Method of recovering copper and furnace for carrying out the met

Details Method of recovering copper and furnace for carrying out the met Method of recovering copper and furnace for carrying out the met

1987-07-10

1988-11-01

Rosenberg, Peter D.

Specialized metallurgical processes, compositions for use therei

Processes

Electrothermic processes

75 72, C22B 400, C21C 552

Patent

active

047817550

ABSTRACT:
A method of recovering copper from oxidic and/or silicate copper ores by way of pyrometallurgy. With this method, the copper ores are melted in a reaction zone heated by plasma jets and maintained at a temperature of at least 1,500.degree. C. At this high temperature, the thermal decomposition of the oxidic or silicate copper compounds occurs, whereas no such decomposition of accompanying metal oxides takes place. The furnace used to perform this method includes a refractory lining of carbonless material. The reaction furnace and, thus, the reaction zone are sealed relative to the atmosphere to prevent oxygen from entering thereinto. An inert gas is used as plasma gas.

REFERENCES:
patent: 3594153 (1971-07-01), DeCorso
patent: 4414673 (1983-11-01), Lugscheider
patent: 4423512 (1983-12-01), Lugscheider
patent: 4504307 (1985-03-01), Lugscheider

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