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Specifications

Alumina Bubble Brick is a kind of lightweight refractories which can resist high temperature and save energe very well.the alumina bubble brick has good stability performance under different kinds of service environment,especialy is suitable for high temperature furnace with 1800 degreeC

Specification for Alumina Bubble Brick:

Al2O3%>=                                                                     95                95          99
SiO2%<=                                                                         4.7            4.7           /
Fe2O3%<=                                                                     0.3             0.3          /
Bulk Density g/cm3<=                                                  1.1            1.3          1.5
Cold Compress Strength Mpa                                    18             20           24
Refractoriness Under Load ℃(0.2Mpa,0.6%)       1650        1650      1750
Thermal Resistance times(1000℃,air cooling)      20             20           18
Long time service temperature ℃                             1700       1700      1760