Method of operating a blast furnace

Details Method of operating a blast furnace Method of operating a blast furnace

1988-11-22

1990-04-17

Andrews, Melvyn J.

Specialized metallurgical processes, compositions for use therei

Processes

Producing or treating free metal

75466, C21B 506

Patent

active

049177273

ABSTRACT:
According to a method of operating a blast furnace, pure oxygen, pulverized coal, and a temperature control gas which substantially does not contain nitrogen are blown from tuyeres. A preheating gas which substantially does not contain nitrogen is blown from an intermediate shaft level. A blast furnace gas which substantially does not contain nitrogen can be produced from a furnace top.

REFERENCES:
patent: 2337551 (1943-12-01), Hansgirg
patent: 2593257 (1952-04-01), Bradley et al.
patent: 2952533 (1960-09-01), Cuscoleca et al.
patent: 3460934 (1969-08-01), Kelmar
patent: 3814404 (1974-06-01), Claflin

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