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Alumina Bubble Castable

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Alumina Bubble Castable is a high-grade lightweight heat-insulating castable produced by Kerui Group with high load softening temperature, high strength and good heat insulation performance. The operating temperature is generally 1600-1700. Ideal heat insulation material for high temperature special lining insulation layer.


Alumina Bubble CastableKR-1.3KR-1.4
Bulk density g/cm³≤1.38~1.41.7
Normal temperature compressive strength Mpa≥5≥10
Operating temperature °C15501700
Column 1 Value 6±0.3±0.3


Alumina Bubble Castables are very stable in various atmospheres, and are ideal heat insulation materials for high-temperature linings. Especially for high temperature kiln application at 1800℃, it can be used as high temperature insulation filler, downdraft kiln, shuttle kiln, molybdenum wire furnace, tungsten rod furnace, induction furnace, nitriding furnace, etc.


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