Lightweight Alumina-Mullite BricksManufactured primarily from electric fused white corundum sand, the product features a dense structure, excellent high-temperature strength, and notable resistance to erosion and wear. It boasts strong stability and is unaffected by reducing gases such as H2 and CO. Lightweight.Sapphire Mica BricksBroadly used for the linings of various high-temperature electric furnaces and high-temperature furnace accessories, as well as in medium and high-temperature sections of industries such as ceramics, electronics, metallurgy, etc.
Corundum mullite brick physical and chemical indicators:
Project | Electrolytic AluminaBrick GY-99 | CorundumMolten Lava Bricks GYM-95 | SapphireMolten Lava Bricks GYM-90 | SapphireMolten Lava Brick 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 |
Tensile Softening Point ≥ 0.2 MPa KD | 1700 | 1700 | 1700 | 1650 |
Reheat Wire Change (%) ≤ 1600×3h | 0.2 | 0.2 | 0.2 | 0.3 |
Hot stability ≥ 1100℃ water-cooled beverage | 6 | 10 | 10 | 20 |
Project | Lightweight Alumina Mollite Brick GYM-80 | Lightweight Alumina-Mullite Bricks GYM-80 | Lightweight Alumina-Mullite Brick GYM-80 | Lightweight Alumina-Mullite Brick GYM-75 | Lightweight Alumina Mollerite 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 room temperature, pressure resistance strength MPa ≥ | 50 | 40 | 30 | 26 | 25 |
Fusibility temperature (°C) | 1700 | 1650 | 1600 | 1600 | 1550 |
Holding Softening Point ≥ at 0.2 MPa, 0.2℃ | 1650 | 1600 | 1550 | 1550 | 1500 |
Recalculated Wire Change (%) 1600×3h≤ | 0.2 | 0.2 | 0.18 | 0.18 | 0.17 |
Hot stability >1100°C, water-cooled beverage ≥ | 20 | 26 | 28 | 30 | 30 |
