Detiberated Silica Sand: The high purity silica sand is processed from the quality silica (or quartz) stone, have a high purity of SiO2,a low inpurity content, which as raw materials of optical glass, refractory, metallurgy, ceramic, foundry, abrasives etc. Chemical Analysis And Particle Size Distribution/Specification First Grade Second Grade Chemical Analysis Data SiO2(%) 99.8%-99.85% 99.70%-99.80% Al(ppm) 60max 80max Fe(ppm) 30-40 40-60 Ca(ppm) 2-5 5-10 Mg(ppm) 2-4 4-8 Na(ppm) 10-20 20-30 Ti(ppm) 0.5 0.5-1 K(ppm) 10-20 20-30 Li(ppm) 0.1 0.2 Particle Size 3000um-75um,detailed size distribution according to client's requirement