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Bubble Alumina Bricks

Bubble Alumina Bricks

Bubble alumina bricks are a type of lightweight, high-temperature refractory material made from a specially formulated alumina material that contains a high volume of small, spherical voids or bubbles. These bubbles help to increase the brick's insulating properties, reduce its weight, and improve its resistance to thermal shock.

Bubble alumina bricks are commonly used in a range of high-temperature applications, including in furnaces, kilns, and incinerators. They are known for their excellent thermal insulation properties, which help to reduce energy consumption and improve process efficiency.

The unique structure of bubble alumina bricks also makes them highly resistant to chemical attack, corrosion, and erosion, making them well-suited for use in harsh environments where other materials would quickly degrade. They are also highly resistant to thermal shock, which helps to prevent cracking and premature failure in high-temperature applications.

Bubble alumina bricks are available in a range of sizes and configurations to meet the specific requirements of different applications. They can be custom designed to include features such as grooves, holes, and channels, making them easy to install and integrate into existing systems.

Overall, bubble alumina bricks are a highly versatile and effective solution for high-temperature applications that require exceptional insulation, chemical resistance, and thermal shock resistance. Their unique structure and properties make them ideal for use in a range of industries, including ceramics, metals, chemicals, and environmental applications.


Catalog No. CERAMICS
Size Customized
Material Al2O3
Purity 95% 99% 99.7%
Density 3.8~3.9 g/cm3


At CG Material, we offer high quality Bubble Alumina Bricks with exceptional purity and precision in terms of size. Our products range in diameter from 1mm to 100mm and have a purity level of up to 99.8%. We also provide custom manufacturing options for special shapes to meet specific needs.


Bubble Alumina Bricks Specifications

Classification temperature (°C) 1800°C/3270°F
Bulk Density (g/cm3) 1.65 Max 1.55
Cold Crushing Strength (kg/cm2) 100 Min 150
Thermal Conductivity (W/mK) at 350°C 0.9
Reheat shrinkage (1,700°C*8 hours, %) 0.06
Chemical Composition (%) Al2O3 98.0 Min 99.2
SiO2 0.3
Fe2O3 0.5 Max 0.2


Bubble Alumina Bricks Applications

Used as the main refractory lining for hot surfaces or as an insulation material behind other refractories in furnaces, flues, kilns and similar high-temperature industrial equipment.


We handle our products with care to ensure they remain in their original condition during storage and transportation and to preserve their quality.



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