Operating a blast furnace using untreated top gas

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

C - Chemistry, Metallurgy

21

B

C21B 5/00 (2006.01) C21B 5/06 (2006.01)

Patent

CA 2094199

ABSTRACT OF THE DISCLOSURE 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 900-1000°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 furnacebosh at a point above which the coke in the furnance is not reactive. 18

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