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High Alumina Refractory Cement

1.High initial strength

2.Sulfate corrosion resistance,

3.Biological acid erosion

4.High temperature resistance,

5.Fast coagulation,etc.


Description

The Description of High Alumina Cement:

 

High Alumina Refractory Cement (previously called bauxite cement) is a kind of grinding hydraulic cementing materials with clinker about 50% alumina content and has calcium aluminate as the main material, which is also called refractory cement, which can be made to low cement high alumina castable to build or repair all kinds of furnace and kilns for thermal insulation or acid erosion resistance with high strength.


Application of Refractory Cement:


High alumina cement is mainly used to configure refractory castable such as high alumina low cement castable which can build or repair furnace or kiln for heat insulation or high temperature erosion.


Technique Data

The Technical Data of High Alumina Refractory Cement:


ProductCA-65CA-68CA-70CA-75CA-80
Chemical Composition (%)Al2O364-6667-6969-7173-7577-80
CaO32-3429-3127-2923-2518-20
SiO21.81.20.30.30.3
Fe2O30.60.60.30.30.3

Specific Surface (cm2/g)45004500500055007000
Setting time (h:min)Initial setting (min)0:400:400:400:450:45
Final Setting (min)8:008:0010:0010:0010:00

Cold Modulus of Rupture (MPa)24 hour6.0min6.0min6.0min6.0min5.0min
72 hour8.0min8.0min8.0min8.0min6.0min
Cold Crushing Strength (Mpa)24hour45.0min45.0min45.0min45.0min35.0min
72hour70.0min70.0min70.0min70.0min60.0min

Refractoriness (°C)16801710173017501770


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