Method of producing molten pig iron or steel pre-products from p

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

1986-03-12

1987-11-24

Andrews, Melvyn J.

Specialized metallurgical processes, compositions for use therei

Processes

Electrothermic processes

75 38, 75 43, 48 92, C21B 1100

Patent

active

047087366

ABSTRACT:
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 gasifier, 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.

REFERENCES:
patent: 3948640 (1976-04-01), Elvander et al.
patent: 4564389 (1986-01-01), Yamaoka et al.

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