Process for producing molten pig iron or molten steel pre-produc

Details Process for producing molten pig iron or molten steel pre-produc Process for producing molten pig iron or molten steel pre-produc

1995-06-05

1996-07-09

Andrews, Melvyn

Specialized metallurgical processes, compositions for use therei

Processes

Producing or treating free metal

C21B 1314

Patent

active

055340466

ABSTRACT:
A process for producing molten pig iron or molten steel pre-products from charging substances formed of iron ores and fluxes and at least partially comprising fines, wherein the charging substances are directly reduced to sponge iron in at least one reduction zone by the fluidized layer process, the sponge iron is melted in a melting-gasifying zone under supply of carbon carriers and oxygen-containing gas, and a CO and H.sub.2 -containing reducing gas is produced, which is injected into the reduction zone, is reacted there, is withdrawn as an export gas and is supplied to a consumer, is to be improved with a view to rendering feasible the use of fine ore in an economic manner. This is effected in that

REFERENCES:
patent: 4978387 (1990-12-01), Kepplinger
patent: 5082251 (1992-01-01), Whipp

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