Zhengzhou Zhongkeda Refractory Materials Co., Ltd
Mullite Insulation Brick
Lightweight Mullite Brick | Mullite Insulation Brick Manufacturer
Lightweight mullite brick is a type of high-performance insulation refractory material with low bulk density and excellent thermal insulation properties. It is widely used in kiln lining systems where energy saving and heat resistance are required.
It is commonly used in tunnel kiln, rotary kiln, ceramic kiln, and other high temperature industrial furnaces.
Advantages of Lightweight Mullite Brick
🔥Low Thermal Conductivity
Reduce heat loss and improve thermal insulation efficiency.
⚡Lightweight Structure
Reduce furnace lining weight and kiln load.
🧱 Energy Saving Performance
Improve fuel efficiency in high-temperature furnaces.
🌡Excellent Thermal Stability
Stable performance under continuous high temperature conditions.
Types of Lightweight Mullite Brick
| By Grade/Model | By Temperature | By Application |
|
JM23 Insulation Brick Lightweight IFB for energy-saving backup insulation |
1260°C Mullite Brick Stable insulation for medium-temperature furnaces |
Tunnel Kiln Mullite Brick Reduce heat loss in tunnel kiln systems |
|
JM26 Insulation Brick Balanced strength and thermal insulationBalanced thermal insulation and mechanical strength |
1350°C Mullite Brick Better thermal shock resistance |
Rotary Kiln Mullite Brick Lightweight backup lining for rotary kiln |
|
JM28 Insulation Brick Higher compressive strength for hot zonesHigh-temperature IFB for demanding furnace insulation |
1430°C Mullite Brick High-temperature refractory insulation |
Ceramic Kiln Mullite Brick Energy-saving insulation for ceramic kilns |
Technical Data
| Item | JM23 | JM26 | JM28 | JM30 |
|
Al₂O₃(%) |
38-44 |
50-58 |
65-70 |
65-70 |
|
Fe₂O₃(%) |
1.0 | 0.9 | 0.8 | 0.7 |
|
Classification Temperature(℃) |
1350 | 1430 | 1540 | 1600 |
|
Bulk Density(g/cm³) |
0.6-1.0 |
0.6-1.0 |
0.6-1.0 |
0.6-1.0 |
|
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 | 2.0 |
|
Thermal conductivity400℃(W/m.k) |
0.25 | 0.27 | 0.32 | 0.41 |
|
Thermal Expansion1000℃(%) |
0.5 | 0.7 | 0.8 | 0.9 |
Tunnel Kiln Insulation
Used for kiln wall and roof insulation in continuous tunnel kiln systems to reduce heat loss and improve energy efficiency.
✔ Kiln Wall
✔ Kiln Roof
✔ Kiln Car
Rotary Kiln Backup Lining
Provides thermal insulation and reduces shell temperature in rotary kiln systems.
✔ Backup Lining
✔ Transition Zone
✔ Insulation Layer
Ceramic Kiln Insulation
Suitable for ceramic firing kilns requiring lightweight insulation materials.
✔ Roller Kiln
✔ Shuttle Kiln
Used as backup insulation to reduce heat loss in glass melting furnaces.
✔ Furnace Wall
✔ Roof Insulation
Carbon Furnace Heat Preservation
Used for thermal insulation and heat preservation in carbon baking furnace systems to improve thermal efficiency and reduce energy consumption.
✔ Carbon Baking Furnace
✔ Ring Furnace
✔ Anode Production Line
Customization Options
Density Customization
Available bulk density ranges for different thermal insulation requirements.
Size & Shape Customization
Standard sizes and special shapes can be customized according to furnace design.
Temperature Grade Customization
Different service temperature grades are available for various kiln applications.
Chemical Composition Adjustment
Al₂O₃ content and material composition can be adjusted based on working conditions.
FAQ:
Q: What temperatures can your mullite bricks withstand?A: Our bricks can withstand continuous working temperatures from 1260°C to 1450°C, depending on the grade. Special grades are available for higher thermal requirements.
Q: Are your mullite bricks available in different grades and densities?
A: Yes. We manufacture a variety of grades with different densities (0.6–1.2 g/cm³), thermal conductivity, and alumina content. Custom solutions can be provided based on your project needs.
Q: Can you customize brick sizes for our project?
A: Absolutely. In addition to standard sizes like 230×114×65mm, we offer full customization in shape, size, and even brick design (e.g., tongue-and-groove, arch bricks).
Q: What is your minimum order quantity (MOQ) for bulk orders?
A: For wholesale orders, our MOQ typically starts from 1 pallet (≈ 500–1000 bricks depending on size). However, we’re flexible for trial orders and long-term partnerships.
Q: How do you package and ship mullite bricks?
A: We use fumigated wooden pallets with plastic film wrapping and corner protection to ensure safe delivery. Shipping can be arranged by sea, air, or land according to your needs.
Q: Do you offer OEM or branding services?
A: Yes, we support OEM/ODM production with your brand, markings, and packaging requirements. We also provide neutral packaging for distributors.
Q: Can I get free samples for testing?
A; Yes. Free samples are available for material testing and compatibility evaluation. Please contact us with your specs to request a sample.
