Method and apparatus for adding solid alloying ingredients...

Details Method and apparatus for adding solid alloying ingredients... Method and apparatus for adding solid alloying ingredients...

C - Chemistry, Metallurgy

21

C

39/107, 53/367

C21C 7/00 (2006.01)

Patent

CA 1239023

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.

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