Compositions: ceramic – Ceramic compositions – Refractory
Patent
1980-05-27
1981-10-13
Poer, James
Compositions: ceramic
Ceramic compositions
Refractory
501132, C04B 3510, C04B 3512
Patent
active
042946182
ABSTRACT:
A monolithic refractory composition including from about 63% to about 90% by weight high purity Al.sub.2 O.sub.3 ; from about 2% to 8% by weight crystalline silica having a particle size of -200 mesh; from about 2% to 6% by weight high purity Cr.sub.2 O.sub.3 ; from about 1% to 8% by weight high purity kaolin clay having a particle size of -10.mu. (micron); and from about 5% to 15% by weight phosphate binder. About 1-5% water may be substituted for Al.sub.2 O.sub.3. Preferably, the high purity Al.sub.2 O.sub.3 is a mixture of tabular alumina and calcined alumina and the phosphate binder is H.sub.3 PO.sub.4.
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Brunsvold Brian G.
General Refractories Company
Irving Thomas L.
Murray, Jr. Everett H.
Poer James
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