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Product introduction of mullite insulation brick:
Mullite insulating bricks are high alumina refractories with mullite as the main crystal phase. Generally, the alumina content is between 65% and 75%.
Features of mullite insulating bricks:
The advantages of mullite insulation bricks are high purity, less impurities, high temperature resistance, direct contact with flame, resistance to various atmospheric corrosion, low thermal conductivity, low hot melting, high strength, excellent thermal shock resistance, high dimensional accuracy, and free cutting. It acts on the high-temperature furnace to directly contact the flame, with good heat preservation effect, high pressure resistance, low thermal conductivity, etc.
Details of JM28 mullite insulation brick:
The crystallinity of fused mullite is higher than that of sintered mullite, and its thermal shock resistance is better than that of sintered mullite. Their high temperature properties mainly depend on the alumina content and the uniformity of mullite and glass phase distribution. 1400 degree composite bricks are mainly used for hot blast furnace roof, blast furnace body and bottom, glass furnace storage bin, ceramic sintering furnace, etc.
More relevant refractory products: Ceramic fiber modulus
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 |