We are a refractory material manufacturer, with four major factories: heavy brick factory, light brick factory, monolithic refractory factory and fused-cast brick factory.
We promise to provide you with high-quality refractory materials.
Product introduction of JM28 mullite insulation bricks
JM28 mullite insulation brick is made of high-purity materials through a unique process, which has the advantages of stable volume, good thermal stability, high strength, low thermal conductivity, etc. They are ideal energy-saving products and can be widely used in lining or insulating layer of various industrial furnaces and kilns in metallurgical industry, ceramic industry, chemical industry and mechanical industry.
Performance Characters of JM28 mullite insulation bricks
- High porosity.
- Small bulk density.
- Good insulation effect.
- High mechanical strength.
- The thermal conductivity is small.
Application of JM28 mullite insulation bricks
- Glass industry, steel industry.
- Ceramic industry, nonferrous metal industry.
- Power generation industry of electrolytic aluminum industry.
- Hot face fireproof lining and other fireproof backing.
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 |