Iron or steelmaking process

Details Iron or steelmaking process Iron or steelmaking process

C - Chemistry, Metallurgy

21

C

39/23, 39/33

C21C 7/00 (2006.01) C21B 13/08 (2006.01) F27B 7/20 (2006.01) F27B 7/33 (2006.01) F27B 7/02 (2006.01) F27B 7/32 (2006.01)

Patent

CA 1057953

ABSTRACT OF THE DISCLOSURE An iron or steelmaking process is described wherein iron or steelmaking materials are injected into one end of a generally horizontal rotary furnace rotatable at such a speed that the furnace contents are maintained around the interior by centrifugal force in an outer liquid metal layer and an inner slag layer spread on the liquid metal. The process comprises intermittently reducing the speed of rotation of the furnace to reduce the centrifugal force and permit liquid metal to be discharged from that end of the furnace remote from the input and in preference to the slag. Various means are described for accentuating the preferential discharge of liquid metal.

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