Desilicate zirconia be made is using azorite as raw material, through the process of electro-casting and blowing. It be used for producing fused cast zirconium corundum products and others high zirconia refractory materials in order to improve its zirconia content, increase alumina-zirconia crystal, decrease impurities, improve exudation temperature and increase life-span of fused cast bricks. ZrO2 Min90% Al2O3 Max7% SiO2 Max3%