Bubble Alumina Bricks Description
Alumina Bubble Bricks are specifically designed for applications that require high-temperature resistance, up to 1800°C/3270°F. These bricks possess outstanding insulation properties and exhibit high hot strength. They are constructed using tiny hollow insulating spheres made from high-purity alumina, commonly known as bubble alumina. Alumina, as a material, inherently has low thermal conductivity, and the presence of hollow spheres further reduces its thermal conductivity. These combined properties make Bubble Alumina bricks an excellent choice for insulation in environments with exceptionally high temperatures.
Bubble Alumina Bricks Specifications
Chemical Composition:
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Chemical Composition (wt%)
|
|
Al2O3
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SiO2
|
MgO
|
Na2O
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Fe2O3
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CaO
|
|
98.8
|
0.8
|
0.05
|
0.1
|
0.03
|
0.3
|
Properties:
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Properties
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SPEC
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TYPICAL
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Classification temperature (°C)
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1800°C/3270°F
|
|
Bulk Density (g/cm3)
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1.65 Max
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1.55
|
|
Cold Crushing Strength (kg/cm2)
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100 Min
|
150
|
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Thermal Conductivity (W/mK) at 350°C
|
-
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0.9
|
|
Reheat shrinkage (1,700°C*8 hours, %)
|
-
|
0.06
|
Bubble Alumina Bricks Applications
The insulating firebrick that contains high-alumina bubbles are often used as the working lining in ceramic kilns, backup linings in gasifiers for coal and petroleum coke, gas/oil (with heavy residue feed stock), and industrial waste. These IFBs are also used in hazardous waste and fluorine processing incinerators, hydrogen generators, auto thermal reactors for methanol production, and ammonia reformers.
High-purity alumina hollow insulating spheres are designed to withstand high temperatures and demanding environments. These bubbles themselves are an important component in refractories used for many different applications, including insulation of kiln brick and ceramic tile linings in gas turbines, backup linings in reactors, and working linings in manufacturing high-purity quartz for the electronics industry.
Bubble Alumina Bricks Packaging
Our Bubble Alumina Bricks are carefully handled during storage and transportation to preserve the quality of our product in its original condition.
