Process for reduction of impurities content of hot metal

Details Process for reduction of impurities content of hot metal Process for reduction of impurities content of hot metal

1986-12-08

1988-05-03

Rosenberg, Peter D.

Specialized metallurgical processes, compositions for use therei

Processes

Electrothermic processes

75 53, C21C 700

Patent

active

047417714

ABSTRACT:
A continuous process for the reduction of impurities in hot metal from a blast furnace, in which the hot metal is tapped into runners and then discharged into a torpedo car. The silicon and phosphorus contents are measured; and if silicon is greater than 0.25% by weight, then a silicon reduction agent is added to the tapped metal at the upstream end of the runners. An appropriate amount of phosphorus reduction agent is added to the hot metal at the downstream end of the runners as the hot metal falls into the torpedo car.

REFERENCES:
patent: 2049004 (1936-07-01), Flannery
patent: 3396010 (1968-08-01), Gould
patent: 3929464 (1975-12-01), Todd
patent: 3944195 (1976-03-01), Buell
patent: 3998625 (1976-12-01), Koros

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