Zirconia sand

Indicator Stability Semi-stabilityZrO2+HfO2 %≥94≥94CaO2 %4.5 5.53.5 4.5SiO2 %<0.2<0.5Fe2O3 %<0.2<0.4Al2O3 %<0.2<1.0Long-period serving temperature °C22002200Refractoriness °C 2500 2500Stability %10070-85Granularity mm Based on customer′s requirements Zirconia sand is the indispensable materials in some hot precision casting industry. Stability electric-melting zirconium sand can be used in high-temperature furnaces, wiredrawing mould and so on.