Fused Silica Sand: Fused silica is made from the fine quartz sand by electrical smeting, It has the stable quality, little impurity. The content of SiO2 of fused silica is more than 99.9%,Fused silica is widely used for the trades of electron,rubber,ceramics, fireproof material and so on with the epoxy resin of polyester. It is widely used for the trades of electron, plastic, resin. Chemical Analysis And Particle Size Distribution/Specification First Grade Second Grade Third Grade Chemical Analysis Data SiO2(%) 99.95-99.99% 99.85-99.95% 99.7-99.85% Al2O3(ppm) 90ppm 160ppm 250ppm Fe(ppm) 20ppm 50ppm 100ppm CaO(ppm) 28ppm 36ppm 50ppm MgO(ppm) 6ppm 8ppm 10ppm Na2O(ppm) 30ppm 40ppm 50ppm TiO2(ppm) 9ppm 10ppm 12ppm K2O(ppm) 31ppm 40ppm 50ppm LiO2(ppm) 9ppm 10ppm 15ppm Particle Size Lump:(0mm-60mm),4/10mesh,10\30mesh,30-50mesh,50-100mesh,100-200mesh,The detailed size distribution according to client's requirement