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Brief introduction of mullite insulation brick JM28:
JM28 Mullite insulating bricks should be used for the first layer of refractory lining or for thermal insulation behind all other refractory linings in furnaces, kilns, fire ladders, refinery rooms and heating ovens, regenerators, natural gas production plants and pipelines, prefabricated furnaces, decompression furnaces, reactor rooms and similar high temperature industrial installations.
Features of JM28 Mullite insulating bricks
1. High porosity.
2. Low overall density.
3. Good insulating effect.
4. High mechanical resistance.
5. Low thermal conductivity.
Application of JM28 mullite insulation brick
Glass industry steel industry
Ceramic industry Non-ferrous metal industry
Electrolytic aluminium industry
Fireproof coatings for hot surfaces other fireproof coatings
Parameters of mullite insulation bricks JM28:
JM-28 Model | Volume Density | Reheating Linear Change Rate | Cold Crushing Strength | Modulus of rupture | Thermal Conductivity | Al2O3 | SiO2 | Fe2O3 |
- | g/cm3 | 1500℃*12h% | MPa | MPa | W/m·K | % | % | % |
A | 0.8 | -1 | 2.5 | 1.4 | 0.28 | 64 | 33 | 0.7 |
B | 0.9 | -0.8 | 2.8 | 1.6 | 0.32 | 65 | 32 | 0.6 |
C | 1 | -0.7 | 3.5 | 1.8 | 0.34 | 66 | 31 | 0.6 |