Sintered Mullite Insulating Refractory Fire Brick
Description of Sintered Mullite Brick
Sintered mullite bricks are a type of high-temperature refractory material known for their excellent thermal stability and resistance to thermal shock. They are primarily composed of mullite crystals, which are formed through a sintering process involving raw materials like alumina and silica.
Sintered mullite bricks are primarily composed of mullite, a crystalline material made up of alumina (Al₂O₃) and silica (SiO₂). The specific composition may vary depending on the manufacturer and the intended application.
Features of Sintered Mullite Brick
High Temperature Stability
Low Thermal Expansion
Excellent Thermal Shock Resistance
Chemical Inertness
Applications of Sintered Mullite Brick
They find applications in industries such as ceramics, glass, iron and steel, non-ferrous metals, and petrochemicals. They are used in furnaces, kilns, and other high-temperature equipment.
Technical Parameter of Sintered Mullite Brick:
Item |
Index |
|
SM65 |
SM70 |
SM75 |
SM80 |
Al2O3 % |
≥64 |
≥68 |
≥74 |
≥78 |
Fe2O3 % |
≤1.2 |
≤1.2 |
≤1.0 |
≤0.8 |
Apparent Porosity % |
≤18 |
≤18 |
≤17 |
≤16 |
Bulk Density g/cm3 |
≥2.45 |
≥2.50 |
≥2.60 |
≥2.75 |
Cold Crushing Strength MPa |
≥60 |
≥70 |
≥75 |
≥85 |
0.2Mpa Refractoriness Under Load ℃ |
≥1580 |
≥1600 |
≥1650 |
≥1700 |
Permanent Linear Change Rate % 1500℃×2h |
-0.4~+0.1 |
-0.3~+0.1 |
-0.2~+0.1 |