Operating a blast furnace with the injection of hot reducing gas

Details Operating a blast furnace with the injection of hot reducing gas Operating a blast furnace with the injection of hot reducing gas

1983-09-06

1985-06-04

Andrews, Melvyn J.

Specialized metallurgical processes, compositions for use therei

Processes

Electrothermic processes

C21B 506

Patent

active

045212465

ABSTRACT:
Hot reducing gases, mainly containing CO, H.sub.2, and optionally N.sub.2, as well as smaller quantities of H.sub.2 O and CO.sub.2, are injected through some of the tuyeres. Hot air, hot superoxygenated air, recycled gas, or combustion vapor containing sufficient CO.sub.2 is injected through the other tuyeres.

REFERENCES:
patent: 3460934 (1969-08-01), Kelmar
patent: 3764300 (1973-10-01), Wenzel et al.
patent: 4072502 (1978-02-01), Santen et al.
Dean, E. R., Blast Furnace and Steel Plant For May 1961, pp. 417-422.

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