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Help Center1800C High Alumina Bubble Bricks for Industrial Furnace
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Specifications
Alumina Bubble Bricks1.Alumina content:85%,90%,99%
2.Max temperature:1800C
3.Bulk Density:1.4-1.7g/cm3
4.Used in furnace
Alumina Bubble Brick is made of alumina hollow ball and alumina powder at 1750C, combined with other anchoring agent.
Alumina bubble bricks are primarily used for lining of high temperature furnace and thermic insulant of ultra-high temperature furnace of the industrial as refractory material, industrial ceramics, electronic ceramics, petrochemical and metallurgical industries.
Item |
Al2O3 Bubble Brick |
||
|
85 type |
90type |
99type |
Max temperature |
1680 |
1700 |
1800 |
Al2O3 % |
>85 |
>90 |
>99 |
SiO2 % |
<13 |
<8 |
<0.2 |
Fe2O3 % |
<0.2 |
<0.2 |
<0.2 |
Bulk density g/cm3 |
1.4-1.7 |
1.4-1.7 |
1.4-1.7 |
Cold crushing strength Mpa |
>12 |
>10 |
>9 |
|
Reheating linear change % (1600C x3h) |
±0.3 |
±0.3 |
±0.3 |
|
Thermal expansion coefficient x10 -6 (room tem.-1300C) |
~7.8 |
~8.0 |
~8.6 |
|
Thermal w/(m.k) conductivity(Average 800C) |
<0.8 |
<1.3 |
<1.5 |
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