Beijing quartz sand prices

 {★ ☆ ★ ☆ ★ ☆ {excuses not to retreat, to create conditions for the forward} ★ ☆ ★ ☆ ★ ☆} --18,310,382,592 landline phone 0510-87443773 Gold Manager: Weijing Li company web site _http: // www. zhhy888.com:http://www.zhhy888.com/ / _ Business QQ_303949886 Beijing North Branch Green Clean Environmental Protection Technology Co., attitude is everything. Fine quartz sand (fine quartz sand) fine quartz sand refined quartz sand pickling quartz sand high purity quartz sand quartz sand translucent sheet of transparent synthetic quartz sand filling quartz sand quartz sand foundry sand manufacturer company supplier of quartz sand filter performance : PH value neutral and acidic water in the 2.1-6.6 range are stable, but there is little dissolved in alkaline water, chemical water treatment SiO2 increments of not more than 2mg / L, the quartz sand immersion in 4mol / L of diluted hydrochloric acid for several hours, then washed with water until neutral. Pickling quartz sand quartz sand raw material in order to eliminate "Quartz" diatomite carrier surface adsorption, reduce peak delamination carrier in the production and processing required before pickling detail. Pickling is the carrier with 6mol / L hydrochloric acid digestion 2h or concentrated hydrochloric acid heated digester 30min, filtered, washed with water to neutral and drying. Pickling can be removed on the surface of the iron, aluminum, ash. Uses: 1, ordinary quartz sand SiO2≥90 ~ 99%, FeO ≤0.06 ~ 0.02%, refractoriness 1750 ~ 1800 ℃, the appearance of some large particles, the surface of yellow cysts. Particle size range of 5 to 220 mesh, users can request size production. Main purpose: metallurgy, Mexico silicon carbide, glass and glass products, ceramic, steel, water filtration, sodium silicate, chemicals, sandblasting and other industries. 2, refining quartz sand SiO2≥99 ~ 99.5%, Fe2O3≤0.02 ~ 0.015%, featuring high-quality ore processing complex. Particle size range of 5 to 480 mesh, according to user requirements, or the appearance of white crystals. Main purpose: Senior glass and glass products, refractories, smelting stone, precision casting, grinding wheel and other materials. 3, high purity quartz sand SiO2≥99.5 ~ 99.9%, FeO≤0.005%, is the use of 1 to 3 natural crystal stone and high quality natural stone, carefully selected, fine processing. Particle size range of 1 ~ 0.5mm, 0.5 ~ 0.1mm, 0.1 ~ 0.01mm, 0.01 ~ 0.005mm range. 4, fused silica sand chemical composition: SiO2: 99.9 ~ 99.99%; Fe2O3: 10PPM ~ 25PPM; Max Li2O content: 1 ~ 2PPM; Max Al2O3 content: 20 ~ 30PPM; Max K2O content: 20 ~ 25PPM; Max Na2O content: 10 ~ 20PPM. Physical Properties: Appearance colorless transparent massive, particles or white powder. True specific gravity: 2.21; Mohs hardness: 7.0; PH value: 6.0 5 Silica Silica: the appearance of gray or off-white powder. Refractoriness> 1600 ℃. Bulk density: 200 to 250 kg / m3.