Metallothermal process for reducing metal oxides

Details Metallothermal process for reducing metal oxides Metallothermal process for reducing metal oxides

1982-05-11

1983-12-06

Rosenberg, P. D.

Specialized metallurgical processes, compositions for use therei

Processes

Electrothermic processes

75 11, 75 27, C22B 400

Patent

active

044191278

ABSTRACT:
In order to produce metals or ferroalloys, a mixture of metal oxides, reducing agents and possibly iron is ignited, to produce a metal melt as well as a slag melt. After the burn-out the still liquid slag is reacted with a suitable means, preferably calcium fluoride to increase its electrical conductivity. The liquid slag is then heated and simultaneously ignited by alternating current applied to water-cooled graphite electrodes. Over an emperically determined time span, the melt is reacted with an additional reducing agent, until substantially complete transformation of the metal oxide remaining in the slag and migration of the resulting metal into the metal phase.

REFERENCES:
patent: 4083715 (1978-04-01), Langhammer

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