| abstract |
A refractory composite of zirconium mullite based on aluminosilicate, alumina and zirconium sand, having the following chemical composition, in weight percent: - 55% to 65% Al2O3; - 15% to 25% SiO2; - 15% to 25% of ZrO2; and - less than 3% impurities caused by the raw material, characterized in that the refractory zirconium mullite composite material has a mineralogical composition comprising 65% by weight to 85% by weight of mullite and 15% by weight to 35% in zirconium weight, in which the aluminosilicate comprises Andalusite, kyanite, and / or sillimanite, and in which the base of the composite raw material comprises - 25% by weight to 35% by weight of Andalusite; - 35% by weight to 45% by weight of alumina; and - 25% by weight to 35% by weight of zirconia sand. |