Method of producing molten pig iron or steel pre- products...

Details Method of producing molten pig iron or steel pre- products... Method of producing molten pig iron or steel pre- products...

C - Chemistry, Metallurgy

21

B

53/74

C21B 5/00 (2006.01) C21B 11/02 (2006.01) C21B 13/00 (2006.01) C21B 13/02 (2006.01)

Patent

CA 1268633

ABSTRACT OF THE DISCLOSURE: In a method of producing molten pig iron or steel pre- products from particulate ferrous material, as well as of producing reduction gas in a melt-down gasifier by adding coal and by blowing in oxygen-containing gas by means of nozzle pipes penetrating the wall of the melt-down gasi- fier, a fixed bed formed of coke particles, through which the oxygen-containing gas flows and a superposed fluidized bed of coke particles are formed, and the ferrous material is charged onto the fluidized bed. Below the fixed bed through which oxygen-containing gas flows, a fixed bed of coke particles not passed through by gas is provided, and the fluidized bed above the fixed bed passed through by oxygen-containing gas is passed through by a gas free from oxygen or having a low oxygen content.

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