Specialized metallurgical processes – compositions for use therei – Processes – Producing or treating free metal
Patent
1988-08-22
1990-05-15
Andrews, Melvyn J.
Specialized metallurgical processes, compositions for use therei
Processes
Producing or treating free metal
C21B 1100
Patent
active
049254898
ABSTRACT:
For the purpose of melting scrap iron, pelletized sponge iron in reduced condition, solid pig iron or the like, there is introduced into the melting heat from below a charge-accepting receptacle by means of burners the carbon content within the molten bath is adjusted by a sub-stoichiometric combustion of hydrocarbon. Addition of any coal to the charged material is avoided. By reducing the oxygen flow, in particular by performing the combustion with approximately 0.9-times of the stoichiometric amount of oxygen, and by optionally adding slag formers, the aggressivity of the slag in relation to the furance lining is simultaneously reduced.
REFERENCES:
patent: 2546936 (1951-03-01), Vignos
patent: 3772000 (1973-11-01), Hyde et al.
patent: 3982926 (1976-09-01), Geck et al.
patent: 4001008 (1977-01-01), Stift
patent: 4203761 (1980-05-01), Rose
patent: 4556418 (1985-12-01), Syska
Koller Otto
Mitter Gerhard
von Bogdandy Ludwig
Andrews Melvyn J.
Voest-Alpine Stahl Donawitz Gesellschaft m.b.H.
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