Washed Black refractory Clay

Chemical Properties(wt%) SiO2 49.5Al2O332.2 TiO2 0.64 Fe2O3 0.85 CaO 0.05 MgO 0.11 K2O 1.4Na2O0.10I.O.L13.3Particle-size distribution <10µm 75<5µm50<2µm30Physical PropertiesFlow rate S (measured under specific gravity of 1.65 ) 35”Brightness 118 0°C 62Strength Drying Strength kgf/cm248Sinter AbilityShrinkage 1180°C % 10.5Water absorption 1180°C % 8 Data of brightness was measured in the surrounding oxidized in the electric stove.Particle-size distribution was tested by Hydro 2000MU(A) laser particle analyzer. Data could have slight change because products are made from natural non- metal raw materials. Moisture: <=13% Specification:180 mesh powder