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 | |