Device for introducing gas into molten metal
OwnerMicheal D. Labateinventor
Life of this patent
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Abstract
A solid non-permeable refractory plug has a spaced stainless steel jacket and is located in a pocket block for incorporation in the normal refractory brick lining of a ladle to provide a structure through which gas can be introduced into the molten metal, primary and secondary covers protect the device from metal and/or slag penetration during the filling of the ladle with molten metal.
Claims8
In a device for introducing gas into a mass of molten metal, the improvement which comprises a solid plug having a frustro-conical body of refractory material and a frustroconical shell positioned thereabout in spaced relation thereof, a pocket block having a frustroconical passageway extending therethrough, said block adapted to form a portion of a refractory lining in a container for said molten metal, said container having an opening therein in registry with said frustroconical passageway in said pocket block, said solid frustroconical body and frustroconical shell positioned in said frustroconical passageway, a plurality of impervious covers for said solid body and shell, each of said covers being arranged to be replaceably positioned in covering relation to said body and shell and facing the interior of said containers before each filling of said container with molten metal.
Dependencies are inferred from the claim text.