Steel making process

Details Steel making process Steel making process

1980-05-29

1981-09-22

Rosenberg, P. D.

Specialized metallurgical processes, compositions for use therei

Processes

Electrothermic processes

75 59, 75 60, C21C 532, C21C 534

Patent

active

042908027

ABSTRACT:
An oxygen top-blowing steelmaking process is disclosed, which comprises preparing a molten metal suitable for producing steel in a basic oxygen furnace, carrying out the top-blowing and bottom-blowing and then tapping the resulting molten steel. The bottom-blowing is carried out at least partly during the period of time from beginning of blowing to the tapping of the melt and a powder of a slag-forming agent, such as quick lime, limestone, is introduced into the molten metal together with the top-blowing of oxygen jet injected through an oxygen lance so as to form an effective slag at an early stage of refining.

REFERENCES:
patent: 2991173 (1961-07-01), Trentini
patent: 3854932 (1974-12-01), Bishop
patent: 4089677 (1978-05-01), Spenceley

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