Insulating Fire Brick

Temperature Grade

1260°C (2300°F) - 1760°C (3200°F)


alumina, silica

CCEFIRE® DJM Insulating Fire Brick is widely used as a hot face refractory lining or backup insulation in various industrial furnaces. It can be customized to specific dimensions for standard, special shapes, and refractory insulation products for specific areas such as kiln mouths.

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CCEFIRE® DJM Insulating Fire Brick

CCEFIRE® DJM Series Mullite insulation brick is a new type of refractory material, which can directly contact with fire, characterized with high temperature resistance, lightweight, low thermal conductivity, good energy saving effect, specially suitable for cracking furnace, hot blast furnace, ceramic roller kiln, porcelain kiln extraction, glass crucible and various electric furnaces as lining. It is an ideal product of energy efficiency and longevity. 


  • Excellent Thermal Insulation

    CCEFIRE® Insulating Fire Brick has a low thermal conductivity, effectively blocking heat transfer and providing exceptional insulation.

  • Accurate Dimensions

    Precise external dimensions speed up bricklaying, reduce the use of refractory mortar, ensure the strength and stability of the masonry, and extend the lining's service life.

  • Fire Resistance

    CCEFIRE® Insulating Fire Brick exhibits excellent fire resistance and can maintain stability in high-temperature environments, providing additional safety in case of a fire.

  • Customizable Products

    They can be processed into special shapes to reduce the number of bricks and joints.

Features of DJM Insulating Fire brick

  • Low Thermal Conductivity, with Good Thermal Insulation Effect

    CCEFIRE® DJM insulating fire brick boasts low thermal conductivity, providing exceptional thermal insulation. This helps maintain stable temperatures within furnaces and thermal equipment, ensuring energy efficiency and reduced operational costs.

  • Low Heat Capacity for Enhanced Energy Savings

    Thanks to its low thermal conductivity, CCEFIRE® DJM insulating fire brick has a low heat capacity. This means it accumulates minimal heat energy, demonstrating significant energy-saving effects, especially in intermittent operations where rapid heating and cooling cycles are common.

  • Low Impurity Content for High Refractory Performance

    CCEFIRE® DJM insulating fire brick features very low levels of impurities, such as iron and alkali metal oxides. This characteristic enhances its refractory performance, making it highly resistant to high temperatures and chemical attacks. The higher aluminum content ensures the brick maintains its integrity and performance even in reducing atmospheres.

  • High Compressive Strength at Elevated Temperatures

    CCEFIRE® DJM insulating fire brick exhibits high compressive strength under high temperatures. This ensures the structural integrity of the brickwork in furnaces and other high-temperature environments, providing long-term durability and reliability.

  • Precise Dimensions for Efficient Installation

    The accurate appearance and size of CCEFIRE® DJM insulating fire brick speed up the brick-laying process, reducing the amount of refractory mortar needed and ensuring the strength and stability of the brickwork. This precision extends the life of the furnace lining and minimizes maintenance needs.

  • Customizable Shapes for Reduced Joints and Enhanced Efficiency

    CCEFIRE® DJM insulating fire brick can be processed into special shapes, reducing the number of bricks and joints required in the construction. This customization improves the overall structural integrity and efficiency of the insulation, enhancing the performance and lifespan of thermal equipment.

Application of DJM Insulating Fire brick

DJM insulating fire brick: Optimal Solution for High-Temperature Furnace Linings

DJM insulating fire brick can be directly used for high temperature furnace lining; DJM insulating fire brick has been widely used in shuttle kiln, roller kiln, glass and petrochemical furnace lining.

Specifications & Sizes

CCEFIRE ® DJM Insulating Fire brick

Item DJM23C DJM-23 DJM-24 DJM-26 DJM-28 DJM-30 DJM-32
Classification Temp(℃) 1260 1260 1300 1430 1540 1650 1760
Bulk Density(g/cm3) 0.5 0.6 0.7 0.8 0.9 1 1.25
Crushing Strength(MPa) 1.2 1.2 1.4 1.6 2.1 2.5 3.5
Modulus of Rupture(MPa) 1 0.9 1.2 1.4 1.6 2.1 2.1
Permanent linear change (CT-30℃x24h)% 0.5 0.5 0.6 0.4 0.5 0.9 0.9
Reversible thermal expansion at 1100℃ 0.5 0.5 0.6 0.7 0.8 0.9 1.1
Thermal conductivity (W/m.k) 400 ℃ 0.12 0.12 0.14 0.27 0.32 0.41 0.49
600 ℃ 0.14 0.14 0.16 0.29 0.34 0.43 0.5
800 ℃ 0.16 0.17 0.18 0.31 0.36 0.44 0.51
1000 ℃ 0.18 0.19 0.2 0.33 0.38 0.45 0.53
1200 ℃ - - - 0.3 0.41 0.47 0.56
Chemical Analysis(%) Al2O3 37 37 44.5 58 67 73 77
Si02 47 44.4 41.2 39.1 31 25.1 21.5
Fe2O3 0.7 0.7 0.7 0.7 0.6 0.5 0.4
Common size 230 x 114 x 65/75mm | 9 ”x 4.5” x 2.5”/3”
or customized size

Custom size are available.Contact Us

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Adhere to Strict Quality Control System

CCEWOOL® products have won a number of authoritative certifications, including rach certification, Fraunhofer laboratory certification and CE certification, which fully prove the excellent quality of our products. These certificates are not only a strong guarantee of the quality of our products, but also ensure a worry-free process for your order. If you need to know more certification details or request relevant certificates, please feel free to contact us!

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