Beijing quartz sand prices, Beijing quartz sand wholesale

 Quartz sand Product details: Scope of refined quartz sand used in drinking water filtration and other water purification. Pre-processing and recycling of water is more suitable for dry petroleum, chemical, mining, metallurgy, thermal power, paper making, printing and dyeing, leather, food and other production water, and recycling of wastewater. Technical requirements 1) mechanical strength, crushing rate and the wear rate of the sum should not exceed 1.5% (percentage by weight). 2) chemical stability, free of visible dirt, mica and organic impurities, filter flooding fluid does not contain toxic substances. 3) not less than the density of quartz sand 2.55g / cm3. (The use of special requirements for density except). 4) quartz sand burning weight loss should not exceed 0.7% hydrochloric acid soluble rate should not exceed 1.5% (ministerial standard). 5) The clay content should not exceed 1%, density is less than the content of 2g / cm3 of light materials should not exceed 0.2% (ministerial standard). 6) particle size with the management, the appearance of more angular monologue shiny crystals. Particle size range of single or dual-media, typically 0.5-1.2mm. Three-filter particle size range, typically 0.5-0.8mm. 7) size range smaller than the specified lower limit of the particle size, by weight, not more than 3% greater than the specified upper limit of the particle size of not more than 2%. 8) size range quartz gravel supporting layer, typically 2-4,4-8,8-16,16-32 and 32-64mm (ministerial standard).