Specialized metallurgical processes – compositions for use therei – Processes – Electrothermic processes
Patent
1985-03-21
1986-04-01
Andrews, Melvyn J.
Specialized metallurgical processes, compositions for use therei
Processes
Electrothermic processes
75 38, 75 40, 48 92, C21B 1306
Patent
active
045795886
ABSTRACT:
Method and apparatus for producing liquid iron from iron oxide, wherein the iron oxide is substantially converted to sponge iron by passing reducing gas through it in a reduction column and is then melted in a melt vessel which is in open communication with the reduction column by heat generated by reaction of oxygen-containing gas and carbonaceous material which reaction provides said reducing gas. To improve control of the process, the oxygen-containing gas and the carbonaceous material are respectively substantially pure oxygen and coal powder which are delivered separately into the melt vessel, and the liquid iron bath in the melt vessel is stirred so as at least partly to be kept in motion. By separate control of the oxygen and coal supplies, e.g. the level and/or direction of delivery, and by control of stirring, it is possible to control the ratio of CO and CO.sub.2 in the reducing gas and also the heat output in the melt vessel.
REFERENCES:
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patent: 3853538 (1974-12-01), Nemeth
patent: 4007034 (1977-02-01), Hartwig et al.
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patent: 4316739 (1982-02-01), Beggs et al.
patent: 4396421 (1983-08-01), Stift et al.
patent: 4409023 (1983-10-01), Weber et al.
patent: 4459137 (1984-07-01), Tanoue et al.
Andrews Melvyn J.
Hoogovens Groep B.V.
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