JM28 Mullite Insulating Bricks are high-performance refractory materials designed for high-temperature insulation in industrial applications. With an alumina content of over 64% and a refractoriness of up to 1540°C, these bricks provide exceptional thermal insulation, energy efficiency, and durability under extreme conditions. They are ideal for use in industries requiring superior heat resistance, such as metallurgy, ceramics, cement, and glass production.
These bricks are versatile and can be used as hot-face linings or thermal insulation backing layers, reducing heat loss and enhancing the performance of furnaces, kilns, and other industrial equipment. The high-quality construction and low bulk density ensure long-lasting insulation performance, while minimizing energy consumption and operational costs.
Physicochemical Parameters
| Items | XT-JM23 | XT-JM26 | XT-JM28-1 | XT-JM28-2 | XT-JM30 |
|---|---|---|---|---|---|
| Service Temperature (℃) | 1260 | 1430 | 1540 | 1540 | 1650 |
| Bulk Density (g/cm³ ≤) | 0.5 | 0.8 | 0.9 | 0.95 | 1.05 |
| Mpa ≥ MOR | 0.7 | 1.1 | 1.5 | 1.6 | 2.0 |
| Mpa ≥ CCS | 1.0 | 2.0 | 2.2 | 2.3 | 2.7 |
| PLC (%) | 0.3 | 0.4 | 0.5 | 0.5 | – |
| ℃ × 8h | 1230 | 1400 | 1510 | 1510 | – |
| Reversible Coefficient of Thermal Expansion (1090℃ %) ≤ | 0.6 | 0.7 | 0.8 | 0.8 | 0.9 |
| Thermal Conductivity (w/m·k ≤) | 400℃ 0.15 | 0.28 | 0.32 | 0.33 | – |
| 600℃ | 0.17 | 0.31 | 0.34 | 0.36 | – |
| 800℃ | 0.19 | 0.33 | 0.36 | 0.39 | – |
| 1000℃ | 0.24 | 0.35 | 0.39 | 0.42 | – |
| Al2O3 (%) ≥ | 37 | 50 | 60 | 60 | 68 |
| Fe2O3 (%) ≤ | 1.0 | 1.0 | 0.8 | 0.8 | 0.7 |
| SiO2 (%) ≤ | 45 | 43 | 36 | 36 | 29 |
Product Features
- High Refractoriness: Capable of withstanding temperatures up to 1540°C, these bricks are perfect for industries that require superior heat resistance.
- Low Bulk Density: At just 0.8 – 1.0 g/cm³, JM28 bricks offer excellent thermal insulation, helping to improve furnace efficiency and reduce energy costs.
- Compressive Strength (CCS): With a compressive strength range of 2.2 – 2.7 MPa, these bricks provide durability and stability even under moderate to high mechanical stress.
- Thermal Shock Resistance: The high alumina content and structural integrity ensure excellent resistance to thermal shock, preventing cracks and spalling from rapid temperature changes.
- Thermal Conductivity: With a thermal conductivity of 0.32 W/m·K at 400°C, JM28 bricks effectively minimize heat loss, contributing to greater energy efficiency in industrial systems.
- Custom Sizes and Shapes: Available in standard 230*114*65mm sizes, with custom sizes and shapes available to meet your specific requirements.
Applications
JM28 Mullite Insulating Bricks are highly suitable for various high-temperature industrial applications, including:
- Kilns and Furnaces: Used as refractory linings or insulation layers in rotary kilns, cement furnaces, glass melting furnaces, and other high-temperature systems.
- Thermal Insulation Backing: Ideal as a thermal insulation backing layer for other refractory materials, enhancing overall insulation performance and heat retention.
- Metallurgical Industries: Perfect for steel production, aluminum smelting, and other non-ferrous metal applications requiring maximum heat resistance and thermal stability.
- Ceramic and Glass Industries: Suitable for use in ceramic kilns, glass melting furnaces, and other applications where thermal stability and low thermal conductivity are critical.
- Power Generation: Used in high-temperature power plants, reducing heat loss and improving energy efficiency.
Customization Services
We understand that each application requires specific solutions. Our JM28 Mullite Insulating Bricks can be customized to meet your needs:
- Custom Sizes: Available in various sizes beyond the standard 23011465mm to fit your furnace, kiln, or other industrial equipment.
- Special Shapes: We offer custom molds for special shapes like arch bricks, anchor bricks, and complex geometries.
- Performance Adjustments: We can modify the thermal conductivity, compressive strength, and other physical properties to meet the unique demands of your operation.
Packing and Shipping Details
Our JM28 Mullite Insulating Bricks are carefully packaged to ensure safe delivery:
- Packaging Material: Durable, eco-friendly packaging materials are used to protect the bricks during transport.
- Bulk Orders: Large orders are securely palletized for easy handling and added protection.
- Custom Packaging: Custom packaging options are available upon request to meet your specific storage and shipping requirements.
About Xintai Refractory
Xintai Refractory is a leading manufacturer specializing in high-quality refractory materials. With over 20 years of experience in the industry, we offer a wide range of products, including refractory bricks, insulating materials, and monolithic refractories. We provide high-performance solutions for industries such as steel, cement, glass, ceramics, and power generation.
Our commitment to quality, innovation, and customer satisfaction ensures that we deliver top-tier products for even the most demanding high-temperature applications. Contact us today for more information about our JM28 Mullite Insulating Bricks and other high-performance refractory materials.
