High Alumina Brick
High alumina brick is a kind of neutral refractories. It is manufactured from bauxite or other refractory raw materials within high alumina formed by molding and calcination. High aluminum refractory bricks has high refractoriness, high load softening temperature, thermal shock stability, good slag resistance, alkali, peeling resistance, erosion resistance and so on.
High alumina brick is mainly used for electric furnace top, blast furnace, hot air stove, ladle, cement kiln, glass kiln and other thermal furnace lining. High alumina brick is widely used in iron, steel, chemicals, cement and other industries.
| Brand | XLZ-75 | XLZ-65 | XLZ-55 | XLZ-80 |
| Al2O3 % ≥ | 75 | 65 | 55 | 80 |
| Fe2O3 % ≤ | 2 | 2.5 | 2.5 | 2 |
| Bulk Density %, ≥ | 2.6 | 2.4 | 2.3 | 2.65 |
| Cold Crushing strength /Mpa, ≥ | 50 | 45 | 40 | 55 |
| Refractoriness under load | 1520 | 1500 | 1450 | 1530 |
| Refractoriness /℃, ≥ | 1790 | 1790 | 1770 | 1790 |
| Apparent porosity /% | 23 | 23 | 24 | 22 |
| Linear change on reheating /% | 0.1~-0.4 | 0.1~-0.4 | 0.1~-0.4 | 0.1~-0.4 |
