Method of and apparatus for refining a melt containing solid coo

Details Method of and apparatus for refining a melt containing solid coo Method of and apparatus for refining a melt containing solid coo

1982-11-29

1984-02-28

Rosenberg, Peter D.

Specialized metallurgical processes, compositions for use therei

Processes

Electrothermic processes

75 52, 75 59, 266225, C21C 532

Patent

active

044340052

ABSTRACT:
A method of and an apparatus for the refining of a molten metal overlain by a slag and in which cold solids are introduced, e.g. in the form of metal scrap. According to the invention the heat necessary to melt the scrap and prevent undue cooling of the bath is generated by directing a jet of neutral gas entraining carbon against the surface of the melt perpendicularly thereto at Mach 1.5 to Mach 2.5, while refining oxygen is directed at the surface from jets inclined to the carbon entraining jet and the melt is bottomblown by neutral gas to prevent excessive foaming of the slag.

REFERENCES:
patent: 3854932 (1974-12-01), Bishop
patent: 4089677 (1978-05-01), Spenceley
patent: 4302244 (1981-11-01), Sieckman
patent: 4329171 (1982-05-01), Edgardo
patent: 4358314 (1982-11-01), Normanton

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