Water treatment quartz sand high purity quartz sand sand blasting rust removal ordinary quartz sand sand for sewage treatment

  Water treatment quartz sand high purity quartz sand sand blasting derusting ordinary quartz sand sand for sewage treatment detailed description quartz sand for casting all kinds of casting sand selected from natural quartz sand are suitable for all kinds of casting mold sand
Due to the SiO2 content of more than 99
56%, the smoothness and zero rework rate of castings are guaranteed
7 quartz sand: SiO2 content of 97
5% to 99
6% (plus or minus 0
5%) Fe2O3 content & lt; 1％。 The sand is smooth and clean, and the mud content & lt; 0
2-0
3%, angle coefficient & lt; 1
35-1
47, water content & lt; 6%, reasonable particle size ratio and good reusability

Main uses: cast steel, cast iron, non-ferrous metals, resin sand, lawn quartz sand, coated sand, etc

technical requirement
(1) the sum of mechanical strength, crushing rate and wear rate shall not be greater than 1
5% (percentage by weight)

(2) stable chemical properties, free of visible soil, mica and organic impurities, and the water leaching solution of the filter material does not contain toxic and harmful substances

(3) the density of quartz sand shall not be less than 2
55g/cm3
(unless there are special requirements for density in use)

(4) the weight loss on ignition of quartz sand filter material shall not be greater than 0
7%, and the solubility of hydrochloric acid shall not be greater than 1
5% (ministerial standard)

(5) the mud content shall not be greater than 1%, and the content of light substances with density less than 2G / cm3 shall not be greater than 0
2% (ministerial standard)

  Physical and chemical properties of quartz powder (same as quartz sand), also known as silicon powder Quartz sand is a kind of silicate mineral with hard, wear-resistant and stable chemical properties
Its main mineral composition is SiO2
The color of quartz sand is milky white, or colorless and translucent, with hardness of 7, brittleness and no cleavage, shell fracture, grease luster, density of 2
65 and bulk density (1
5 for 20-200 mesh)
Its chemical, thermal and mechanical properties are obviously anisotropic and insoluble in acid, Slightly soluble in KOH solution, melting point 1650 ℃ The quartz stone mined from the mine is processed
Generally, the product with fineness above 120 mesh (less than 120 mesh) is called quartz sand
More than 120 mesh products are called quartz powder
  Quartz powder can be produced by dry method and water method, with various conventional specifications: 120m, 200m, 260m, 325m, 600m, 800m, 1000m and 2000m (M is the mesh number)
In addition, special-shaped specifications can also be processed according to customer requirements, and those requiring particle size distribution can also be processed generally Uses: manufacturing glass, refractory materials (furnace charge), smelting ferrosilicon, coatings, rubber fillers, metallurgical fluxes, ceramics, abrasive materials, metal surface treatment, etc
it has strong anti acid medium etching ability in buildings to prepare acid resistant concrete and acid resistant sand slurry