Nov 16, 2021 Quartz Silica Sand Process Plant. Raw Condition Raw ore is 4-200 mesh. The iron content of the ore is 200ppm, SiO299.58%. Requirements for Finished Sand Products particle size 50-200 mesh, SiO2 content 99.8%, iron content ClOOppm. Tail Waste Discharge Standard all production water is recycled and tail sludge is reused.