Device for introducing gas into molten metal
OwnerMichael D. LaBateinventor
Life of this patent
Estimating the term…
Abstract
A solid non-permeable refractory plug has a spaced stainless steel and/or ceramic jacket and is located in a pocket block for incorporation in the normal refractory brick lining of a ladle to provide a passageway through which gas can be introduced into the molten metal. The stainless steel and/or ceramic jacket extends above the refractor plug and the pocket block to form a hot metal dam that protects the passageway from metal and/or slag penetration during the filling of the ladle with molten metal.
Claims6
In a device for introducing gas into a mass of molten metal in a container, the improvement which comprises a refractory plug and an open ended shell positioned thereabout in spaced relation thereto and defining an opening around said refractory plug, a pocket block having a passageway extending vertically therethrough, said pocket block adapted to form a portion of a refractory lining in said container for said molten metal, said container having an opening therein in registry with said passageway in said pocket block, said refractory plug and said shell positioned in said passageway in said pocket block with said shell and refractory plug extending outwardly of and above said passageway in said pocket block in protecting relation to said refractory plug with respect to molten metal introduced into said container and so as to form a hot metal dam protecting said opening around said refractory plug.
In a device for introducing gas into a mass of molten metal, the improvement which comprises a plug of non-premeable refractory material and a shell positioned thereabout in spaced relation thereto and defining an opening around said non-premeable plug, a pocket block having an opening extending vertically therethrough, said pocket block adapted to form a portion of refractory lining in a container for said molten metal, said container having an aperture therein in registry with said opening in said pocket block, said non-premeable plug and said shell positioned in said opening in said pocket block and facing the interior of said container so as to form a gas passageway through said pocket block and form a circular hot metal dam around said opening and said non-premeable plug with respect to said pocket block and molten metal thereon.
Dependencies are inferred from the claim text.