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1.Product description of JM28 mullite insulation brick
JM28 insulating brick is made of high-purity materials through a unique process, so it has the advantages of stable volume, good thermal stability, high strength, low thermal conductivity, etc.
JM28 insulating brick is an ideal energy-saving product, which can be widely used in lining or insulating layer of various industrial furnaces in metallurgical industry, ceramic industry, chemical industry and mechanical industry.
2. 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 lining
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 |