Corundum mullite castable refractories is high-performance refractory materials composed primarily of corundum (Al₂O₃) and mullite (3Al₂O₃·2SiO₂). Through optimized particle size distribution and binder addition, this material exhibits exceptional high-temperature resistance, thermal shock resistance, and corrosion resistance, making it widely applicable in high-temperature industrial equipment. ·High refractoriness: The high melting points of corundum and mullite enable stable operation in environments exceeding 1800°C. Excellent thermal shock resistance: The material structure effectively withstands drastic temperature fluctuations, minimizing cracking and spalling. ·Superior corrosion resistance: Demonstrates strong resistance to slag, molten metal, and chemical corrosion, thereby extending service life. ·High mechanical strength: Maintains excellent mechanical strength at elevated temperatures with outstanding wear and impact resistance.
Power Industry:
Combustion chambers, furnace walls, and separators in boilers; furnace sections in waste incinerators.
Item | CMC-1 | CMC-2 | CMC-3 | |
Al2O3 % | ≥70 | ≥75 | ≥85 | |
SiO2 % | ≤25 | ≤20 | ≤10 | |
Bulk Density g/cm3 | ≥2.7 | ≥2.8 | ≥2.9 | |
Cold Bending Strength，MPa | 110℃×24h | ≥10 | ≥11 | ≥12 |
1500℃×3h | ≥12 | ≥14 | ≥15 | |
Cold Crushing Strength，MPa | 110℃×24h | ≥80 | ≥90 | ≥100 |
1500℃×3h | ≥100 | ≥110 | ≥120 | |
Linear Change Rate After Burning PLC，% 1500℃×3h | ±0.3 | ±0.3 | ±0.3 | |
Thermal Shock Resistances (1100℃, Water Cooling), Cycle | ≥25 | ≥25 | ≥15 | |
Resistance to Abrasion at Ambient Temperature, cm³ | ≤8 | ≤7 | ≤6 | |
Maximum service temperature，℃ | 1550 | 1600 | 1650 | |
Note: Can be customized according to customer requirements, with technical parameters adjustable. | ||||
Power Industry:
Combustion chambers, furnace walls, and separators in boilers; furnace sections in waste incinerators.
Item | CMC-1 | CMC-2 | CMC-3 | |
Al2O3 % | ≥70 | ≥75 | ≥85 | |
SiO2 % | ≤25 | ≤20 | ≤10 | |
Bulk Density g/cm3 | ≥2.7 | ≥2.8 | ≥2.9 | |
Cold Bending Strength，MPa | 110℃×24h | ≥10 | ≥11 | ≥12 |
1500℃×3h | ≥12 | ≥14 | ≥15 | |
Cold Crushing Strength，MPa | 110℃×24h | ≥80 | ≥90 | ≥100 |
1500℃×3h | ≥100 | ≥110 | ≥120 | |
Linear Change Rate After Burning PLC，% 1500℃×3h | ±0.3 | ±0.3 | ±0.3 | |
Thermal Shock Resistances (1100℃, Water Cooling), Cycle | ≥25 | ≥25 | ≥15 | |
Resistance to Abrasion at Ambient Temperature, cm³ | ≤8 | ≤7 | ≤6 | |
Maximum service temperature，℃ | 1550 | 1600 | 1650 | |
Note: Can be customized according to customer requirements, with technical parameters adjustable. | ||||
