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Brief introduction of mullite insulation brick JM28
Mullite insulating brick can withstand the high temperature above 1790 ℃. The starting temperature of load softening is 1600-1700 ℃, the normal temperature compressive strength is 70-260MPa, the heat shock resistance is good, the high strength, the low high temperature crepe rate, the low expansion coefficient, the low thermal coefficient, and the acid slag corrosion resistance. It can greatly reduce the weight of high temperature furnace, change the structure, save materials, save energy and improve production efficiency.
Features of mullite insulation brick JM28
The refractory of mullite insulating bricks is high, reaching above 1790 ℃. The starting temperature of load softening is 1600~1700 ℃. The normal temperature compressive strength is 70~260MPa. Thermal shock resistance.
Parameters of JM28 mullite insulation bricks
| 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 |