it is made from alumina oxide powder and high-grade kaolin. large stock, welcome to order

Specifications:Density: 2.5 minhardness: 7-8PH: 6.0-8.0Water (%) :  0.3 max

SiO2 (%) : 50-53A12O3 (%) : 44-48Fe2O3 (%) : 0.7 maxTiO2 (%) : 1 maxCaO + MgO style (%) : 0.5 maxK2O + Na2O (%) : 0.4 max

Sintered Mullite Calcined Kaolin Sand/Powder