CUMILITE W

CUMILITE Mullite refractories are manufactured from high purity mullite grains. CUMILITE refractories are extremely stable in service, unlike conventional mullite refractories. They are specially meant for applications that demand good chemical and mechanical stability, strength at high temperatures and resistance to spalling, corrosion and flame impingement. They outperform other refractories in high temperature volume stability in applications such as high intensity burner, carbon black reactors and other processes operated at extremes of temperature and corrosive conditions. Mullite products based on Silimanite, Andalusite and sintered mullite are widely used in glass and steel industry applications for their excellent thermal shock properties, creep resistance and resistance to chemical attack.

PROPERTIES

PRODUCT NAME CUMILITE W 
   76% Alumina, Fused mullite
with a secondary mullite bond 
PROPERTIESUNITLimit ValueTypical Value
Maximum Hot Face Temperatureo C1760 1760
Bulk Densitygm/cc2.50 min.2.6
Apparent Porosity%21.0 max.19
Cold Crushing StrengthKg/cm2800 min.950
Modulus of RuptureKg/cm2  
At Room Temperature 150 min.175
At 
1350oC		 75 min.100
Reheat Change %  
After heating at 1450°C for 6 hrs.  +/-0.1 max.–
Thermal ConductivityW/m K  
At 800°C
Hot Face Temperature		 1.9 max.1.68
At
1000°C Hot Face Temperature		 2.0 max.1.61
At
1200°C Hot Face Temperature		 2.0 max.1.74
Chemical Analysis %   
Al2O3 76.0 min.77.47
SiO2 22.0 max.20.64
Fe2O3 0.30 max.0.21
Recommended Laying Mortars CUMIBOND LM 36

Note : The above typical values shown are based on average test result on standard samples. Properties are subjected to reasonable variation based on product shape etc. and hence should be considered for general guidence only.

 

CUMILITE Mullite refractories are manufactured from high purity mullite grains. CUMILITE refractories are extremely stable in service, unlike conventional mullite refractories. They are specially meant for applications that demand good chemical and mechanical stability, strength at high temperatures and resistance to spalling, corrosion and flame impingement. They outperform other refractories in high temperature volume stability in applications such as high intensity burner, carbon black reactors and other processes operated at extremes of temperature and corrosive conditions. Mullite products based on Silimanite, Andalusite and sintered mullite are widely used in glass and steel industry applications for their excellent thermal shock properties, creep resistance and resistance to chemical attack.

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