Device for introducing gas into molten metal

Details Device for introducing gas into molten metal Device for introducing gas into molten metal

1983-09-14

1984-11-20

Rutledge, L. Dewayne

Metallurgical apparatus

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

By means introducing treating material

266265, 266266, 266270, 75 59, C21C 548

Patent

active

044835205

ABSTRACT:
An apparatus is disclosed for incorporation in the normal refractory brick lining of a molten metal ladle through which apparatus gas can be introduced for stirring the molten metal. The device comprises a stirring block having a frustro-conical cavity therein and external configuration accommodating portions of the refractory lining of the ladle. A solid non-permeable refractory plug or the like of a frustro-conical shape is provided with a metal jacket spaced with respect to the exterior thereof to form an appropriate gas passageway and a spirally arranged continuous rib is formed on the exterior of the metal jacket for registry when rotated with a similarly shaped groove in the frustro-conical cavity in the stirring block. The engagement of the spirally arranged continuous rib and its registry with the correspondingly shaped continuous spiral groove in the cavity of the stirring block prevents the travel of molten metal thereby regardless of the degree of wear of the stirring block, the plug and the metal jacket thereof while the configurations on the exterior of the stirring block prevent the loosening or cracking of the block with respect to the refractory lining of the ladle and the escape of molten metal thereby as otherwise frequently occurs.

REFERENCES:
patent: 1729447 (1929-09-01), McKee
patent: 3608880 (1971-09-01), Gombert et al.
patent: 3834685 (1974-09-01), Ziemkiewicz et al.
patent: 4396179 (1983-08-01), LaBate

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