Fused quartz sand is an amorphous (glassy) form of silicon dioxide (SiO2). It is transparent and a type of glass with a long, disordered atomic structure. Its temperature and low thermal expansion coefficient are enhanced through three-dimensional cross-linking. Selected silica raw material with SiO2 > 99% is melted in an electric arc furnace or resistance furnace, reaching a melting temperature of 1695-1720°C. Due to the high viscosity of the SiO2 melt, it cannot be shaped by casting methods at 1900°C, where it has a viscosity of 10^7 Pa·s. After cooling, it becomes a glassy material, which is then mechanically processed, magnetically separated, cleaned, and sieved to produce particles of fused quartz sand in various specifications and for different applications.

Fused quartz sand applications: It serves as a filler in industries such as paint and coatings, and is also a primary raw material for industries like epoxy resin casting, electronic sealants, foundry materials, refractories, ceramics, and glass.