Production of carbon steel and low-alloy steel with bottom blowi

Details Production of carbon steel and low-alloy steel with bottom blowi Production of carbon steel and low-alloy steel with bottom blowi

1980-05-09

1981-07-28

Rosenberg, P. D.

Specialized metallurgical processes, compositions for use therei

Processes

Electrothermic processes

75 59, 75 51, 75 52, C21C 532, C21C 534

Patent

active

042808383

ABSTRACT:
A method of producing carbon steel and low-alloy steel in a basic oxygen furnace is disclosed, in which a blow of the bottom-blowing gas predominantly comprised of carbon dioxide is introduced into a molten metal through at least one nozzle provided in the bottom or side wall of said basic oxygen furnace at least partly during the period of time from the beginning of blowing to the tapping of the melt, and the flow rate of the bottom-blowing gas is 1/200 - 9/100 the rate of oxygen impinged upon the melt through a lance.

REFERENCES:
patent: 3854932 (1974-12-01), Bishop
patent: 3970446 (1976-07-01), Kolb
patent: 3971655 (1976-07-01), Takashima
patent: 4001009 (1977-01-01), Bauer
patent: 4047936 (1977-09-01), Chang
patent: 4089677 (1978-05-01), Spenceley
patent: 4178173 (1979-12-01), Gorges
patent: 4195985 (1980-04-01), Brotzmann

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