Corundum mullite board brickManufactured primarily from electric fused white corundum sand, the product boasts a dense structure with excellent high-temperature strength, as well as outstanding erosion and wear resistance. It is highly stable and unaffected by reducing gases such as H2 and CO. Lightweight.Sapphire Mica BrickBroadly used in the lining and accessories for various high-temperature electric furnaces, as well as in medium and high-temperature sections of industries such as ceramics, electronics, and metallurgy.
Corundum mullite brick physical and chemical specifications:
Project | Electro fused aluminaBrick GY-99 | SapphireMolten Limestone Bricks GYM-95 | SapphireMolten Lava Brick GYM-90 | SapphireMolten Lava Bricks GYM-80 |
Al2O3%≥ | 99 | 95 | 90 | 80 |
SiO2%≤ | 0.3 | 3.0 | 9.0 | 18 |
Fe2O3%≤ | 0.2 | 0.2 | 0.4 | 0.4 |
Volume Density g/cm³3≥ | 3.2 | 3.0 | 2.9 | 1.8-2.7 |
At room temperature, pressure resistance strength MPa ≥ | 75 | 100 | 100 | 60 |
Fusibility temperature (°C) | 1790 | 1790 | 1790 | 1790 |
Holding Softening Point ≥ at 0.2 MPa, KD 0.2℃ | 1700 | 1700 | 1700 | 1650 |
Reheat wire variation (%) 1600×3h ≤ | 0.2 | 0.2 | 0.2 | 0.3 |
Thermal stability ≥1100°C, water-cooled beverage | 6 | 10 | 10 | 20 |
Project | Lightweight Alumina Mollite Brick GYM-80 | Lightweight Alumina Mollite Brick GYM-80 | Lightweight Alumina Mullite Brick GYM-80 | Lightweight Alumina Mollite Brick GYM-75 | Lightweight Alumina-Mullite Bricks GYM-70 |
Al2O3%≥ | 80 | 80 | 80 | 75 | 70 |
SiO2%≤ | 18 | 18 | 18 | 20 | 25 |
Fe2O3%≤ | 0.4 | 0.4 | 0.35 | 0.3 | 0.3 |
Volume Density g/cm³3≥ | 1.7 | 1.4 | 1.1 | 1.0 | 1.0 |
At-temperature pressure resistance ≥ MPa | 50 | 40 | 30 | 26 | 25 |
Fusibility temperature (°C) | 1700 | 1650 | 1600 | 1600 | 1550 |
Tensile Softening Point ≥ 0.2 MPa KD 0.2°C | 1650 | 1600 | 1550 | 1550 | 1500 |
Reburn Wire Variation (%) ≤ 1600×3h | 0.2 | 0.2 | 0.18 | 0.18 | 0.17 |
Hot stability ≥ 1100℃ water-cooled beverage | 20 | 26 | 28 | 30 | 30 |
