Method for operating a blast furnace

Details Method for operating a blast furnace Method for operating a blast furnace

1994-06-10

1995-08-01

Rosenberg, Peter D.

Specialized metallurgical processes, compositions for use therei

Processes

Producing or treating free metal

75458, 75459, C21B 500

Patent

active

054377064

ABSTRACT:
In a method for operating a blast furnace, the primary supply of reductant and heat is an hydrogen reducing blast. Oxygen or water vapor is injected into the blast furnace to control temperature. Coke is used to provide appropriate gas channels and carburization. Coke use rate can be reduced to less than 10% of that of conventional blast furnace operation. A conventional blast furnace may be converted to this method with minor modification.

REFERENCES:
patent: 3811869 (1974-05-01), Ponghis
patent: 3955963 (1976-05-01), Ponghis
patent: 4421553 (1983-12-01), Ponghis
Gretz, Korf; and Lyons; Hydrogen in the Steel Industry; 1991, Jun. pp. 691-693.
Lankford, William T, Jr., editor; The Making, Shaping, and Treating of Steel Association of Iron & Steel Engineers, Publisher, 1985.

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