Mullite Insulating Brick
2.The brick is compressed in vacuum and sintered under high temperature.
3.Mullite insulating brick is widely used as hot face refractory lining or back-up insulation in various kinds of industrial furnaces.
Technical data sheet
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JM23 |
JM26 |
JM28 |
JM32 |
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USA Item |
IFB2600 |
IFB2800 |
IFB3000 |
IFB3200 |
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Classification Temperature(℃) |
1260 |
1430 |
1540 |
1650 |
1760 |
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Bulk Density(g/cm3) |
0.6 |
0.8 |
0.9 |
1.0 |
1.2 |
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Cold crushing strength(MPa) |
1.2 |
1.6 |
2.1 |
2.5 |
3.5 |
|
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Modulus of rupture(MPa) |
0.9 |
1.4 |
1.6 |
2.1 |
2.1 |
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Reheating Linear Change(%)CT-30℃×8h |
-0.5 |
1400℃ -0.5 |
1400℃ -0.5 |
1620℃ -0.9 |
1730℃ -0.9 |
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Thermal Expansion 1000℃(%) |
0.5 |
0.7 |
0.8 |
0.9 |
1.1 |
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Thermal conductivity(W/m.k) |
400℃ |
0.14 |
0.27 |
0.32 |
0.41 |
0.49 |
|
600℃ |
0.16 |
0.29 |
0.34 |
0.43 |
0.5 |
|
|
800℃ |
0.18 |
0.31 |
0.36 |
0.44 |
0.51 |
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|
1000℃ |
0.20 |
0.33 |
0.38 |
0.45 |
0.53 |
|
|
Al2O3(%) |
40 |
56 |
67 |
73 |
77 |
|
|
SiO2(%) |
51 |
41 |
30 |
24 |
20 |
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Fe2O3(%) |
≤1.0 |
≤0.8 |
≤0.7 |
≤0.6 |
≤0.5 |
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Feature
1.Low thermal conductivity,good thermal insulation effect;
2.Low iron and alkali metal content,high refractoriness;
3.High compressive strength,high mechanical intensity;
4.Accurate sizes speed up the masonry speed,reduce the use of refractory mortar to ensure the strength and stability of the linning, thus
extending the life of the lining;
5.Can be processed into special shapes to reduce the number of bricks and brick joints.
Application
Mullite insulating bricks are widely used in tunnel kiln,roller kiln,shuttle kiln,hot blast furnace,electric kiln,gasifier,gas furnace,hydrogen furnace and other high temperature kiln equipment.It has the characteristics of direct contact with flame, anti-peeling, high temperature resistance, and can
be used as the heat insulation lining of high temperature industrial furnace and the working lining of other industrial high temperature kiln, so as
to reduce the weight of masonry and save energy.
