Natural quartz silica sand is a non-metallic mineral. Its main mineral component is SiO2. It is used in glass, casting, ceramics and refractory materials, and smelting ferrosilicon. The main mineral component is SiO2, the color of quartz sand is milky white, or colorless translucent, hardness 7, brittle without cleavage, shell-like fracture, grease luster, density 2.65, bulk density (1-20 mesh is 1.6 ), 20-200 mesh.

Ordinary quartz silica sand, namely SiO2 ≥ 90-99%, Fe2O3 ≤ 0.06-0.02%, fire resistance 1750℃. Part of the appearance is large particles with yellow skin on the surface. Ordinary quartz silica sand is generally a kind of water treatment filter material made of natural quartz ore, which is crushed, washed with water, dried, and secondary screened. The particle size ranges from 5 to 220 mesh, and can be produce according the users requirements.

Refined quartz silica sand, also known as pickled quartz sand, with SiO2 ≥ 99-99.5%, Fe2O3 ≤ 0.005%. It is made by a complex acid pickling process from selected high-quality quartz ore. Pickling can remove iron and aluminum on the surface of quartz silica sand. The partical size ranges from 2 to 2500 mesh, and can be produced according to the user's requirements, with white or crystalline appearance.

High purity quartz silica sand, with SiO2 ≥ 99.5-99.9%, Fe2O3 ≤ 0.001%, is made of high-quality natural quartz stone. To obtain high purity quartz silica sand, quartz raw ore or quartz silica sand needs to be purified to remove impurities, such as iron, aluminum trioxide, mica, etc.

High purity quartz silica sand is used to make glass, refractories, ferrosilicon smelting, metallurgical flux, ceramics, grinding materials, casting molding quartz sand and so on.

Fused quartz is an extremely pure material featuring very low thermal expansion and excellent optical qualities. Fused quartz is produced synthetically by the vapor phase hydrolysis of a silicon halide. The resulting product is vitreous, non-crystalline, of the highest purity and one of the most transparent glasses made. The fused quartz sand has thermal stability, high purity, stable chemical properties, uniform particle distribution, and thermal expansion rate near 0.