Electric smelting furnace

Details Electric smelting furnace Electric smelting furnace

1977-07-20

1979-04-03

Envall, Jr., R. N.

H05B 7107

Patent

active

041478878

ABSTRACT:
An electric smelting furnace in which a hollow electrode with the wall thickness depending upon the depth of current penetration is disposed vertically within the furnace and spaced by a desirable distance from the furnace bottom, and the top of the hollow electrode is connected to a duct for discharging the furnace off-gases and charging the raw materials into the furnace after they are preheated by the furnace off-bases in the duct and prereduced in the hollow electrode.

REFERENCES:
patent: 1442033 (1923-01-01), Sem et al.
patent: 3524004 (1970-08-01), Van Nostran et al.
patent: 3952138 (1976-04-01), Nanjyo et al.

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