High-Performance Refractory Alumina Bubble Brick for Extreme Heat Insulation

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Insulation and Refractory Materials

lightweight alumina bubble brick
refractory alumina bubble brick
alumina bubble brick for sale
alumina bubble brick for sale
lightweight alumina bubble brick
refractory alumina bubble brick
alumina bubble brick for sale
alumina bubble brick for sale
Refractory Alumina Bubble Brick

Laurel’s lightweight alumina bubble brick is a top-tier refractory alumina bubble brick specifically engineered for ultra-high-temperature applications. Made from over 99% pure alumina hollow spheres, this brick offers outstanding insulation performance, low thermal conductivity, and exceptional resistance to mechanical and chemical stress. It is ideal for industries seeking maximum thermal efficiency in lightweight form.

This alumina bubble brick for sale delivers continuous performance at service temperatures reaching up to 1800°C, making it a trusted solution for hydrogen furnaces, vacuum sintering units, gas reactors, and high-temp metallurgy equipment.Available alumina bubble brick for sale worldwide with export-grade packaging.


Product Details


Application

Vacuum & Hydrogen Furnaces: Ultra-high thermal barrier for sintering

Petrochemical Plants: Lining for endothermic gas generators and reactors

Metallurgical Systems: Kilns, crucibles, and induction furnace linings

Semiconductor & Electronics: Heat shielding in fabrication chambers

Aerospace & Defense: Thermal protection systems in rocket and re-entry vehicles



Table parameters

Item

Alumina Bubble Brick

Types

Unit

85#

90#

99#

The Highest Service Temperature

1680

1700

1800

Al2O3

%

≥85

≥90

≥99

SiO2

%

≤15

≤8

≤0.2

Fe2O3

%

≤0.2

≤0.2

≤0.2

Bulk Density

g/cm3

1.4-1.7

1.4-1.7

1.4-1.7

Cold Crushing Strength

MPa

≥12

≥10

≥9

Refractoriness Under Load (0.1MPa, 0.6%)

≥1650

≥1770

≥1800

Reheating Linear Change Rate (1600℃*3h)

%

±0.3

±0.3

±0.3

Thermal Conductivity (Average temperature 800℃ )

W/(m*k)

≤0.8

≤1.3

≤1.5


Features

Features

Exceptional Thermal Resistance

This refractory alumina bubble brick performs consistently at 1700°C+, retaining its strength, shape, and insulating capacity over long periods.

Superior Thermal Insulation

The microstructure of the lightweight alumina bubble brick, filled with hollow alumina spheres, drastically reduces heat transfer, contributing to energy efficiency.

Customizable Formats

Whether you need standard bricks or specialized shapes, Laurel provides tailored alumina bubble brick for sale to match your industrial design requirements.


Inquiry Now

contact us

Your satisfaction is our top priority. Whether you have questions, need support, or want to share feedback, our dedicated team is ready to assist you every step of the way.

+86-15264257623

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info@laurelrefractory.com

+86-532-80829560