Fused quartz sand is the 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 by the cross-linking of its three-dimensional structure. Selected silicon stone raw material with SiO2 > 99% is melted in an electric arc furnace or resistance furnace, with a melting temperature of 1695-1720°C. Due to the high viscosity of the SiO2 melt, it is at 10^7 Pa·s at 1900°C and cannot be molded by casting methods. After cooling, it becomes a glassy body, which is then mechanically processed, magnetically separated, purified, sieved, and produced into granular fused quartz sand of various specifications and uses.

Fused quartz sand applications: Used as a filler in the paint and coatings industry, it is also a primary raw material for industries such as epoxy resin casting, electronic sealant, foundry materials, refractory, ceramics, and glass.