Method of producing iron and steel from iron ore

Details Method of producing iron and steel from iron ore Method of producing iron and steel from iron ore

1974-05-06

1976-04-20

Andrews, M. J.

Specialized metallurgical processes, compositions for use therei

Processes

Electrothermic processes

C21B 506

Patent

active

039516440

ABSTRACT:
The present invention relates to an improved method of producing molten iron and steel from iron ore wherein the iron ore is charged to a shaft furnace along with coke and limestone and the mixture is blasted with a heated gas so that the iron ore is reduced to pig iron. By the present invention, at least a portion of the furnace residue gas stream containing carbon monoxide is oxidized so that a heated gas stream is produced and oxygen is combined therewith. The resulting heated oxygen enriched gas stream is recycled into the furnace as blast gas.

REFERENCES:
patent: 3301661 (1967-01-01), McGlynn et al.

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