High Alumina Insulation Brick

High alumina insulation brick is the hot-selling furnace insulation brick manufactured by Kerui Refractory. In addition, it has the characteristics of high compressive strength, good thermal shock resistance, reduced furnace wall heat capacity and high furnace thermal efficiency.

  • Al2O3(≥): 48%
  • Bulk Density: 0.5g/cm3 – 1.2g/cm3
  • Cold Crushing Strength: 1.0MPa – 4.0MPa
  • Thermal Conductivity: 0.20 W/(m·K) – 0.55W/(m·K)

KERUI High Alumina Insulation Brick

Learn About High Alumina Insulation Brick

High Porosity
Low Volume Density
Good Thermal Insulation Effect
High Mechanical Strength
Low Thermal Conductivity
Long Lifespan

High alumina insulation brick is also known as High alumina lightweight insulation brick. Its alumina content is above 48%. Moreover, it is a refractory product with a porous structure. In addition, the performance of high-alumina insulation brick is better than that of thermal insulation silica and lightweight clay bricks. Its refractory degree is as high as 1750℃(3182℉) and the maximum operating temperature is 1350℃(2462℉). Therefore, it is an essential energy-saving, thermal insulation refractory material for various industrial kilns.

In addition, Kerui sells high-quality and low-priced high-aluminum insulation bricks. We can provide a wide variety of insulating high alumina brick sizes and specifications at competitive prices. In other words, Kerui can process high-aluminum insulation brick into various shapes according to customers’ design needs. Feel free to contact us or email us for a free quote or price list.

High Alumina Insulation Brick
Kerui Excellent High Alumina Insulation Brick
High Alumina Insulation Brick for Sale

Technical Data of High Alumina Insulation Brick

This table is formulated concerning Chinese refractory industry standards. Besides, design specifications and requirements will vary for each industrial equipment and user. However, we can optimize the combination according to the requirements put forward by users. Therefore, we can meet the user’s requirements and achieve the working conditions and service life of industrial equipment. Customers can contact us for more information.

ω (Al2O3)/%μ048
ω (Fe2O3)/%μ02.0
Bulk Density/(g/cm³)μ01.
Cold Crushing Strength/MPaμ04.
σ1.0 0.50.2
Xmin4.0 3.0 2.22.0 1.51.0
Permanent Linear Change/% (T/℃*12h)Test Temperature T/℃140013501250
Thermal Conductivity Coefficient/[W/(m·K)] ≤
Average Temperature (350±25℃)
0.550.50 0.350.30 0.250.20

Application of High Alumina Insulation Brick in Kilns and Furnaces

The industries where we apply it include petrochemical, machinery, ceramics, steel and other industries. Moreover, we widely apply lightweight high-aluminum insulation bricks to the insulation layers of various industrial furnaces and kilns.

Such as carbon black furnaces, gasification furnaces, hydrogen production furnaces, heating furnaces, coking furnaces shuttle kiln, ceramic tunnel kiln, roller kiln, shuttle kiln, wall kiln, etc.

Heating Furnace
Heating Furnace
Coke Oven
Coke Oven


Kerui Company’s Strength in Producing Insulation Bricks

Patent Certificates

Kerui has multiple patent certificates in the field of refractory material. For example, EMS, CE, QMS and OHSM. These patent certificates are a recognition of Kerui’s R&D and innovation capabilities. Moreover, this also proves Kerui’s unique technology and solutions in refractory brick production. Therefore, we are able to offer refractory brick products with unique properties and features.

Advanced Technology

Our company has introduced and applied the latest refractory material production technology. We have an experienced and skilled R&D team that continuously carries out technological innovation and process improvement. Kerui uses advanced automated production equipment and processes. So, we can ensure that the quality of fire bricks meets the highest standards in the industry.

Rich Experience

For many years, Kerui has been committed to the research and development, production and sales of discount fire brick. By working closely with partners and customers in various industries, Kerui has accumulated a wealth of experience and knowledge. Moreover, we can provide customized solutions according to the needs of different industries.

One-Stop Service

From product design and customization to production and after-sales support, Kerui provides a one-stop service. Kerui technical engineers will work closely with customers to understand their needs and provide professional suggestions and solutions. That is to say, this ensures that customers receive high-quality refractory insulation bricks and satisfactory after-sales support.

Kerui CE Certificate
CE Certificate
Kerui EMS Certificate
EMS Certificate
Kerui OHSM Certificate
OHSM Certificate
Kerui QMS Certificate
QMS Certificate

Kerui Fire Bricks Manufacturers


To sum up, Kerui is a reliable supplier of high-aluminum insulation bricks. In addition, we also offer huge discounts to customers when purchasing refractory insulation bricks from Kerui. Promotions are ongoing and welcome customers to visit our factory or purchase products. In addition, for more information, you can follow us on Facebook!

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