... different particle sizes as abrasive, precison casting, chemical refractory Application1.super refractory matter,abrasive,polishing,precision ... steelcatalyst carrier,special ceramics 2. precision casting, chemical refractory, 95 electroceramics, decorative ceramics and other special ... 0.05≤0.05≤0.45F90-F150F180-F220 Chemical compositionGritTypical valueFine powderTypical valueAl2O3 %≥9999.59999SiO2 %≤0 ...