Corundum mullite brick: Good compactness, erosion resistant, low thermal conductivity. Used for linings of glass ceramic kilns, high temperature metallurgical equipment, cracking furnaces, CFB boilers, etc.
Corundum mullite refractory bricks are high-end refractory products. They are sintered at high temperatures in an oxidizing atmosphere, mainly using high-purity corundum and mullite as raw materials. Their unique interlaced crystal structure of corundum-mullite endows the products with excellent high - temperature stability and erosion resistance, and they are widely used in high-temperature industrial fields such as glass kilns and metallurgical equipment.
Features and Properties
| Index Items | Corundum - Mullite Refractory Bricks (≥ 80) | Corundum - Mullite Refractory Bricks (≥ 85) | Corundum - Mullite Refractory Bricks (≥ 90) |
| Al₂O₃ /% | ≥ 80 | ≥ 85 | ≥ 90 |
| Fe₂O₃ /% | ≤ 0.15 | ≤ 0.2 | ≤ 0.2 |
| Bulk Density /g/cm³ | ≥ 2.75 | ≥ 2.9 | ≥ 3.0 |
| Apparent Porosity /% | ≤ 18 | ≤ 17 | ≤ 17 |
| Compressive Strength at Normal Temperature /MPa | ≥ 85 | ≥ 90 | ≥ 90 |
| Softening Temperature under Load 0.2MPa, T0.6 /℃ | ≥ 1700 | ≥ 1700 | ≥ 1700 |
| Thermal Shock Stability (1100℃, water - cooled) / times | ≥ 7 | ≥ 15 | / |
| Creep Rate (1500℃ × 5 - 50h) /% | ≤ 0.3 | ≤ 0.3 | / |
Al₂O₃:≥62%;
Cr₂O₃:≥10%;
Cold Crushing Strength:≥100MPa;
WhatsApp
WeChat
WhatsApp ID: +86 190 5961 2888
WeChat ID: +86 190 5961 2888
