90% High Alumina Brick Corundum Brick
90% High alumina brick Corundum brick
Name |
High purity corundum bricks DL-98 | Normal corundum bricks DL-95 | Normal corundum bricks DL-90 | Mullite corundum | Chromium oxide corundum | |
| Indexes | Bricks | Bricks | ||||
| Items | MDL-80 | GDL-85 | ||||
| Chemical composition | Al2O3% | 98.5 | 95 | 90 | 80 | 85 |
| Cr2O3% | ||||||
| SiO2% | 0.3 | 3 | 9 | 18 | 0.2 | |
| Fe2O3% | 0.2 | 0.2 | 0.5 | 0.5 | 0.2 | |
| R2O% | 0.3 | 0.6 | 0.6 | 0.4 | 0.5 | |
| Bulk density g/cm3 | 3 | 2.9 | 2.9 | 2.7 | 3.1 | |
| Compressive | 75 | 100 | 100 | 60 | 80 | |
| strength | ||||||
| at normal temperature | ||||||
| MPa | ||||||
| Fire resistant | 1790 | 1790 | 1790 | 1790 | 1790 | |
| °C | ||||||
| Soften point at 0.2 MPa load | 1700 | 1650 | 1650 | 1700 | 1700 | |
| KD °C | ||||||
| Reheating linear shrinkages% | 0.2 | 0.2 | 0.2 | 0.3 | 0.2 | |
| 1600 °C ×3h | ||||||
| Thermal shock stability | 6 | 10 | 10 | 20 | 15 | |
| 1100 °C water | ||||||
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