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1.Product introduction of bubble alumina insulation brick
Bubble alumina insulation bricks are made of bubble alumina bricks and alumina powder as the main raw materials, combined with other binding agents, fired at 1750 degrees, the use temperature can reach 1800 ℃, the products have high mechanical strength, several times the general light products, while the bulk density is only one half of corundum products.
2.Advantages of bubble alumina insulation brick
Bubble alumina insulation bricks can reach more than 1750 degrees, good thermal stability, small change rate of refired line, durable. Strong thermal insulation characteristics, low thermal conductivity.
It is widely used in petrochemical industry gasification furnace, carbon black industry reaction furnace, metallurgical industry induction furnace and other high temperature, high temperature furnaces.
3.Parameters of bubble alumina insulation brick
| Index | Level I | Level II | Level III |
| Al2O3, % | ≥98 | ≥98 | ≥98 |
| SiO2, % | ≤1 | ≤1 | ≤1 |
| Fe2O3, % | ≤0.7 | ≤0.7 | ≤0.7 |
| Refractoriness under load, ℃ | ≥1790 | ≥1790 | ≥1790 |
| Refractorines under load, 0.1MPa, ℃ | ≥1600 | ≥1600 | ≥1600 |
| Bulk density, g/cm3, ≤ | 1.2 | 1.4 | 1.6 |
| True porosity, %, ≥ | 62 | 60 | 58 |
| Cold crushing strength, MPa, ≥ | 3 | 10 | 12 |
| Thermal Conductvity, 1100℃, W.(m.k), ≤ | 0.93 | 1.04 | 1.16 |
4.Our company
The quality of the bricklaying link of the refractory for kiln directly determines the effect after it is put into use. From the date of product delivery to the smooth operation of the kiln, Kerui Company provides comprehensive, meticulous and rigorous technical guidance for refractory construction. The integrated operation mode of Kerui Refractory Service and Technology Center ensures the quality and safe operation of products.