Quartz, SiO2 content of> 98%. Fe2O3 <0.1%. Particle size 2cm-8cm, (grits: 45, 63, 75, 100 microns) 
Whiteness> 90%. 
Product is quartzite sandstone powder recrystallized form, are exploiting and processing of high purity, the harmful impurities such as Fe, Ca very thapdap demand manufacturing refractory bricks, copper and grinding additive used in production assistant super phosphate, ceramics, plaster walls, a carrier for plant protection products, fertilizer bon..cat water purification quartz, glass ...