Insulating Fire Bricks - Kerui Refractory

Insulating fire bricks are the lightweight brick used in high-temperature kilns and equipment. They have low thermal conductivity. Kerui offers a variety of types and custom bricks. Additionally, we provide other refractory materials that complement these bricks, such as castables. Therefore, please send us your construction or repair plans. We can offer matching refractory solutions and materials based on your needs.

Kerui Insulating Fire Bricks for Sale

Different Types of Kerui Insulating Fire Bricks

Based on varying operating temperatures and environments, we primarily offer the following types and grades of insulating firebricks. They can be used at temperatures below 1800 degrees Celsius.

Clay Insulating Firebricks

Grade: NG135-1.3, NG135-1.2, NG130-1.0, NG125-0.8, NG120-0.6;
Al2O3: ≥30-48%;
Bulk Density: ≥0.6-1.3g/cm³;
Cold Crushing Strength: ≤1.3-5MPa;
Thermal Conductivity: 0.25-0.55W/m·k;

Kerui Mullite Insulation Bricks was Exported to the World

Mullite IFB Bricks

Grade: LG140-1.2, LG140-1.0, LG140-0.8L;
Al2O3: ≥48%;
Bulk Density: ≤0.8-1.2 g/cm³;
Cold Crushing Strength: ≥2.5-4.5 MPa;
Thermal Conductivity: ≤0.35-0.55W/m·k;

High-quality High Alumina Insulation Brick

High Alumina Insulation Firebrick

Grade: JM-23 (KR-23), JM-26 (KR-26), JM-28 (KR-28), JM-30 (KR-30);
Al2O3: ≥38-73%;
Bulk Density: ≤0.55-1.1 g/cm³;
Cold Crushing Strength: 0.17-0.43 MPa;
Thermal Conductivity: 0.17-1.5W/m·k;

Kerui Alumina Bubble Bricks with Good Features

Alumina Bubble Firebrick Insulation

Grade: 85, 90, 99;
Al2O3: ≥90-99%;
Bulk Density: ≤1.0-1.2 g/cm³;
Cold Crushing Strength: ≥2.0-5.0 MPa;
Thermal Conductivity: ≤0.8-1.5W/m·k;

Kerui Lightweight Silica Insulation Bricks

Silica Insulating Soft Fire Bricks

Grade: GGR-1.00, GGR-1.10, GGR-1.15, GGR-1.20;
SiO2: ≥91%;
Bulk Density: ≤1.4-1.7 g/cm³;
Cold Crushing Strength: ≥9-12 MPa;
Thermal Conductivity: 0.55-0.70W/m·k;

Different Shapes of Insulating Fire Brick for Sale

The standard dimensions are: 230*114*65mm. We offer the following commonly used shapes of insulation bricks for various high-temperature kilns:

Standard (straight), arch, wedge, key, side skew, end skew, side feather, end feather (neck brick), split, bonder, circle, dome, tile, internal plinth return, bullnose stop, birthmouth brick, external plinth, internal plinth, cant stop, double cant, external angle, bullnose header, double bullnose, radial stretcher, etc.

Note: Kerui factory has a large stock of standard-grade straights.
Shapes and Sizes of Kerui Insulating Fire Brick

Custom Shaped Insulating Fire Bricks

Kerui supports the customization of various shaped insulating bricks. Please send us the drawings, and we will confirm the molds for production with you.
Custom Shaped Insulating Fire Bricks

Advantages of Kerui IFB Bricks

Good Features:

Lightweight;

Low thermal conductivity, energy-saving;

Excellent thermal shock resistance;

Outstanding strength;

Excellent Quality:

Made from high-quality raw materials;

Precise dimensions;

ISO certified;

Subjected to strict quality inspections;

Comprehensive Services:

Factory visits and inspections supported;

Beautiful and high-quality packaging;

Fast shipping within 15-30 working days;

Customization services available.

Applications of IFB Insulation Fire Bricks

Lightweight insulation fire brickss are primarily used in hot face applications in the following industries: glass, ceramics, electrolytic aluminum, steel and aluminum, non-ferrous metals, power generation, petroleum, and so on.

These bricks are used for kilns, lining furnaces, reactors, and other carriers for holding and transporting hot mediums. View Kerui Linkedin to see some site applications.

Applications of Kerui High Alumina Insulation Brick