Lightweight Mullite Insulation Brick For Industrial Furnace High-Temperature Refractory
Lightweight Mullite Insulation Brick For Industrial Furnace High-Temperature Refractory
Leadsun supplies several grades of insulating bricks for applications ranging from 1260°C to 1760°C. Each grade is designed to meet specific thermal and physical requirements, and every brick is precisely machined to tight dimensional tolerances after firing.
These insulating bricks are manufactured from high-purity clays and selected ceramic materials. Carefully graded organic materials burn out during firing, creating a uniform pore structure that ensures excellent insulation performance.
Technical data
| Item | JM23 | JM26 | JM28 | JM30 |
|---|---|---|---|---|
| AL2O3(%) | 38-44 | 50-58 | 65-70 | 70-73 |
| Fe2O3(%) | 1.0 | 0.9 | 0.8 | 0.7 |
| Classification Temperature (℃) | 1350 | 1430 | 1540 | 1600 |
| Bulk Density (g/cm3) | 0.6-1.0 | 0.8-1.0 | 0.9-1.0 | 1.0-1.3 |
| Reheating Linear Change (%) CT-30 ℃X 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 | 2.0 | 2.5 | 3.0 |
| Thermal conductivity 400℃(W/m.k) | 0.25 | 0.27 | 0.32 | 0.41 |
| Thermal Expansion1000℃(%) | 0.5 | 0.7 | 0.8 | 0.9 |
Key Advantages
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Lightweight and Energy-Efficient
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Low Thermal Conductivity
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Excellent High-Temperature Insulation
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Long Service Life for Furnace Linings
Applications
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Industrial furnaces and kilns (hot-face linings)
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Energy-saving furnace systems (backup insulation)
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High-temperature flue gas ducts
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Sulfur recovery units in petrochemical plants
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Hot blast stoves for ironmaking and steelmaking
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