Vortex inhibitor for molten metal discharge
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United States of America Patent
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Jul 22, 1986
Grant Date -
N/A
app pub date -
Sep 21, 1984
filing date -
Sep 21, 1984
priority date (Note) -
Expired
status (Latency Note)
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Abstract
A vortex inhibitor for use in tundishes, ladles, or metal making furnaces prevents the contamination of high quality molten steel by the slag layer which rides atop the surface of molten metal within such receptacles comprises a tapered polygonal body of castable refractory material whose specific gravity is less than the specific gravity of the molten metal but greater than the specific gravity of the slag. The refractory body is buoyantly supported at the interface of the layer of slag and the molten metal and includes a weighted apex so that the apex depends toward nozzle opening within receptacle. Thus, the body centers itself within the swirl of fluid generated during discharge of the fluid through the nozzle, and the inertia of the body substantially deenergizes the vortex so as to avoid formation of a suction funnel which typically draws the slag layer into and through the nozzle with the molten metal below the previously known critical level within the receptacle.
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