The high alumina brick is made of high quality bauxite c
Features: the product has excellent high temperature mechanical properties and resistance to chemical attack.
Usage: used for blast furnace lining of all parts.
| Item | GL-65 | GL-55 | GL-48 | |
| Al2O3，% | ≥65 | ≥55 | ≥48 | |
| Fe2O3，% | ≤2.0 | ≤2.0 | ≤2.0 | |
| Refractoriness, ℃ | ≥1790 | ≥1770 | ≥1750 | |
| Appearance Porosity,% | ≤19 | ≤19 | ≤18 | |
| Cold crush strength，MPa | ≥58.8 | ≥49.0 | ≥49.0 | |
| Refractoriness under load,0.2Mpa，℃ | ≥1500 | ≥1480 | ≥1450 | |
| Linear change on reheating，% | 1500℃×2hrs | 0～-0.2 | 0～-0.2 | / |
| 1450℃×2hrs | / | / | 0～-0.2 | |
