KERATECH

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Ceramic fiber boards

Ceramic fiber board is a lightweight refractory material processed with alumina silica fibers for applications at temperatures up to 1650 °C (3000 °F). Fiber board is a vaccum formed product that resists higher gas velocities than ceramic fiber blanket. It is ideal for furnace, boiler duct and stack lining due to its low thermal conductivity and low heat storage allowing shorter cycle times and quicker access for maintenance. 


Specifications LD-2300 LD-2600 LD-2800 LD-3000 MD-2300 MD-2600 MD-3000
Use temperature
 
Maximum Use °C 1260 1425 1538 1650 1260 1425 1650
Continuous Use °C 1149 1316 1425 1540 1149 1316 1540
Melting Point °C 1732 1780 1850 1815 1732 1780 1815
Density  
kg/m3 256-320 256-320 256-320 256-320 336-400 336-400 336-400
Thermal Conductivity (%) 24Hrs. 1200°C              
  2-3 2-3 1-2 @1540°C 1-2 1-2 @1540°C
        <4     <4
Thermal Conductivity W/m°K
 
316°C
0.07 0.07 0.07 0.07 0.09 0.09 0.09
538°C
0.09 0.09 0.09 0.09 0.10 0.10 0.12
760°C
0.12 0.12 0.12 0.14 0.13 0.13 0.15
1094°C
0.17 0.17 0.17 0.20 0.17 0.17 0.21
Chemical Analysis (%)              
Al2O3 39-41 48-50 63-65 63-65 45-47 52-54 71-73
SiO2 52-54 45-47 32-34 35-37 44-46 43-45 27-29
Others
2-3 1-2 1-2   2-3 3-4  
P.P.I 4-6 4-6 5-6 4-6 4-5 4-5 4-6
Fiber Diameter (mm)
2-4 2-4 2-4 2-3 2-4 2-4 2-3
Sizes (mm)
 
Thickness
12,5; 25; 50
Width 610, 1000
Length 1000, 1200
Specifications HD-2300 HD-2600 HD-3000 INORGANIC LD 13mm MD
Use temperature
 
Max. use temperature °C 1260 1425 1650 1260 1260 1260
Continuous Use °C 1149 1316 1540 1149 1149 1149
Melting Point °C 1732 1780 1815 1732 1732 1732
Density            
kg/m3 416-480 416-480 416-480 256-320 260-300 340-380
Thermal Shrinkage (%) 24Hrs. 1200°C  
  1-2 1-2 @1540C° 1-2 2-3 2-3
      <4      
Thermal Conductivity W/m°K
 
316°C
0.13 0.13 0.13 0.07( 0.07 0.09
538°C
0.15 0.15 0.15 0.09 0.09 0.10
760°C
0.17 0.17 0.17 0.12 0.12 0.13
1094°C
0.20 0.20 0.20 0.18 0.18 0.17
Chemical Analysis (%)            
Al2O3 43-45 52-54 71-73 39-41 47-49 47-49
SiO2 47-49 41-43 27-29 52-54 50-52 50-52
Others 2-3 5-7   <1 <2 <2
P.P.I 4-5 4-5 4-6 4-6 4-6 4-5
Fiber Diameter (mm)
2-4 2-4 2-3 2-3 2-4 2-4
Sizes (mm)
 
Thikness 12,5; 25; 50
Length 610, 1000
Width 1000, 1200

Features:

• Low thermal conductivity, saves fuel

• Very low heat storage, faster heat and cool-down reducing cycle times

• Light weight-replaces heavy back - up insulations, less steel required 

• Excellent thermal shock resistance

• Resistant to hot gas erosion

• Resists most chemical attacks

• Easy to cut, handle and install

• Low sound transmission 

• Resists penetration by moltenaluminum and other non ferrous metals

• Contains no asbestos

Typical Applications:

• Refractory lining for industrialfurnaces in walls, roofs, doors, stacks, etc

• Combustion chamber liners, boilers and heaters

• Back-up insulation for brick and monolithic refractories 

• Transfer of molten aluminum and other non ferrous metals

• Expansion joint boards

• Barrier against fl ame or heat

• Hot face layer for high velocity or abrasive furnace atmosphere