zhengzhou kerui (group) refractory co.,ltd
Provide Leading Solutions for High Temperature Kilns

Corundum Mullite Brick

The corundum mullite brick is an excellent refractory product for furnaces. The main raw material is a composite of corundum and mullite with high purity. It brings good performance in high temperature applications.

  • 75-88%

    Al2O3 (≥)

  • 2.6-3.0g/cm³

    Bulk Density

  • 1650-1700℃

    Refractoriness Underload

  • 80-120MPa

    Cold Crushing Strength


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KERUI Corundum Mullite Brick for Sale

Specification of KERUI Corundum Mullite Brick

According to the China Refractory Materials Standardization Technical Committee, here are common specifications of corundum mullite bricks. By the way, if you have requirements on the ratio of materials or the manufacturing process, Kerui supports customization. Welcome to tell us about the ideal performance of corundum mullite brick, Kerui is willing to customize the mullite refractory products.

ω (Al2O3)/%μ088 85 80 75
ω (Fe2O3)/%μ00.80 1.0 1.0 1.2
Apparent Porosity/%μ015(17)16(18)18(20)18(20)
Bulk Density (g/cm³)μ03.00 2.852.752.60
Cold Crushing Strength/MPaμ012010010080
0.2MPa 0.6% Refractoriness Underload/℃μ0 1700168016501650
Permanent Linear Change (1500℃*2h)/%Xmin

KERUI Corundum Mullite Brick Price

KERUI corundum mullite brick is about 7.14-10.00 USD per piece and 1500-2100 USD per ton (about 210 pieces per ton). For different requirements of customers, Kerui will offer some discounts. If you consider purchasing fire brick, here are details for your reference:

Ton Price

  • 1-25 tons: 1600-2100 USD;
  • 25-100 tons: 1550-2000 USD;
  • More than 100 tons: 1500-1900 USD;

Piece Price

  • 500-5000 pieces: 7.62-10.00 USD;
  • 5000-20000 pieces: 7.38-9.52 USD;
  • More than 20000 pieces: 7.14-9.04 USD;

Kerui Customers

Features of KERUI Corundum Mullite Brick

Good Thermal Conductivity

This brick exhibits excellent thermal conductivity, allowing for efficient heat transfer in high-temperature applications. Correspondingly, this property ensures uniform heat distribution and helps maintain consistent temperatures throughout the refractory structure. Good thermal conductivity is essential for optimizing energy efficiency and overall performance.

High Refractoriness

One of the standout features of KERUI corundum mullite brick is its exceptional resistance to high temperatures. Like corundum brick, it can withstand extreme heat and structural damage. Therefore, this makes it suitable for use in furnaces, kilns and other industrial applications where temperatures can reach up to 1800°C (3272°F) or higher.

Excellent Thermal Stability

Thermal stability is another notable feature of this corundum product. It retains mechanical strength and dimensional stability even when subjected to rapid or extreme temperature changes. Besides, this property is effective to minimize the risk of thermal shock and ensures the longevity and reliability of the whole refractory structure.

Oxidation Resistance

KERUI corundum mullite bricks are highly resistant to oxidation, which makes them ideal for environments where exposure to oxygen or other oxidizing agents is present. Moreover, the composition and structure prevent the formation of oxides and maintain their integrity even under prolonged exposure to high temperatures and oxidative conditions.

Chemical Erosion Resistance

It is highly resistant to chemical erosion. Therefore, it’s suitable for applications where contact with corrosive materials or harsh chemicals is expected. Consequently, this high quality product can withstand the corrosive effects of acids, alkalis and other chemical substances. As a result, it helps to prolong the service life and reliable performance.

Wear Resistance

In addition to its thermal and chemical properties, KERUI corundum mullite bricks offer excellent resistance to wear and abrasion. It can withstand mechanical forces like friction and impact. There is no damage or loss of structural integrity. Moreover, this refractory fire brick is suitable for applications like refractory lining comes into contact with abrasive materials.

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KERUI Corundum Mullite Brick
Corundum Mullite Bricks for Sale
Corundum Mullite Bricks for Sale

Key Points of KERUI Corundum Mullite Brick Manufacturing Process

High Pressure

High pressure compaction ensures the proper compaction of the raw materials, which results in a dense and uniform brick structure. Besides, the use of high pressure helps to eliminate voids and air pockets. this enhances the mechanical strength and resistance to thermal shock.

Kerui Advantage:

High Tonne Press Machine
Advanced Pressure Technology
Precise Ratio

The precise ratio of corundum and mullite is essential to achieve the desired properties and characteristics of the final product. Deviations from the optimal ratio can result in variations in the brick’s physical properties, such as thermal conductivity, thermal expansion and chemical resistance. If you’re interested in more information, welcome to follow Kerui Instagram.

Kerui Advantage:

Automatic Batching System
Strict Quality Control
High Sintering Temperature

For corundum mullite bricks, high sintering temperature is important to achieve maximum density and a high degree of crystallization. Generally, temperatures above 1600°C (2912°F) are employed to ensure the proper formation of corundum and mullite phases, which contribute to the desired properties of the bricks.

Kerui Advantage:

2*168m Tunnel Kiln
PLC System
KERUI Corundum Mullite Brick Factory
KERUI Corundum Mullite Brick Factory


If you need high quality corundum mullite brick for sale, it’s wise to consider Kerui as your preferred manufacturer. Welcome to contact Kerui Refractory China for a quick reply!

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