Treatment of oxide-containing dusts

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

C - Chemistry, Metallurgy

22

B

C22B 7/02 (2006.01) C21C 5/00 (2006.01) C21C 5/52 (2006.01) C22B 4/00 (2006.01) F27B 3/08 (2006.01) F27B 3/10 (2006.01) F27B 14/06 (2006.01) H05B 7/101 (2006.01) H05B 7/12 (2006.01) H05H 1/34 (2006.01) F27D 99/00 (2010.01) F27D 23/00 (2006.01)

Patent

CA 2089755

2089755 9203896 PCTABS00011 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 vapour 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).

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