Hot injection ladle metallurgy

Details Hot injection ladle metallurgy Hot injection ladle metallurgy

1984-01-26

1985-09-17

Rosenberg, Peter D.

Specialized metallurgical processes, compositions for use therei

Processes

Electrothermic processes

75 10R, 75 58, 266216, 266217, C21C 702

Patent

active

045418667

ABSTRACT:
A method of preheating a ladle addition to a melt contained in an enclosed or covered ladle without significant loss of melt temperature. A gas stream is heated in a non-transferred arc electric arc heater to a temperature in excess of that of the melt. The ladle addition is introduced into the heated gas stream in the arc heater downstream of the arc heater wherein its temperature is increased to be about equal to or greater than the melt temperature. The heated gas stream and the entrained ladle addition is then introduced into the ladle. As the gas stream impinges on the melt, the ladle addition separates out and combines with the melt with the resulting off-gas being exhausted from the ladle. The off-gas can be recycled to the arc heater for reuse.

REFERENCES:
patent: 3497196 (1970-02-01), Ruttiger
patent: 4169724 (1979-10-01), Freissmuth
patent: 4342590 (1982-08-01), Luyckx
patent: 4357160 (1982-11-01), von Bogdandy

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