A. Refractoriness
Refractoriness of high alumina bricks is higher than that of fire clay bricks and silica bricks, it could reach 1750~1790℃. High alumina bricks are high grade refractories.
B. Refractoriness under load
The Al2O3 content of high alumina bricks is high.With less impurities, less low smelting point glass phase is included, so refractoriness under load for high alumina bricks is higher than that of fire clay bricks. Meanwhile, net structure of mullite phase is not well generated inside the high alumina bricks, so it’s lower than that of silica bricks.
C. Slag resistance
Due to high Al2O3 content, the high alumina bricks are almost neutral refractories, so it has great alkali and acid slag resistance.
