Apparatus for adding solid alloying ingredients to molten metal

Details Apparatus for adding solid alloying ingredients to molten metal Apparatus for adding solid alloying ingredients to molten metal

1986-01-31

1986-12-23

Rosenberg, Peter D.

Metallurgical apparatus

Means for melting or vaporizing metal or treating liquefied...

By means introducing treating material

75 93R, C21C 700

Patent

active

046308016

ABSTRACT:
An elongated, vertical conduit has an upper end, communicating with the bottom opening in an upper container or ladle, and an open lower end disposed above the top surface of a bath of molten metal in a lower container or tundish. A descending stream of molten metal is directed from the conduit into the bath. A shroud encloses the conduit and the descending stream. The pressure within the shroud is lower than the outside pressure and is regulated. A mixture of transport gas and solid, particulate alloying ingredient prone to excessive fuming is injected into the descending stream within the shroud.

REFERENCES:
patent: 3356489 (1967-12-01), Feichtinger
patent: 3547622 (1970-12-01), Hutchinson
patent: 3963224 (1976-06-01), Pollard
patent: 4381102 (1983-04-01), King
patent: 4391319 (1983-07-01), Heaslip

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