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.
JM28 insulation bricks are made of high purity materials with a unique process, so they have the advantages of stable volume, good thermal stability, high strength and low thermal conductivity.
JM28 insulation bricks are an ideal energy-saving product and can be widely used as furnace linings or insulation layers for various industrial furnaces in metallurgical industry, ceramic industry, chemical industry and mechanical industry.
2. Features of JM28 mullite insulation brick
- High porosity.
- Small volume density.
- Good insulation effect.
- High mechanical intensity.
- Small thermal conductivity.
3. Parameters of JM28 mullite insulation brick
| Item | JM23 | JM26 | JM28 | JM30 |
| AL2O3(%) | 38-44 | 50-58 | 65-70 | 70-73 |
| Fe2O3(%) | 1 | 0.9 | 0.8 | 0.7 |
| Classification Temperature (℃) | 1350 | 1430 | 1540 | 1600 |
| Bulk Density (g/cm3) | 0.6-1 | 0.8-1 | 0.8-1 | 0.8-1 |
| Reheating Linear Change (%) CT-30 ℃*8h | 1250℃ -0.5 | 1400℃ -0.5 | 1500℃ -0.5 | 1550℃ -0.5 |
| Cold Crushing Strength (Mpa) | 3.0-4.5 | 3.0-4.5 | 3.0-4.5 | 3.0-4.5 |
| Modulus of Rupture (Mpa) | 1.5 | 1.7 | 1.8 | 2 |
| Thermal conductivity400℃(W/m.k) | 0.25 | 0.27 | 0.32 | 0.41 |
| Thermal Expansion1000℃(%) | 0.5 | 0.7 | 0.8 | 0.9 |
4. Application of JM28 mullite insulation brick
- Glass industry steel industry
- Ceramic industry non-ferrous metal industry
- Electrolytic aluminum industry power generation industry
- Hot surface fireproof lining Other fireproof backing
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