Refractory for gas blowing for molten metal refining vessel

Details Refractory for gas blowing for molten metal refining vessel Refractory for gas blowing for molten metal refining vessel

1992-07-08

1993-11-30

Kastler, Scott

Metallurgical apparatus

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

By means introducing treating material

266217, B22D 4158

Patent

active

052658503

ABSTRACT:
A refractory for gas blowing to be attached to an opening of a molten metal refining vessel includes a gas permeable portion comprising an alumina refractory, the gas permeable portion having a plurality of gas blowing apertures running therethrough in the axial direction thereof, and a collar portion comprising an alumina refractory, formed integrally with the gas permeable portion so as to surround the gas permeable portion. The alumina refractory for both the gas permeable portion and the collar portion contains at least 88 wt. % alumina and is substantially non-porous with a porosity of up to 20%.

REFERENCES:
patent: 3053525 (1962-09-01), Leroy et al.
patent: 3330645 (1967-07-01), Moustier et al.
patent: 4266970 (1981-05-01), Iwaoka et al.
patent: 4539043 (1985-09-01), Miyawaki et al.
patent: 4647020 (1987-03-01), Liesch et al.
patent: 5104097 (1992-04-01), Naujokat et al.
Tekko Binran (Iron and Steel Handbook) 3rd Ed., vol. 11, Ironmaking and Steelmaking, Sep. 20, 1980, p. 796.

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