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US 4,792,538 AGranted
Spall resistant chrome-alumina refractory brick
AssigneeDresser Industries, Inc.
InventorsStanley R. Pavlica, Dwight S. Whittemore
Life of this patent
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Abstract
An chrome-alumina refractory brick prepared by pressing and firing a mixture consisting essentially of about 15 to 90 percent by weight of a fused chrome-alumina grain, 5 to 25 percent by weight of chromic oxide, up to 30 percent by weight of a zirconia-containing grain, and the balance alumina.
Claims4
A refractory composition for forming a spalling resistant and slag resistant brick consisting essentially of about 15 to 90 percent by weight of a fused chrome-alumina grain, 5 to 25 percent by weight chromic oxide, up to 30 percent by weight of a zirconia-containing grain, and the balance alumina.
Dependencies are inferred from the claim text.