Specialized metallurgical processes – compositions for use therei – Processes – Electrothermic processes
Patent
1974-05-17
1976-10-19
Andrews, M. J.
Specialized metallurgical processes, compositions for use therei
Processes
Electrothermic processes
75 43, 75 60, C21C 700
Patent
active
039868656
ABSTRACT:
A charge consisting of scrap, sponge iron, pellets and the like is admitted into a vertically arranged melting chamber so as to form a column therein. A burner lance generates a flame which melts the column from below so as to produce a melt and an FeO slag. A transportable and tiltable vessel is provided beneath the melting chamber and contains a quantity of pig iron. The melting chamber has an opening at the bottom thereof through which the melt and the slag flow into the vessel to form a mixture containing between 30 and 60 percent by weight of pig iron. Alloying elements and cooling agents are added to the mixture and the resulting molten mass is then at least partially refined in the vessel by blowing with oxygen. During the blowing operation, reaction of the slag and the pig iron occurs and a pourable steel having a desired composition is thereby obtained. The melting of the charge in the melting chamber is carried out without regard to the extent of reaction of the slag and of the pig iron which is required to produce steel of the desired composition.
REFERENCES:
patent: 3231369 (1966-01-01), Gorlich et al.
patent: 3424573 (1969-01-01), De Villiers
Geck Hans Gunther
Langhammer Hans Jurgen
Andrews M. J.
Klockner-Werke AG
Striker Michael J.
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