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Silica sand processing plant
Silica sand is a quartz particle produced by crushing quartz stone. Quartz stone is a non-metallic mineral, a hard, wear-resistant, and chemically stable silicate mineral. The color of quartz sand is milky white, or colorless and translucent, with a Mohs hardness of 7.</br> Silica sand is an important industrial mineral raw material, non-chemical dangerous goods, widely used in glass, casting, ceramics and fireproof materials, smelting ferrosilicon, metallurgical flux, metallurgy, construction, chemical industry, plastics, rubber, abrasives, filter materials and other industries.
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Applications
Quartz has high fire resistance. In the industry, silica sand is often divided into: ordinary quartz sand, refined quartz sand, high-purity quartz sand, fused quartz sand, and micro silica powder.
Ordinary Silica sand
Ordinary silica sand, namely SiO2≥90-99%, Fe2O3≤0.06-0.02%, refractoriness 1750℃
Appearance: some large particles have yellow skin cysts on the surface.
Ordinary silica sand is generally a kind of water treatment filter material made of natural quartz ore, crushed, washed with water, dried, and screened;
The filter material has features : no impurities, no edges and corners, high density, high mechanical strength, strong pollution loading ability and long service life, making it an ideal material for physical water treatment.
The particle size range is 5-220 mesh, and can be produced according to user requirements.
Main applications: metallurgy, silicon carbide, glass and glass products, enamel, cast steel, water filtration, soda, chemical, spray and other industries.
Refined silica sand
Also known as pickled quartz sand, SiO2≥99—99.5%, Fe2O3≤0.005%, using high-quality natural silica sand and mortar.
High purity silica sand
SiO2≥99.5-99.9%, Fe2O3≤0.001%, using high-quality natural quartz stone and mortar.
Fused Silica Sand
Chemical composition: SiO2 99.9-99.95%, Fe2O3 5PPM-25PPM max, Li2O 1-2PPM max, Al2O3 20-30PPM max,
K2O 20-25PPM max, Na2O 10-20PPM max (PPM is a millionth unit).
Physical properties:
The appearance is colorless transparent block, granule or white powder.
Relative gravity: 2.21.
Mohs hardness: 7.0.
pH value: 6.0.
Micro silica powder
Silica powder: The appearance is gray or off-white powder, and the refractoriness is >1600°C. Bulk density: 200~250 kg/m3.
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