Operating a blast furnace using dried top gas

Details Operating a blast furnace using dried top gas Operating a blast furnace using dried top gas

1991-11-29

1993-08-10

Andrews, Melvyn J.

Specialized metallurgical processes, compositions for use therei

Processes

Producing or treating free metal

75468, 266156, C21B 506

Patent

active

052344908

ABSTRACT:
Method of producing pig iron in a blast furnace. At least a portion of a top gas from a blast furnace is collected, dried and then heated to an elevated temperature preferably in the range of 900.degree.-1000.degree. C. An oxygen-enriched hydrogenaceous fuel is introduced into the furnace bosh and the heated dried top gas is introduced into the lower half of the furnace stack above the furnace bosh at a point above which the coke in the furnace is not reactive.

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A. Poos, The Future of the Blast Furnace, 1990, pp. 395-404, 6th Inst. I & S Congress.
D. M. Kundrat et al, Injections in the Iron Blast Furnace: A Graphics Study by Means of the Rist Operating Diagram, 1991, pp. 363-383, Metallurgical Transactions B.

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