Method for producing a melt iron in an electric furnace

Details Method for producing a melt iron in an electric furnace Method for producing a melt iron in an electric furnace

2007-01-30

2007-01-30

King, Roy (Department: 1742)

Specialized metallurgical processes, compositions for use therei

Processes

Electrothermic processes

Reexamination Certificate

active

10468630

ABSTRACT:
A process for producing liquid smelting iron in an electric arc furnace includes several electrodes, equipped with a hearth, and containing a heel covered with a non-foaming liquid slag. The process further includes the reduction of the metallic fines, in order to form pre-reduced metallic fines containing an excess of free carbon; the hot transfer of the pre-reduced metallic fines within a curtain of inert gas into the heel contained in the electric arc furnace; the agitation of the heel by the injection of gas in such a manner that the formation of crusts is avoided; and the smelting of the pre-reduced metallic fines in the electric arc furnace in order to obtain the liquid smelting iron.

REFERENCES:
patent: 3940551 (1976-02-01), Ling et al.
patent: 4701216 (1987-10-01), Spenceley et al.
patent: 5611838 (1997-03-01), Fritz et al.
patent: 5912916 (1999-06-01), Hendrix
patent: 6582492 (2003-06-01), Roth et al.
patent: WO 00/79012 (2000-12-01), None

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