Al2O3: 72-75%
Bulk Density: 1.0-1.2g/cm3
High porosity
Small volume density
High mechanical intensity
Small thermal conductivity
JM30 Mullite Insulation Brick
Description
JM30 mullite insulation bricks are made of pure mullite as raw material, adding alumina powder according to different types and sintering at high temperature.
Characteristics
- High porosity.
- Small volume density.
- Good insulation effect.
- High mechanical intensity.
- Small thermal conductivity
JM30/32 Mullite Insulation Brick Specification
| JM28 Mullite Insulation Brick | JM30A | JM30B | JM32A | JM32B |
|---|---|---|---|---|
| Volume density (g/cm3) | 1 | 1.1 | 1.1 | 1.2 |
| Reheating Linear Change 1500℃*12h % | -0.8 | -0.7 | -0.8 | -0.7 |
| Cold Compression Strength (Mpa) | 3 | 3.5 | 3.6 | 3.8 |
| Modulus of Rupture (Mpa) | 1.8 | 1.9 | 1.9 | 2 |
| Thermal Conductivity 350℃w/m·k | 0.4 | 0.43 | 0.43 | 0.46 |
| Al2O3 (%) | 72 | 72 | 75 | 75 |
| SiO2 (%) | 26 | 26 | 23 | 23 |
| Fe2O3 (%) | 0.5 | 0.5 | 0.4 | 0.4 |
Application
JM30 Mullite Insulation Brick should be used as the first layer of a refractory lining or as back insulating layer behind all other refractory layers in furnaces, bakes, fire channels, refining chambers and heat furnaces, regenerators, gas production plants and conduits, intended furnaces, stress-relieving furnaces, reactor chambers and similar high-temperature industrial devices.
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