

Processes

Electrothermic processes

75 40, 75 72, 75 82, C21B 304, C22B 704

Patent

active

041101073

ABSTRACT:
A process is provided for recovering metals from metal-containing slags such as iron-copper slags from copper smelting furnaces and iron-nickel slags produced in smelting nickel-bearing ores. The molten slag is fed to an electric-arc furnace wherein a molten metal bath is formed. A carbon injection unit, including an injector tube which is inserted into the furnace, is used to inject carbon into the bottom of the molten metal bath. A flux, such as CaO, is also fed, as needed, to the bath. After reduction, the metal product is tapped from the furnace.

REFERENCES:
patent: 1313274 (1919-08-01), DeBarros
patent: 1822588 (1931-09-01), Fowler et al.
patent: 2164483 (1939-07-01), Watson et al.
patent: 2762701 (1956-09-01), Crego et al.

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