Quartz sand introduction Quartz sand is made of quartz stone crushing. Also known as quartz silica, is a hard, wear-resistant, chemically stable silicate mineral salts. Quartz sand with silicon carbide, silicon carbide, black corundum and brown fused alumina, etc. Belongs to refractory materials.General in industrial quartz sand often divided into: ordinary quartz sand, quartz sand refined, high-purity quartz sand, fused silica sand and silica fine powder. Sio2 content of between 85% and 95% referred to ordinary quartz sand; sio2 content of more than 95 percent called refined quartz sand. Quartz sand is an important industrial mineral raw materials, non-hazardous chemicals, widely used in glass, foundry, ceramics and refractories, silicon iron smelting, metallurgical flux, metallurgy, construction, chemicals, plastics, rubber, abrasive and other industries. Can motor, rail transport, water transport. Physicochemical properties Quartz sand is a hard, wear-resistant, chemical stability of silicate minerals, the main mineral component is sio2, quartz sand color is white or colorless, translucent particles, brittle, oil sheen, density is 2.65, its chemical , thermal and mechanical properties have obvious anisotropy, do not dissolve in acid, slightly soluble in koh solution, the melting point of 1750. Qingyun refractories company production of quartz sand has no impurities, high mechanical strength, chemical stability, good economic characteristics.