... compositions are ZrO2 and SiO2, and a small amount of Fe2O3, CaO, Al2O3, and other impurities, theoretically ... zirconium refractory fiber), molding industry, ceramic and enamelware producing, in addition, also used in ... and zirconium compounds (zirconium dioxide, zirconium oxychloride, zirconium, sodium fluorozirconate, potassium, zirconium sulfate, etc.). 2012 HOT SELL zirconium sand with good quality ...