Glass furnace use Electrocast 33# AZS refractory

Glass furnace use Electrocast 33# AZS refractory brick 1.Properties: Item No.: HXAZS33-H Properties Al2O3 Allowance ZrO2 32-36% SiO2 ≤16.5 Na2O ≤1.5 Fe2O3 +TiO2 +CaO+MgO+ Na2O+K2O+B2O3 ≤3.0 Fe2O3+TiO2 ≤0.3 Bulk density(dense areas) g/cm3 ≥3.65 Apparent porosity(dense areas)% ≤2.0 Resisting glass flow corroding speed in static state mm/24h (common natrium calcium glass1500°C,36h) ≤1.70 Glass phase initial pyrolysis temperature °C ≥1100 Bubble exhalation rate %(common natrium calcium glass 1300°C,10h) ≤5.0 Glass phase effusion rate % --- Thermal expansion coefficient(1000°C) % --- 2. Application: Mainly used in the glass furnace industry, and others industry.