is a high-performance refractory material primarily composed of mullite (3Al₂O₃·2SiO₂) crystals.  

Composition:  

Synthesized from high-purity alumina and silica, sintered at elevated temperatures.  

Key Properties:  

 High refractoriness (≥1790°C)  

 Excellent structural strength at high temperatures  

 Superior thermal shock resistance  

 Strong corrosion resistance (against acid slag/alkaline gases)  

 Low thermal conductivity  

Applications:  Used in glass furnace linings, ceramic kiln rollers, petrochemical cracking furnaces, and high-temperature industrial kiln furniture.