Mullite lightweight insulation brick is a lightweight refractory insulation material made of mullite as the main raw material through a special process.
Its density is low, usually in the range of 0.6-1.2g/cm³, which makes it light in weight, more convenient and labor-saving to carry and install, and can reduce the overall weight of kilns and other equipment
(1) High refractoriness and good thermal shock resistance;
(2) Low thermal conductivity and good thermal insulation performance;
(3) Low heat capacity, less accumulated heat energy and good energy saving effect;
(4) Good processability and plasticity, easy to construct.
Industrial kilns, petrochemical, power industry, aerospace
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Item |
Index |
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|
JM23 |
JM26 |
JM28 |
JM30 |
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|
Refractoriness/℃ |
1260 |
1430 |
1540 |
1650 |
||||
|
Body density/（g/cm3）≤ |
0.6 |
0.8 |
1.0 |
1.0 |
||||
|
Cold pressing strength/MPa≥ |
1.0 |
2.0 |
2.5 |
3.0 |
||||
|
|
Test temperature/℃ |
1230 |
1400 |
1510 |
1620 |
|||
|
Xmin~Xmax |
-0.5~0.5 |
|||||||
|
Thermal conductivity/[W/(m·K)]≤ |
0.20 |
0.30 |
0.37 |
0.44 |
||||
|
Chemical composition/% |
Al2O3≥ |
40 |
55 |
65 |
70 |
|||
|
Fe2O3≤ |
1.0 |
0.9 |
0.7 |
0.6 |
||||
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