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High Alumina Castable (Cement Free)

High Alumina Castable (Cement Free)


Item Code:A4301

High alumina castable, which is mainly made from high alumina aggregate, fine powder and unique liquid silica sol adhesive, is a multicomponent system to the clients.


High alumina castable is mainly applied in the repair of mullite matrix bricks in flame space of glass furnace, sealing layer of furnace bottom, forehearth, regenerator bottom, side wall, flue and other low temperature areas.


High alumina castable has high strength and density, low porosity and abrasion, and good thermal shock performance as well as erosion resistance. Additionally, it owns good fluidity and plasticity in the construction process.

Physical and Chemical Indicators

Performance Item Indicators
Chemical composition after calcination(%) SiO2 29.0-34.0
Al2O3 63.0-69.0
Alkalis <0.4
CaO <0.1
Fe2O3 <0.8
TiO2 <1.0
 Physical properties AP(%) 13-16
BD(g/cm3) 2.5-2.6
CCS(Mpa)816℃             1400℃ 30.5-40.0         82.0-113.0
Applied limit temperature℃ 1760
Linear change on reheating(%) -0.3 ~ 0.1
Water content(%) 0

Note: The above data are obtained under ideal laboratory conditions. The actual results in application may be varied according to different tests and installation methods.

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Henan AGRM FurnTech Co., Ltd
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