1.Ceramics, Abrasive Abrasives F Sand, Sandblasting, Polishing, Precision Casting, Floor, Refractory P Sand.
2.First-class AL2O3 >=95, Fe2o3<=5, SiO2<=1.5, density 3.85, appearance of brown-red particles, use: refractory, fine polishing.
3.Secondary AL2O3:70-90%, Fe2o3<=5, SiO 2<=1.5, density 3.85, appearance black gray powder, use: grinding, grinding wheel, cutting piece, sandblasting.
4.Three levels of AL2O3:70 below, Fe2O3<=4.3, SiO2<=1.5, density: 3.85, appearance of black particles, gray powder, use: floor. For example, runways, playgrounds, and wear-resistant floors for factories.