Injection of hot reducing gases into a blast furnace

Details Injection of hot reducing gases into a blast furnace Injection of hot reducing gases into a blast furnace

C - Chemistry, Metallurgy

21

C

53/43

C21C 5/32 (2006.01) C21B 5/00 (2006.01)

Patent

CA 1185434

ABSTRACT Reducing gases heated to a temperature of 1500 to 2800°C are injected into the main tuyeres of a blast furnace, these gases mainly containing CO, H2, and possibly N2, and smaller amounts of CO2 and H2O. The reducing gases are obtained from a solid fuel, preferably dried and finely crushed, injected into a reactor in which it is gasified in contact with an oxidising agent such as air, superoxygenated air, or even recycled throat gases having a sufficient CO2 content.

398050

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