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Factory Direct Price Rongsheng Mullite Insulation Brick JM23 JM26 JM28 Insulating Refractory Brick
Mullite insulation brick is a high-alumina refractory material with mullite as the main crystal phase. Generally, the alumina content is between 40% and 70%. The working temperature ranges from 1300°C to 1600°C. The advantage of mullite lightweight insulating refractory brick is that the mullite bricks can be exposed to flames and can be directly used as the lining of high-temperature kilns. Mullite lightweight insulation brick is a refractory insulation material widely used in new industrial kilns and high-temperature equipment.
Item Brand | JM23 | JM26 | JM28 | JM30 | |
| Max Temperature ( C) | 1260 | 1460 | 1540 | 1700 | |
| Bulk Density (g/cm3) | 0.55-0.60 | 0.8 | 0.89 | 1.03 | |
| Cold Crushing Strength (Mpa) | 1.2 | 1.6 | 2.1 | 2.5 | |
| Modulus of Rupture (Mpa) | 0.9 | 1.4 | 1.6 | 2.1 | |
Reheating Linear Change (%) CT -30 °CX 8H | 1230 °C -0.5 | 1400 °C -0.5 | 1510 °C -0.5 | 1620 °C -0.9 | |
Thermal Expansion 1100 °C( % ) |
0.5 |
0.7 | 0.8 |
0.8 | |
| Thermal conductivity (W/m.k ) | 400 °C | 0.14 | 0.27 | 0.32 | 0.41 |
| 600 °C | 0.16 | 0.29 | 0.34 | 0.43 | |
| 800 °C | 0.18 | 0.31 | 0.36 | 0.44 | |
| 1000 °C | 0.20 | 0.33 | 0.38 | 0.45 | |
| Al2O3 % | 37 | 50 | 64 | 72 | |
| Fe2O3 % | 1.0 | 1.0 | 1.0 | 0.5 | |
