Refractory Brick for Glass Smelting Furnace

Features:1) Zirconia-mullite brick AZ-20 for glass smelting furnace:a) Al2O3 (%): 60b) Fe2O3 (%): 0.5c) ZrO (%): 20d) Porosity (%): 20e) Bulk density (g/cm³): 3.05f) Cold crushing strength (MPa): 80g) Refractoriness under load 0.2MPa KD (oC): 1,650 2) Mullite brick MZ70G for glass smelting furnace:a) Al2O3 (%): 70b) Fe2O3 (%): 0.5c) SiO2 (%): 28d) Porosity (%): 18e) Bulk density (g/cm³): 2.55f) Cold crushing strength (MPa): 90g) Refractoriness under load 0.2 (MPa) KD 0C: 1650h) Permanent change 1,500oC X 3hrs (%): ±0.1 3) Burned brick based on fused mullite DMZ70S:a) Al2O3 (%): 75b) Fe2O3 (%): 0.3c) SiO2 (%): 24d) Porosity (%): 17e) Bulk density (g/cm³): 2.7f) Cold crushing strength (MPa): 90g) Refractoriness under load 0.2MPa KD (oC): 1,700h) Permanent change 1,500oC x 3hrs. (%): ±0.1