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Brief introduction of JM30 mullite insulating bricks
Mullite insulating bricks are high alumina refractories with mullite as the main crystal phase. Generally, the alumina content is between 65% and 75%. In addition to mullite, those with lower alumina content also contain a small amount of glass phase and cristobalite; Those with higher alumina content also contain a small amount of corundum. Mullite insulating bricks can be directly used for the lining of high-temperature kilns, and have been widely used for the lining of shuttle kilns, roller kilns, glass kilns and petrochemical kilns.
Features of JM30 mullite insulating bricks
Mullite refractory brick can be directly in contact with fire filling, with high temperature resistance, high strength. Energy saving effect is remarkable.
Parameters of JM30 mullite insulating bricks
| Index | Volume Density | Reheating Linear Change | Cold Compression Strength | Bending Strength At Normal Temperature | Thermal Conductivity | Al2O3 | SiO2 | Fe2O3 | |
| – | – | g/cm3 | 1400℃*12h,% | Mpa | Mpa | 350℃w/m·k | % | % | % |
| JM30 | A | 1 | -0.8 | 3 | 1.8 | 0.4 | 72 | 26 | 0.5 |
| JM30 | B | 1.1 | -0.7 | 3.5 | 1.9 | 0.43 | 72 | 26 | 0.5 |
| JM32 | A | 1.1 | -0.8 | 3.6 | 1.9 | 0.43 | 75 | 23 | 0.4 |
| JM32 | B | 1.2 | -0.7 | 3.8 | 2 | 0.46 | 75 | 23 | 0.4 |
Application of JM30 mullite insulation brick
Light mullite brick is made of imported plate corundum and high purity electric fused corundum with advanced ultrafine powder adding technology. After mixing, drying and forming, it is fired in high-temperature spindle kiln. Mullite light brick is widely used in residue gasifier, second stage reformer of synthetic ammonia, carbon black reactor and refractory kiln. Product dimensions, physical and chemical indicators, service life are up to customer requirements.
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