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Hengli Mullite Insulation Brick Suppliers in China - High-Quality Factory Manufacturing with Accurate Tolerances
Features
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.
Low Thermal Conductivity
Low thermal conductivity helps in minimizing heat loss and improving energy efficiency in industrial applications.
Good Chemical Stability
Mullite bricks are resistant to chemical attack and corrosion, which enhances their durability in harsh environments.
High Compressive Strength
They possess high compressive strength, which allows them to maintain structural integrity under heavy loads and high temperatures.
Low Thermal Expansion
Mullite insulating bricks exhibit low thermal expansion, reducing the risk of cracking and spalling under temperature fluctuations.
Lightweight
These bricks are lightweight, which makes them easier to handle and install while also reducing the overall weight load on structures.
Accurate Dimensions
They are manufactured to precise dimensions, ensuring a tight fit and minimizing gaps in insulation, which further improves thermal efficiency.
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 (FAQ)
What temperature range can Mullite insulating bricks withstand?
Mullite insulating bricks can typically withstand high temperatures ranging from 1000°C to 1650°C, making them ideal for high-temperature kilns and industrial furnaces.
How does low thermal conductivity benefit industrial applications?
Low thermal conductivity minimizes heat loss through the furnace walls. This significantly improves energy efficiency and reduces operating costs in industrial processes.
What are the typical applications for Mullite bricks?
They are commonly used in glass furnace sidewalls and bottom insulation, port insulation, tin bath roofs, ceramics roller kilns, tunnel kilns, pusher kilns, and other industrial furnaces requiring minimal mortar joints.
Why is the low thermal expansion of Mullite bricks important?
Low thermal expansion ensures the bricks do not expand or contract excessively during temperature fluctuations, thereby reducing the risk of cracking, spalling, and structural failure.
Are these test indexes absolute specifications for design?
No, the provided indexes represent average test results under standard procedures and are subject to variation. They should not be used as final specifications or for creating contractual obligations.