Gas washing device with reduced gas flow upon wear of gas sink

Details Gas washing device with reduced gas flow upon wear of gas sink Gas washing device with reduced gas flow upon wear of gas sink

1987-06-11

1988-10-25

Rutledge, L. Dewayne

Metallurgical apparatus

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

Having means preventing damage to introducing means, e.g.,...

266 87, C21C 548

Patent

active

047798491

ABSTRACT:
A gas washing device for supplying gas through a metallurgical vessel to molten metal therein includes a gas permeable sink positioned to extend through a wall of the metallurgical vessel. The sink has an inner end to be exposed to the molten metal and subject to wear thereby and an outer end. A gas inlet supplies an operational flow of gas from a gas supply to the outer end of the sink. A device is operatively mounted with respect to the sink and is responsive to a temperature rise indicative of a predetermined extent of wear of the inner end of the sink by the molten metal, to reduce the flow of the gas to a reduced flow less than the operational flow upon the inner end of the sink being worn or eroded to the predetermined extent. A detector detects or measures the reduced flow of gas.

REFERENCES:
patent: 2811346 (1957-10-01), Spire
patent: 3330645 (1967-07-01), de Moustier et al.
patent: 3971548 (1976-07-01), Folgero et al.
patent: 4331471 (1982-05-01), Langeneld et al.
patent: 4616809 (1986-10-01), Hoffgen
Radex-Rundschau, Heft 3, 1983, S. 179-209, "Einsatz und Verschlei.beta. von Spulsteinen in der Sekundarmetallurgie", Grabner et al., (Partial Translation).

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