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Product introduction of high alumina refractory mortar
The main material of the high alumina refractory mortar is high chromate, and the binder is soft clay or chemical adhesive. The Al2O3 content is determined by the composition of the brick and the use requirements of the building part.
Application of high alumina mortar
High aluminium bricks can be widely used to repair various industrial furnaces, such as the top of the hot air furnace, the heat storage chamber, the combustion chamber, the top of the blast furnace, the top of the industrial furnace, the furnace wall, etc.
Features of high alumina mortar
- Good plasticity and practical construction
- High bonding and corrosion resistance
- High filler softening temperature
- Good thermal shock resistance
- Resistance to spalling and erosion
Product performance of high alumina mortar
| Item | GL-65 | GL-55 | GL-48 |
| Al2O3%, ≥ | 65 | 55 | 48 |
| Fe2O3%, ≤ | 2.0 | 2.0 | 2.0 |
| Refractoriness, ℃ | 1800 | 1780 | 1760 |
| 0.2MPa load softening start temperature, °C, ≥ | 1500 | 1480 | 1450 |
| Reburnishing line change1500℃, 2h1450℃, 2h | 0-0.2 – | 0-0.2 – | – 0-0.2 |
| Porosity, %≤ | 19 | 19 | |
| Normal temperature pressure resistance temperature, MPa≥ | 58.8 | 58.8 | 49 |