The JM23 Mullite Insulating Bricks are advanced refractory materials designed for thermal insulation in high-temperature industrial applications. Made from high-purity mullite, these bricks offer outstanding insulation properties and excellent thermal stability. With a service temperature of up to 1260°C, they are highly effective at reducing heat loss in furnaces, kilns, and other industrial equipment, optimizing energy efficiency and reducing operational costs.

These bricks are suitable for use as hot-face refractory linings or as thermal insulation backing layers for other refractory materials. The lightweight design, combined with superior thermal insulation capabilities, ensures long-lasting performance under harsh operating conditions.

Physicochemical Parameters

Refractory Material Specifications

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: Withstanding temperatures up to 1260°C, these bricks are ideal for industries that require superior heat resistance.
Low Bulk Density: At just 0.5 g/cm³, JM23 bricks offer excellent insulation performance, helping to reduce energy consumption and improve furnace efficiency.
Compressive Strength (CCS): The bricks have a robust compressive strength of 1.0 MPa, providing durability even under moderate mechanical stress.
Thermal Shock Resistance: These bricks exhibit excellent thermal shock resistance, ensuring they can withstand rapid temperature fluctuations without cracking or spalling.
Thermal Conductivity: With a thermal conductivity of 0.15 w/m·k at 400°C, these bricks efficiently minimize heat loss, enhancing the energy efficiency of industrial equipment.
Custom Sizes: Available in standard 230*114*65mm dimensions, with the option for custom sizing to suit specific operational requirements.

Applications

JM23 Mullite Insulating Bricks are ideal for a wide range of high-temperature industrial applications, including:

Kilns and Furnaces: Excellent for use as a refractory lining or insulation layer in rotary kilns, cement furnaces, glass melting furnaces, and other high-temperature systems.
Thermal Insulation Backing: Perfect as a backing layer for other refractory materials, enhancing overall insulation efficiency and thermal protection.
Metallurgical Industries: Ideal for use in steel making, aluminum production, and other non-ferrous metal smelting processes that require efficient heat management.
Ceramic and Glass Industries: Suitable for use in ceramic kilns and glass melting furnaces, where thermal stability and low heat conductivity are essential.
Power Generation: Perfect for use in high-temperature power plants, reducing heat loss and improving energy efficiency.

Customization Services

We understand that different applications require specific solutions. Our JM23 Mullite Insulating Bricks can be customized according to your needs:

Custom Sizes: Tailored to fit specific dimensions for your furnace, kiln, or other high-temperature systems.
Special Shapes: We offer custom shapes like arch bricks, anchor bricks, or any complex geometry you may need for your setup.
Performance Adjustments: We can modify the material’s thermal conductivity, strength, and other properties to meet your specific operational requirements.

Packing and Shipping Details

Our JM23 Mullite Insulating Bricks are carefully packaged to ensure they arrive safely at your facility:

Packaging Material: We use durable, eco-friendly packaging materials to protect the bricks during transit.
Bulk Orders: Larger orders are securely palletized for easy handling and added protection.
Custom Packaging: Custom packaging options are available upon request to meet specific storage or shipping needs.

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 to inquire about our JM23 Mullite Insulating Bricks or any of our other high-performance refractory materials.