a, Fire resistance
The fire resistance of high alumina bricks is higher than that of clay bricks and semi silica bricks, reaching 1750-1790 ℃, and belongs to advanced refractory materials.
b, Load softening temperature
Due to the high Al2O3 content and low impurity content in high alumina products, which results in less formation of easily melted glass bodies, the load softening temperature is higher than that of clay bricks. However, since mullite crystals do not form a network structure, the load softening temperature is still not as high as that of silica bricks.
c, Slag resistance
High alumina bricks contain more Al2O3, which is close to neutral refractory materials and can resist the erosion of acidic and alkaline slag. Due to the presence of SiO2, the ability to resist alkaline slag is weaker than that of acid resistant slag.
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