It is one of core lining materials for BF, the product is used on belly, tuyere, taphole and slag holel. Fused corundum is used as main raw materials, with special additives and admixtures, phenolic resin as binder,produced through special process.
Its main technical performace is as bellow:
| ITEMS | UNIT | Corundum-SiC bricks | Corundum-Mulite bricks |
| Al2O3 | % | ≥75 | ≥80 |
| Fe2O3 | % | ≤1.0 | ≤1.0 |
| SiC | % | 8～14 | - |
| Appearance porosity | % | ≤16 | ≤16 |
| Bulk density | g/cm3 | ≥3.0 | ≥2.9 |
| Cold Crushing strength | Mpa | ≥100 | ≥80 |
| Refractoriness under load, 0.2MPa | ℃ | ≥1650 | ≥1620 |
| Linear changes on reheating, 1500℃*2hrs | % | 0～0.5 | 0～0.2 |
| Linear expanding, 1000℃ | % | ≤0.7 | ≤0.5 |
| Refractoriness | ℃ | ≥1790 | ≥1790 |
| Application | Bottom,Hearth,tuyere,slag hole,taphole | ||
