Device for introducing stirring gas into molten metal in metered

Details Device for introducing stirring gas into molten metal in metered Device for introducing stirring gas into molten metal in metered

1988-05-13

1989-06-06

McDowell, Robert

Metallurgical apparatus

Means for introducing fluent into vessel, e.g., tuyere

With flow control means or internal flow guide

266270, C21C 548

Patent

active

048364339

ABSTRACT:
A device for introducing stirring gas into a mass of molten metal in a container by way of an opening in the container and a pocket block having a plurality of metered passageways extending therethrough, the pocket block forming a portion of a refractory lining in said container, the plurality of passageways being defined by a plurality of metal tubes arranged in a spiral configuration in circumferentially spaced relation to one another in fixed position in the pocket block which is formed of a suitable refractory, preferably vitrified. The plurality of metal tubes communicate with the single tube which extends through the bottom of the container and communicates with a supply of gas, such as argon.

REFERENCES:
patent: 4396179 (1983-08-01), LaBate
patent: 4483520 (1984-11-01), LaBate
patent: 4538795 (1985-09-01), LaBate
patent: 4632367 (1986-12-01), LaBate
patent: 4687184 (1987-08-01), LaBate et al.
patent: 4725047 (1988-02-01), LaBate
patent: 4758269 (1988-07-01), Tommaney

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