Carbon bake refractories

Details Carbon bake refractories Carbon bake refractories

1989-11-01

1991-07-09

Dixon, Jr., William R.

Compositions: ceramic

Ceramic compositions

Carbide or oxycarbide containing

501 88, 501100, C04B 3552, C04B 3556

Patent

active

050305956

ABSTRACT:
The present invention relates to an unfired refractory brick for use in reducing conditions at temperatures above 1800.degree. F. The brick comprises a matrix of alumino-silicate clays, alumino-silicate-aggregates and high alumina aggregates. It also has 2 to 20% by weight of finally ground silicon carbide and 2 to 20% by weight of fine carbon particles distributed throughout the matrix. The matrix also includes a water soluble ammonium lignin sulphonate as a chemical binding agent. The brick of the present invention finds particular use in a furnace for kiln baking anodes used in the electrolytic production of aluminum metal.

REFERENCES:
patent: 2300683 (1941-03-01), McClaskey
patent: 3753744 (1973-08-01), Komaru et al.
patent: 4093470 (1978-06-01), Cherry
patent: 4210264 (1980-07-01), Kondo
patent: 4298391 (1981-11-01), Hayase et al.
patent: 4327185 (1982-04-01), Bonsall
patent: 4544641 (1985-10-01), Dumas et al.
patent: 4751204 (1982-06-01), Kyoden et al.
Dialog Abstracts, JP 56140079 2/11/81, "Castable Refractory Composn. for Vibration Moulding . . . Aggregate" Nippon Steel.
"Introduction to the Principles of Ceramic Processing", James Reed (1988) pp. 152-168.
Introduction to Ceramics, W. D. Kingert et al., pp. 540-543, John Wiley and Sons (1976).

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