Mullite brick physical and chemical indicators

Mullite brick is a type of refractory brick made from high-purity mullite and other materials with excellent thermal shock resistance and mechanical strength. Below are some typical physical and chemical indicators for mullite brick:
1.Apparent Porosity: ≤18%
2.Bulk Density: ≥2.65 g/cm³
3.Cold crushing strength: ≥80 MPa
4.Refractoriness Under Load (0.2 MPa, 0.6%): ≥1650°C
5.Thermal Shock Resistance (1100°C water quenching, cycle times): ≥20
6.Thermal Conductivity (1000°C): ≤1.5W/(m·K)
7.Chemical Composition: Al₂O₃ content: ≥70%, SiO₂ content: ≥25%

The physical and chemical indicators of mullite brick may vary depending on the manufacturing process, raw materials, and application requirements. Mullite brick is widely used in various industrial applications such as high-temperature furnaces, kilns, incinerators, and boilers due to its excellent thermal stability, mechanical strength, and resistance to thermal shock.