Patent ID: 9272954
Filing Date: 2016-03-01
CPC Classification: B22C,C04B,C21B,C21C,F27D

Claim Text:
1. A composition, comprising: an aggregate for addition to mortar made from an as-batched refractory composition which comprises alumina particulates, one or more rare earth oxides, and one or more oxides of a transition metal, the transition metal being Sc, Zn, Ga, Y, Cd, In, Sn, Tl, or the oxide of a transition metal being a mixture of two or more transition metal oxides, the as-batched refractory composition being fired to form a ceramic refractory; wherein the as-batched refractory composition for making the aggregate for addition to mortar further comprises chopped ceramic fibers containing nanofibrils, alumina fibers, or a mixture thereof; wherein the nanofibrils extend the surface area of the chopped ceramic fibers by at least about 100 times the surface area of the chopped ceramic fiber without the nanofibrils; a phosphate and alumina containing composition; and water; the composition being free of SiO