Mullite Refractory Castable

Mullite refractory castable is advanced refractory materials primarily composed of ‌mullite (3Al₂O₃·2SiO₂)‌ as the main phase, offering ‌high refractoriness‌, ‌excellent thermal shock resistance‌, and ‌superior resistance to chemical erosion‌‌. They are extensively used as linings for industrial furnaces in steel, glass, ceramics, and cement industries. ·High refractoriness‌: Withstands temperatures up to ‌1700–1800°C‌ due to mullite’s stable crystalline structure and ‌Al₂O₃ content (60–75%)‌‌. Ideal for prolonged high-temperature operations in oxidizing atmospheres. ·Superior thermal shock resistance‌: Low thermal expansion coefficient (‌~4.5×10⁻⁶/℃‌) enables resistance to rapid temperature fluctuations (>20 cycles at ΔT=1000°C)‌. ·Erosion/corrosion resistance‌: Resists attack from acidic/alkaline slags, alkali vapors, and molten metals (e.g., iron, glass)‌.