Quartz sand contains trace elements such as iron oxide, aluminum oxide, lead, boron, magnesium and sodium in addition to silicon dioxide. Mainly used as raw materials for glass industry and ceramic industry, flux for metallurgical industry, and treatment of sewage, reclaimed water and purified water. Physical and chemical substance quartz sand is a hard, wear-resistant and chemically stable silicate mineral. Quartz sand is milky white or colorless and translucent, with hardness of 7, brittleness without cleavage, conchoidal fracture, oily luster, density of 2.65, and bulk density of 1-20 mesh 1.6.
20-200 mesh is 1.5, and its chemical, thermal and mechanical properties are obviously anisotropic. Insoluble in acid, slightly soluble in KOH solution, melting point 1750℃. Quartz sand is an important industrial mineral raw material and does not belong to dangerous chemicals. Widely used in glass, casting, ceramics and refractories, smelting ferrosilicon, metallurgical flux, metallurgy, construction, chemical industry, plastics, rubber, abrasives and other industries. It can be used for automobile transportation, train transportation, air transportation, water transportation, industrial production, 50 kg or 25 kg packaging and export ton bag packaging.
Property structure
Quartz sand is a hard and wear-resistant silicate mineral with stable chemical properties, and its main mineral component is silica. Quartz sand has many colors, often milky white, colorless and gray. Hardness 7, brittleness, no cleavage, conchoidal fracture. Petroleum is shiny with a density of 2.65g/cm3, and its chemical, thermal and mechanical properties are obviously anisotropic. Insoluble in acid, slightly soluble in KOH solution, melting point 1750℃, piezoelectric.
Seasonal is actually the mineral name of crystal, which has the same chemical composition. The difference is that gem-grade crystals can be used as gem materials and can be processed into various ornaments. However, most of the dyed polycrystalline quartzite can only be used as imitations of jade, such as jadeite, xiuyan jade and dushan jade. Single crystals can also be broken first and then dyed to imitate tourmaline and other precious stones.
Baidu Encyclopedia-Quartz Sand