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.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.
Common required sizes are: 0.5-1mm, 1-2mm, 2-4mm, 4-8mm, 8-16mm, 16-32mm, 10-20 mesh, 20-40 mesh, 40-80 mesh, 100-120 mesh.
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.
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.
