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Product category|Insulation Bricks
AI2O3: ≥70%
Bulk Density: 1.3g/cm3-1.7g/cm3
Refractoriness: 1500℃-1600℃
Cold Crushing Strength: ≥6MPa
Standard Size: 230*114*65mm/230*114*75mm/Customized
Online Time: 7*24 hours
Lightweight Chinese alumina insulation bricks contain more than 48% alumina. This brick is not directly exposed to the high temperatures inside a kiln or furnace, it simply clings to the kiln wall as insulation.
High temperature performance
Light weight
Good thermal shock resistance
Energy saving and cost reduced
Furnace linings and insulation layers; Ceramic tunnel kilns; Roller kiln; Shuttle kilns; Heating furnaces and coke ovens in the steel industry; Other thermal equipment and heat treatments lining
| Item | Model 1500 | Model 1550 | Model 1600 | |
| AL₂O₃% | ≥70 | ≥75 | ≥80 | ≥85 |
| SiO₂% | ≤28 | ≤23 | ≤18 | ≤13 |
| FezO₃% | ≤0.8 | ≤0.8 | ≤0.6 | ≤0.5 |
| Bulk density | 1.3-1.6 | 1.3-1.6 | 1.3-1.7 | 1.3-1.7 |
| Cold compressive strength | ≥6 | ≥8 | ≥8 | ≥10 |
| Refractoriness under load | ≥1500 | ≥1550 | ≥1600 | ≥1600 |
| Reheating line changing ratio | ±0.5 | ±0.5 | ±0.5 | ±0.3 |
| Thermal Conductivity | ≤0.48 | ≤0.53 | ≤0.7 | ≤0.72 |
| Max service temperature | 1500 | 1550 | 1600 | 1600 |
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