Method of producing steel by the LD process

Details Method of producing steel by the LD process Method of producing steel by the LD process

1983-05-18

1984-08-14

Rutledge, L. Dewayne

Specialized metallurgical processes, compositions for use therei

Processes

Electrothermic processes

C21C 532

Patent

active

044655142

ABSTRACT:
A method of producing steel by the LD process using a metallurgical vessel by blowing gas through an oxygen lance onto the top of the molten metal bath in the vessel for a period of time and during the final portion of the period blowing nitrogen directly into the metal bath through a gas-transmitting wall element. The duration of the final portion is from 0 to 2 minutes. The rate of gas supply through the wall element during the final portion is 5 to 8 Nm.sup.3 /h per ton of metal in the vessel.

REFERENCES:
patent: 3252790 (1966-05-01), Krivsky
patent: 4168158 (1979-09-01), Iwaoka et al.
patent: 4210442 (1980-06-01), Lewis et al.

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