Method of operating a blast furnace with plasma heating

Details Method of operating a blast furnace with plasma heating Method of operating a blast furnace with plasma heating

1985-11-21

1987-11-17

Andrews, Melvyn J.

Specialized metallurgical processes, compositions for use therei

Processes

Electrothermic processes

266 82, C21B 552

Patent

active

047071834

ABSTRACT:
A blast furnace, especially for the production of hot metal for the steel industry and operated with a normal charge above the tuyere blast zone, has its hot metal production increased at least temporarily by a lateral injection of metal oxides into the zone. A supply of the thermal energy requirements for the smelting reduction of these metal oxides by electrically operated plasma torches, and the compensation of a overoxygenation resulting from the oxygen contribution of these metal oxides by the introduction of nitrogen.

REFERENCES:
patent: 1917642 (1933-07-01), Furnas
patent: 3955963 (1976-05-01), Ponghis et al.
patent: 4340420 (1982-07-01), Santen et al.
patent: 4455165 (1984-06-01), Santen et al.
patent: 4514219 (1985-04-01), Martin
patent: 4526612 (1985-07-01), Eriksson et al.

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