Summary
Quartz sand is a hard, wear-resisting, stable chemical property of silicate minerals, the main mineral composition is SiO2, quartz sand color is milky white, or colorless translucent, a multi edge type ball of white crystal, hardness, brittle cleavage, conchoidal fracture, oily luster, density is 2.65, bulk density (1-20 1.6), 20-200 head is 1.5, the chemical, thermal and mechanical properties has obvious differences to, insoluble in acid, slightly soluble in KOH solution, melting point 1750 DEG C.
Quartz sand application
Quartz sand is a unique physical and chemical properties, making it occupies a pivotal position in the aviation, aerospace, electronics, machinery, and today, with the rapid development of IT industry, especially in the inner molecular chain structure, crystal shape and lattice changes, so that it has high temperature resistance, thermal expansion coefficient is small, high insulation, corrosion resistance, piezo electric effect, resonance effect and the unique optical properties, is playing a more and more important role in many high-tech products.
Fine quartz sand can be used as abrasive, such as grinding glass:
Glass: flat glass, float glass, glass (glass jar, glass bottle, glass tube, etc.), optical glass, glass fiber, glass instrument, conductive glass, glass cloth and anti ray special glass as the main raw material.
Second, ceramics and refractory materials: embryo material and porcelain glaze, kiln with high silica brick, ordinary brick and silicon carbide and other raw materials.
Three, metallurgy: silicon metal, ferrosilicon alloy and silicon Aluminum Alloy and other raw materials or additives, flux
Four, construction: concrete, cementitious materials, road materials, artificial marble, cement physical performance test materials (cement standard sand)
Five, chemical: silicon compounds and water glass and other raw materials, sulfuric acid tower filler, amorphous silica powder
Refractory quartz sand application
Refractory quartz sand is the main component of quartz sand. According to various needs to add different additives. Scientific formula. Advantages of low price, good acid resistance, non stick slag. All required materials for metal smelting induction furnace lining.
The main technical indicators: SiO2 = 97.5%Al2O30.7---0.3%Fe2O30.4---0.1%H2O = 0.5%
Bulk density: 1.9----2.1g/cm fand
Liner volume density: 1.75---1.8g/ cm fand
Fire resistance: A[1500---1700 advisable]
Fire resistance: H, C[1300---1450] advisable size: 5.1-----0.021mm
Refractory quartz sand used in smelting non-ferrous metal, black power, frequency, frequency conversion, core induction furnace lining
