Patent ID: 8455380

Claim:
A powder comprising, in percentages by weight: (a) 94% to 99% of particles of at least one refractory material, a main constituent or constituents of which are alumina and/or zirconia and/or silica, the refractory material comprising zirconia; (b) 1% to 6% of a hydraulic cement; and (c) 0.03% at most of organic fibers, a fraction of particles having a size below 40 μm being distributed, in percentages by weight relative to the weight of the powder, in the following manner: fraction<0.5 μm: ≧4% fraction<2 μm: ≧5%, fraction<10 μm: ≧16% fraction<40 μm: 29-45%, and the proportion of zirconia in the fraction of particles having a size smaller than 10 μm, called “fines”, being between 40% and 75% by weight relative to the total weight of said fraction.