Glass beads, produced from crushed glass and flat glass materials, are processed into spherical shapes through high-temperature melting. Known for their low thermal conductivity, high strength, and excellent chemical stability, glass beads feature smooth surfaces, uniform sizes, high hardness, and abrasion resistance.
Zirconia fused alumina is produced by melting aluminum oxide and zirconium oxide in an electric arc furnace at temperatures above 2000°C.
Green silicon carbide is made from petroleum coke and high-quality silica, with salt added as an additive, and refined in a high-temperature resistance furnace.
Ceramic foundry sand is made from high-quality calcined bauxite, processed through electric fusion, granulation, and screening processes to produce spherical refractory particles.
Bubble alumina is a new type of high-temperature insulation material, consisting of a-Al2O3 microcrystals.