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：：Insulating Refractories Refractory Ceramic Fiber felt, Blanket, Board and Modules：：
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| Ceramic fiber blanket, felt, board and modules are excellent light weight and energy saving refractory materials due to its low bulk density and low thermal conductivity. They may be used as insulating lining materials for high temperature kilns and pipes as well as sealing materials. It is easy to form them into various shapes and fill them in complicated installation spaces. Seven varieties in this series have the honour to win the title of national grade new products. |
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Item |
Ordinary alumino-silicate |
High alumina |
Zirconia-containing alumino- silicate |
Poly crystalline alumina & Others |
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PXZ/T/B |
GXZ/T/B |
HXZ/T/B |
DXZ/B & HHZ/B |
| Long- term service temperature, °C |
1000 |
1200 |
1300 |
1350~1600 |
| Al2O3, % ³ |
45 |
52~55 |
36~40 |
62~95 |
| Al2O3+ SiO2, % ³ |
96 |
98 |
99(+ZrO2) |
99 |
| Fe2O3, % £ |
1.5 |
0.25 |
0.25 |
0.1 |
| ZrO2, % |
- |
- |
13~18 |
- |
| R2O, %
£ |
0.5 |
0.25
(Felt<0.5) |
0.25
(Felt£ 0.5) |
- |
Thermal conductivity,W/(m×K) ,
£
(Average temperature) |
0.12(Felt, 600°C)
0.11(Blanket, 500°C)
0.14(Board, 680°C)
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0.13(Felt,720°C)
0.10(Blanket, 500°C)
0.16(Board,680°C)
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0.2(Felt)
0.2(Blanket)
(Hot face, 1250°C)
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0.15(Felt)
(Hot face,1100°C)
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Apparent
density
Kg/m3
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Felt |
180~350 |
180~350 |
180~350 |
180~300 |
| Blanket |
96~160 |
96~160 |
96~160 |
- |
| Board |
280~800 |
280~800 |
280~700 |
280~600 |
| Modulus |
Felt |
280~400 |
300~450 |
280~400 |
300~350 |
| Blanket |
170~250 |
170~250 |
170~250 |
- |
Heating shrinkage, % °C
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4
(1150°C´6hrs) |
4
(1400°C´6hrs) |
3
(1300°C´24hrs) |
2
(1400°C´24hrs) |
CCS, MPa
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0.4~1.5
Board |
0.5~1.5
Board |
0.4~1.5
Board |
- |
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Application |
Used as insulating lining materials or sealing materials for various furnaces such as heating furnace, quenching furnace, incinerator and high temperature pipes in the industries of metallurgy, petrochemical, machinery and electron, etc. |
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