Wholesale high quartz powder quartz powder microsilica ultrafine high silicon content

Quartz powder (with quartz sand), also known as microsilica. Quartz sand is a hard, wear-resistant, chemical stability of silicate minerals, the main mineral component of SiO2, quartz sand color is white or colorless, translucent, hardness 7, no cleavage of brittle, shell shaped fracture, oil sheen, a density of 2.65 and a bulk density (20-200 mesh 1.5), its chemical, thermal and mechanical properties have obvious anisotropy, do not dissolve in acid, slightly soluble in KOH solution, melting point 1650 ℃. After the mining of quartz processed, the general fineness of 120 mesh or more (less than 120 mesh), said quartz sand. More than 120 purpose product called quartz powder. Quartz powder (with quartz sand), also known as microsilica. English called quartz sand, silica flour; ground quartz. Quartz powder is a hard, wear-resistant, chemical stability of minerals, the main mineral component is quartz, the main chemical ingredient is SiO2, quartz sand color is white or colorless, translucent, hardness 7, no brittle cleavage, conchoidal fracture, oil sheen, a density of 2.65 and a bulk density (20-200 mesh 1.5), its chemical, thermal and mechanical properties have obvious anisotropy, do not dissolve in acid, dissolved at more than 160 ℃ NaOH, KOH aqueous solution, mp 1650 ℃. From the mining of quartz processed, usually on the 120 mesh sieve size product called quartz sand. Through a 120 mesh sieve product called quartz powder. Two sub-dry method silica powder and water production mode, a variety of conventional size: 120M, 200M, 260M, 325M, 600M, 800M, 1000M and 2000M (M is the number). There is also special sizes according to customer requirements and processing required particle size distribution generally processed. 1, quartz powder dry production, the main equipment knock stone machine, grinder, shaker and the like. The process is fed through a quartz quarry stone knock machined into smaller stone, sand stone and then processed through the mill, then through vibrating sieve, using magnets magnet iron rods and row in the screening process, and then repackaging complete storage. 2, the water produced quartz powder, the main equipment knock stone machine, stone mill, barn, shaker, waterway systems. The process is as follows: quartz stone quarry material through the knock machined into smaller stones, stone after stone mill and then rolled into the sand, add water kept rolling, the water flows into the sedimentation tanks with sand, then the sedimentation tanks The sand brought into the barn baked into dry sand, then through the vibrating sieve, and exclusive use of bar magnets magnet in the screening process, in addition to iron, then finished packing warehouse. Quartz powder dry process is divided into ordinary quartz powder, quartz powder, two kinds of refined grade. Because quartz quarry material quarried from the hills when itself with tan skin. Selecting a relatively small quartz quarry material crushing and screening products directly called ordinary quartz powder, the apparent presents brown and white and white, the advantage of cheap, disadvantage is that a lot of impurities, it is used for the construction industry. Pick out big mineral aggregate, after artificial removal of the surface tan skin, then processed quartz powder is refined, and its apparent is white, shiny, the same as white sugar. Time-consuming process due to the material, so the higher price. Water production of quartz powder is divided into ordinary quartz powder and fine quartz powder. The smaller quartz quarry materials processed into ordinary quartz powder, the large quartz quarry material is processed into refined quartz powder. Compared with dry quartz powder, quartz powder Water Act because in the production process, less equipment to produce iron and water away impurities, such as iron and impurities are less quartz powder dry, but more because of the processing fee labor charge feed, so higher price. General industrial quartz powder (sand) often divided into: ordinary quartz sand (powder), refining quartz sand, high purity quartz sand, fused silica sand and microsilica. 1, ordinary quartz sand (powder): SiO2≥90-99% Fe2O3≤0.06-0.02%, refractoriness 1750 --- 1800 ℃, the appearance of some large particles, the surface of yellow cysts. 1-320 mesh size range, users can request size production. Main purpose: metallurgy, Mexico silicon carbide, building materials, ceramic, steel, media, sodium silicate, chemicals, blasting industry. 2, fine quartz sand (powder): also known as pickling quartz sand, SiO2≥99-99.5% Fe2O3≤0.02-0.015%, selection of high quality ore processing complex. With 1-380 mesh size range, according to user requirements, the appearance of white or crystals. Main purpose: media, advanced glass and glass products, refractories, smelting stone, precision casting, sand blasting, grinding wheels and other materials. 3, high purity quartz sand (powder): SiO2≥99.5-99.9% Fe2O2≤0.005%, it is the use of 1-3 grade natural crystal stone and high quality natural stone, carefully selected, fine processing. Size range 1-0.5mm, 0.5-0.1mm, 0.1-0.01mm, 0.01-0.005mm, according to user requirements. Main purpose: Senior glass, electronic filler, smelting stone, precision casting, chemical, ceramics and so on. 4, silica powder: SiO2: 99.5% min-99.0% min, Fe2O3: 0.02% max, Al2O3: 0.3% max, size: 200-2000 mesh, the appearance of gray or off-white powder ﹑ refractoriness> 1600 ℃. Bulk density: 200 to 250 kg / m Contact: Miss Tian Tel: 18703604889 QQ: 2963550641 Website: www.hnweifen.com