Apparatus for producing molten pig iron by direct reduction

Details Apparatus for producing molten pig iron by direct reduction Apparatus for producing molten pig iron by direct reduction

C - Chemistry, Metallurgy

21

B

C21B 11/00 (2006.01) C21B 13/00 (2006.01) C21C 5/56 (2006.01) F27D 13/00 (2006.01)

Patent

CA 2172898

Apparatus for producing molten pig iron by direct reduction of iron ore, comprises (i) a metallurgical vessel, in which with supply of coal and oxygen the iron ore undergoes a final reduction with production of a process gas and said process gas undergoes a partial post-combustion, and (ii) a melting cyclone in which the iron ore undergoes a pre-reduction and is melted. To improve the control of the thermal flows and to reduce maintenance, the vessel has (a) a top part, in which the partial post- combustion of said process gas takes place, in the form of a pressure-resistant hood having an interior wall comprising cooling water pipes, and (b) a bottom part for accommodating an iron bath having a slag layer in which said final reduction of said iron ore takes place, the bottom part having an internal refractory lining and means for water cooling the internal refractory lining.

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