Quartz sand is a kind of quartz particle which is broken and processed from quartzite. Quartz rock, also known as silica, is a kind of silicate mineral with hard texture, wear resistance and stable chemical properties. Quartz sandstone, quartzite and vein quartz exist in nature. Quartz sandstone is a consolidated clastic rock, and the content of quartz clasts is more than 95%,
Refined quartz sand
It comes from all kinds of magmatic rocks, sedimentary rocks and metamorphic rocks, with less heavy minerals, and associated minerals are feldspar, mica and clay minerals. Quartzite can be divided into sedimentary origin and metamorphic origin. The former has no obvious boundary between clastic grain and cement, while the latter refers to quartz ore with deep metamorphic grade and pure quality. Vein quartz is formed by hydrothermal process, almost all of which are composed of quartz, with dense massive structure.
The mineral content of quartz sand varies greatly, with quartz as the main mineral, followed by feldspar, mica, cuttings, heavy minerals and clay minerals.
Physical and chemical properties
Quartz sand is a kind of hard, wear-resistant and chemically stable silicate mineral. Its main mineral composition is SiO2. The color of quartz sand is milky white or colorless translucent, hardness is 7, brittle without cleavage, shell fracture, grease luster, density is 2.65, bulk density (1.6 for 1-20 mesh) and 1.5 for 20-200 mesh It is insoluble in acid, slightly soluble in KOH solution, melting point 1750 ℃.
Main specifications of quartz sand:
Common specifications of quartz sand are: 0.5-1mm, 1-2mm, 2-4mm, 4-8mm, 8-16mm, 16-32mm, 10-20 mesh, 20-40 mesh, 40-80 mesh and 100-120 mesh
The unique physical and chemical properties of quartz sand in application field make it play an important role in aviation, aerospace, electronics, machinery and today's rapid development of IT industry. In particular, its internal molecular chain structure, crystal shape and lattice change rule make it have high temperature resistance, low coefficient of thermal expansion, high insulation, corrosion resistance, piezoelectric effect, high temperature resistance, high temperature resistance, high temperature resistance, high temperature resistance, high temperature resistance, high temperature resistance, high temperature resistance, high temperature resistance, high temperature resistance, high temperature resistance, high temperature resistance, high temperature resistance, high temperature resistance, high Resonance effect and its unique optical properties play an increasingly important role in many high-tech products.
Quartz sand is an important industrial mineral raw material, non chemical dangerous goods, widely used in glass, casting, ceramics and refractories, smelting ferrosilicon, metallurgical flux, metallurgy, construction, chemical industry, plastics, rubber, abrasive and other industries. It can be transported by car, train and water. Industrial production is generally 50kg or 25kg packaging and export ton bag packaging. Common specifications: 0.5-1.0mm, 0.6-1.2mm, 1-2mm, 2-4mm, 4-8mm, 8-16mm, 16-32mm
1、 Glass: the main raw materials of flat glass, float glass, glass products (glass jar, glass bottle, glass tube, etc.), optical glass, glass fiber, glass instrument, conductive glass, glass cloth and special anti ray glass.
2、 Ceramics and refractories: the embryo and glaze of porcelain, the raw materials of high silicon brick, ordinary silicon brick and silicon carbide for kiln.
3、 Metallurgy: raw materials or additives and fluxes of silicon metal, ferrosilicon alloy and aluminum silicon alloy
4、 Construction: concrete, cementitious materials, road building materials, artificial marble, cement physical performance test materials (cement standard sand), etc
5、 Chemical industry: raw materials of silicon compounds and water glass, fillers of sulfuric acid tower, amorphous silica powder
6、 Machinery: the main raw materials of foundry sand, abrasive materials (sand blasting, hard abrasive paper, sandpaper, sandcloth, etc.)
7、 Electronics: high purity metal silicon, optical fiber for communication, etc
8、 Rubber, plastic: filler (can improve wear resistance)
9、 Coating: filler (can improve the acid resistance of coating)
10、 Aviation and aerospace.
Quartz has high fire resistance. In industry, quartz sand is often divided into ordinary quartz sand, refined quartz sand, high purity quartz sand, fused quartz sand and silica powder.