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Mullite Insulation Brick from China: High-Quality Suppliers and Factory for Superior Thermal Management 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
What is the temperature limit for Mullite insulating bricks?
Mullite insulating bricks can withstand high classification temperatures ranging from 1260°C to 1540°C depending on the specific grade (such as FJM23, FJM26, or FJM28).
What are the primary applications of Mullite bricks?
They are commonly used in glass furnace insulation, ceramic roller kilns, tunnel kilns, cracking furnaces, hot blast furnaces, and other high-temperature industrial furnaces.
Why do Mullite bricks have low thermal conductivity?
Low thermal conductivity is designed to minimize heat loss and maximize energy efficiency in industrial applications by keeping heat contained inside the furnace.
Are Mullite insulating bricks chemically stable?
Yes, Mullite insulating bricks exhibit excellent chemical stability, offering strong resistance to chemical attacks and corrosion in harsh industrial environments.
How does thermal expansion affect Mullite bricks?
They have low thermal expansion, which significantly reduces the risk of cracking, spalling, and structural failure during rapid temperature fluctuations.