Method for producing molten pig iron or steel pre-products in a

Details Method for producing molten pig iron or steel pre-products in a Method for producing molten pig iron or steel pre-products in a

1983-12-20

1986-05-13

Andrews, Melvyn J.

Specialized metallurgical processes, compositions for use therei

Processes

Electrothermic processes

C21B 1108

Patent

active

045884374

ABSTRACT:
There is disclosed a method and a melt-down gasifier for producing molten pig iron or steel pre-products and reduction gas. A first fluidized-bed zone is formed by coke particles, with a heavy motion of the particles, above a first blow-in plane by the addition of coal and by blowing in oxygen-containing gas. Iron sponge particles and/or pre-reduced iron ore particles with a substantial portion of particle sizes of more than 3 mm are added to the first fluidized-bed zone from above. A melt-down gasifier for carrying out the method is formed by a refractorily lined vessel having openings for the addition of coal and ferrous material, openings for the emergence of the reduction gases produced, and openings for tapping the metal melt and the slag. Pipes or nozzles enter into the meltdown gasifier above the slag level at at least two different heights.

REFERENCES:
patent: 2321310 (1943-06-01), Moore
patent: 2978315 (1961-04-01), Schenck et al.
patent: 3948640 (1976-04-01), Elvander et al.
patent: 4317677 (1982-03-01), Weber et al.
patent: 4396421 (1983-08-01), Stift et al.
Ullmanns Encyklopadie der technischen Chemie, by Dr. E. Bartholome et al., Copyright 1973.

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