Apparatus and method for the melt reduction of iron oxides

Details Apparatus and method for the melt reduction of iron oxides Apparatus and method for the melt reduction of iron oxides

1974-03-28

1976-02-24

Envall, Jr., R. N.

13 18, 75 11, 13 33, H05B 720

Patent

active

039405516

ABSTRACT:
A tubular electrode contains a feeding tube forming an annular passage between its outside and the inside of the electrode. With the electrode forming a cathode, an arc is formed between it and a carbonaceous iron bath in an enclosed hearth having a gas outlet. Iron oxide material in flowable form is fed through the inner tube to the arc while a non-oxidizing gas is fed via the passage formed between the two tubes, to the arc. The carbonaceous iron bath is made the anode and the action of the current forms an upward bulge in the metal in the arc, gravitationally freeing the bath from any slag at the arc. In this way the iron oxide material is melt reduced, the iron component being continuously added to the bath which may be continuously tapped to provide a supply of crude iron.

REFERENCES:
patent: 3004137 (1961-10-01), Karlovitz
patent: 3101385 (1963-08-01), Robinson
patent: 3105864 (1963-10-01), Robinson
patent: 3432606 (1969-03-01), Kociscin
patent: 3723630 (1973-03-01), Paton et al.
patent: 3789127 (1974-01-01), Bowman

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