Alumina bubble brick with super high working temperature, and applied for both working and insulation layer of the high temperature furnace. CH Refractories manufactured Alumina bubble brick with high strength, low thermal conductivity and best price.
Alumina bubble brickl brick is made of high quality Alumina bubble brick as the main raw material, high performance corundum ultra-fine powder as the additive, formed and dried in the high temperature furnace above 1750 degrees.
It has good high temperature resistance, can be directly used in the working lining of high temperature kiln, to reduce the weight of the furnace body, transforming the furnace body lining structure, saving materials, saving energy aspects have obvious advantages.
Alumina bubble brick has the characteristics of high temperature resistance, small density, small heat capacity, low thermal conductivity and strong thermal insulation performance, which can improve the thermal efficiency of kiln, reduce the weight of furnace body and reduce energy consumption.
◆ Used as insulation bricks in ultra-high temperature furnace
◆ Used as working lining of tunnel kiln, push plate kiln, shuttle kiln, crucible furnace, and a variety of electric furnace lining
◆ Applied for metallurgy, light industry, chemical industry, ceramics, glass, electronics and other industries.
◆ Working temperature as high as 1800 degree
◆ Low thermal conductivity
◆ High strength
◆ Very good thermal insulation performance
◆ High strength after baking, no cracks, good exhaust, good performance, easy to replace.
| Item | Utra purity bubble alumina brick | Bubble alumina brick | ||
| CHSAH99 | CHAH99 | CHAH90 | CHAH85 | |
| Max service temperature, °C | 1800 | 1800 | 1800 | 1750 |
| Al2O3, % | ≥99.3 | ≥99 | ≥90 | ≥85 |
| SiO2, % | ≤0.15 | ≤0.3 | ≤9 | ≤14 |
| Fe2O3, % | ≤0.1 | ≤0.2 | ≤0.2 | ≤0.2 |
| Bulk density, g/cm3 | 1.5-1.8 | 1.5-1.8 | 1.4-1.9 | 1.4-1.9 |
| Cold crushing strength, Mpa | ≥12 | ≥15 | ≥18 | ≥18 |
| Initial softening temperature under load, °C | ≥1700 | ≥1700 | ≥1700 | ≥1700 |
| Permanent linear change, % | -0.25 | -0.25 | -0.2 | -0.3 |
| Coefficient of heating expansion, at 1300°C | 8.6 | 8.6 | 8 | 7.8 |
| Thermal conductivity, w/(m·k) | 0.75 | 0.75 | 0.6 | 0.55 |
Submit Request
PDF Request
Back to list