FUSED MULLITE  
     
 
 
     
  FEATURES OF PRODUCTS:  
 
 
1st Grade
2nd Grade
Al2O3
70-77%
60-70%
SiO2
22-29%
25-35%
Fe2O3
0.1% max
1.0% max
Refractoriness
1850℃
1800℃
Mullite phase
95% min
90% min
 
     
  CHEMICAL AND PHYSICAL FEATURES:  
 
Property
Grit (>0.1mm)
Fine (≤0.1mm)
Chemical Composition
Al2O3%
70-77
70-77
SiO2%
22-29
22-29
Fe2O3%
≤0.20
≤0.30
TiO2%
≤0.10
≤0.10
CaO%
≤0.30
≤0.30
Na2O%
≤0.30
≤0.50
 
Physical Property
Apparent Porosity% ≤
5
Bulk Density% g/cm3
3.00
Refractoriness℃
≥1850
 
     
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