High alumina refractory shapes

Details High alumina refractory shapes High alumina refractory shapes

1993-06-21

1994-08-16

Group, Karl

Compositions: ceramic

Ceramic compositions

Carbide or oxycarbide containing

501128, C04B 3510, C04B 3556

Patent

active

053387112

ABSTRACT:
Mixes for forming high alumina refractory shapes with high resistance to aluminum penetration comprising at least about 60% by weight aluminum oxide, about 1 to 5% by weight boron phosphate, and about 5 to 15% by weight silicon carbide. A phosphorous-containing binder is added and the mix can be formed into brick which when cured or burned to a temperature below the oxidation temperature of silicon carbide can be used to minimize aluminum penetration and dross when the brick are employed in a metallurgical vessel in contact with molten aluminum.

REFERENCES:
patent: 4088502 (1978-05-01), LaBar
patent: 4126474 (1978-11-01), Talley et al.
patent: 4209056 (1980-06-01), Gardikes et al.
patent: 4561958 (1985-12-01), Stewart et al.
patent: 5039634 (1991-08-01), Dulberg et al.
patent: 5190899 (1993-03-01), Sutor
patent: 5214006 (1993-05-01), Langenohl

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