Size:11MM This product is high strength, high circularity, few impurities. Product description: colorless, transparent, solid, high-strength, low wear, good chemical stability. Application: grinding beads having a uniform size, smooth surface, high solid content material and ultrafine grinding dry grinding, wet grinding, compared with zirconium oxide beads to wear small machine model. Heat resistance, ear resistance, compressive strength and many other properties. Chemical composition: SiO2 AL2O3 CaO BaO Na2O Zr.O2 Physical properties : Gravity: 2.8g / cm3 Hardness: >= 720kg / mm2 Refractive index: Nd>=1.50 Round rate: >=99%
