Apparatus for injecting gas into molten metal

Details Apparatus for injecting gas into molten metal Apparatus for injecting gas into molten metal

1989-07-28

1990-11-27

Miles, Tim

Gas and liquid contact apparatus

Contact devices

Liquid tank

B01F 304

Patent

active

049734334

ABSTRACT:
Apparatus for injecting gas into molten metal includes a porous ceramic body having a first surface through which gas can be introduced into the body, and a second surface through which gas can flow from the body. A refractory member is attached to the body and surrounds at least the first surface, while leaving the second surface exposed. The refractory member is impervious to gas, while having a coefficient of thermal expansion approximating that of the body. Preferably, a refractory sealant securely attaches the refractory member to the body. By use of the present invention, the refractory member and the body remain tightly connected to each other at all times. Accordingly, gas leaks are prevented and all gas flowing into the body is discharged through the second surface, as desired.

REFERENCES:
patent: 2294973 (1942-09-01), Ford
patent: 2354609 (1944-07-01), Phipps
patent: 2575193 (1951-11-01), Shire
patent: 2774585 (1956-12-01), Wirts
patent: 3330645 (1967-07-01), Moustier et al.
patent: 3753746 (1973-08-01), Koerner
patent: 4046845 (1977-09-01), Veeder

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