Steelmaking additive composition

Details Steelmaking additive composition Steelmaking additive composition

1983-11-28

1984-12-25

Rosenberg, Peter D.

Specialized metallurgical processes, compositions for use therei

Processes

Electrothermic processes

75 53, 75257, C21C 702

Patent

active

044901739

ABSTRACT:
Steelmaking additive compositions and process of use, said compositions providing flux solubilization, desulfurization and/or removal of inclusions. The compositions comprise from about 25 to 50 wt % lime and about 75 to 50 wt % of a compound selected from the group consisting of bauxite and mixtures of calcium aluminate and bauxite; alternatively, the compositions comprise from about 40 to 70 wt % CaO, 20 to 50 wt % Al.sub.2 O.sub.3 from bauxite or mixtures of calcium aluminate and bauxite and 0 to 30 wt % MgO. The process consists of the addition, in the course of steelmaking utilizing electric furnace, basic oxygen furnace, AOD furnace or open hearth furnace means, of the steelmaking additive compositions of the invention to either the furnace, ladle and/or tundish.

REFERENCES:
patent: 4364771 (1982-12-01), Cordier
patent: 4374664 (1983-02-01), Mitsuo

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