Treatment of oxide-containing dusts

Details Treatment of oxide-containing dusts Treatment of oxide-containing dusts

1993-02-19

1994-11-29

Rosenberg, Peter D.

Specialized metallurgical processes, compositions for use therei

Processes

Electrothermic processes

373 18, 373 22, H05B 712, C21C 552, F27B 1406

Patent

active

053686276

ABSTRACT:
An arc is drawn between a movable electrode (E) (preferably graphite), and a fixed electrode (7) in a furnace when smelting metal oxides using a plasma. Shielding gas, e.g. N. is introduced into plenum (P) about the movable electrode (E) to prevent metal vapor from settling on the inner lining (3;9) of the furnace (1). The movable electrode (E) may be connected to a mast (30) on the furnace roof (4) to align that electrode (E) in its path through a hole (10) in the roof (4) into the furnace chamber (C).

REFERENCES:
patent: 3834895 (1974-09-01), Cachat
patent: 3868987 (1975-03-01), Galey

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