Zircon sand (zircon powder) is used in refractories (such as zirconium corundum bricks and zirconium refractory fibers), Casting sand for casting industry (precision casting sand), precision ceramic appliances, and also in the production of glass, metal (sponge zirconium) and zirconium compounds production (zirconium dioxide, zirconium oxychloride, sodium zirconate, potassium fluorozirconate, zirconium sulfate, etc.).