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Mullite Insulation Brick from China Factory - High-Quality Suppliers for Energy-Efficient Solutions
Features
1. High Temperature Resistance
Mullite bricks can withstand very high temperatures, typically ranging from 1000°C to 1650°C, making them suitable for use in various high-temperature furnaces and kilns.
2. Low Thermal Conductivity
Low thermal conductivity helps in minimizing heat loss and improving energy efficiency in industrial applications.
3. Good Chemical Stability
Mullite bricks are resistant to chemical attack and corrosion, which enhances their durability in harsh environments.
4. High Compressive Strength
They possess high compressive strength, which allows them to maintain structural integrity under heavy loads and high temperatures.
5. Low Thermal Expansion
Mullite insulating bricks exhibit low thermal expansion, reducing the risk of cracking and spalling under temperature fluctuations.
6. Lightweight
These bricks are lightweight, which makes them easier to handle and install while also reducing the overall weight load on structures.
7. Accurate Dimensions
They are manufactured to precise dimensions, ensuring a tight fit and minimizing gaps in insulation, which further improves thermal efficiency.
8. Applications
Mullite insulating bricks are widely used in the lining of cracking furnaces, hot blast furnaces, ceramic kilns, electric furnaces, and other high-temperature industrial furnaces.
These features make mullite insulating bricks a preferred choice in industries requiring robust and efficient thermal insulation solutions.
Typical Application
Glass furnace sidewall and bottom insulation, port insulation, tin bath roof, etc.
Ceramics roller kiln, tunnel kiln, pusher kiln, etc.
Other industrial furnaces where less mortar joint is required.
Typical Indexes
| Item | Unit | FJM23 | FJM26 | FJM28 | FJM25-1350 |
|---|---|---|---|---|---|
| Classfication Temperature | ℃ | 1260 | 1430 | 1540 | 1350 |
| Bulk Density | Kg/m³ | 650 | 800 | 900 | 1250 |
| Cold Crushing Strength | MPa | 1.3 | 2.5 | 2.8 | ≥ 6 |
| Modules of Rupture | MPa | 1 | 1.4 | 1.7 | -- |
| Reheating Linear Change ℃X12h | % | -0.2 | -0.3 | -0.5 | -0.5 |
| 1230 | 1400 | 1500 | 1350 | ||
| Thermal Conductivity @350 ± 10℃ | W/m·K | 0.18 | 0.24 | 0.3 | 0.54 @600℃ |
| Al2O3 | % | 42 | 55 | 65 | 52 |
| Fe2O3 | % | 0.8 | 0.8 | 0.6 | 2 |
All data above are average test results under standard procedure and are subjected to variation. Result should not be used for specification purpose or creating any contractual obligation. For more information on the safety application or materials, please contact with our sales engineer.
Frequently Asked Questions
Q What is the temperature limit for Mullite insulating bricks?
Mullite insulating bricks can withstand high temperatures typically ranging from 1000°C up to 1650°C, making them highly suitable for various industrial kilns and high-temperature furnaces.
Q How do Mullite bricks help in energy conservation?
Due to their low thermal conductivity, these bricks effectively minimize heat loss from the furnace lining, which significantly improves the overall energy efficiency of industrial operations.
Q Are Mullite insulating bricks resistant to chemical corrosion?
Yes, Mullite bricks possess excellent chemical stability, allowing them to resist chemical attacks and corrosion, which increases their durability in harsh working environments.
Q What are the typical applications of Mullite insulating bricks?
They are commonly used in glass furnace sidewalls and bottom insulation, ceramic roller kilns, tunnel kilns, pusher kilns, cracking furnaces, hot blast furnaces, and electric furnaces.
Q Why is the low thermal expansion of Mullite bricks important?
Low thermal expansion minimizes structural movement and reduces the risk of cracking or spalling when the bricks are exposed to rapid temperature fluctuations.
Q Are the values in the index table fixed specifications?
No, the data provided are average test results under standard procedures and are subject to variation. They should not be used as absolute specification standards or for contractual obligations.