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Bubble Alumina and Bubble Zirconia Bricks |
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Application: Primarial used for lining of high temperature furnace and thermic insulant of ultra-high temprature furnace of the industrial as refractory material, industrial ceramics, electronice ceramics, petrochemical and metallurgical industries.
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Chemistry Component and Physical Property
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Item
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Bubble Al2O3
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Bubble Zirconia
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85
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90
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99
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88
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Max Service Temperature
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1680
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1700
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1800
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2200
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Al2O3 %
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≥85
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≥90
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≥99
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≥85
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ZrO2%
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--
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--
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--
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≥98 Stabilizing
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SiO2%
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≤15
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≤8
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≤0.2
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≤0.2
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Fe2O3%
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≤0.2
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≤0.2
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≤0.2
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≤0.2
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Bulk Density
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1.4-1.7
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1.4-1.7
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1.4-1.7
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≤3.0
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Cold Compressing Strengh
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≥12
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≥10
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≥99
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≥8
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Refractoriness Under Load
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≥1650
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≥1700
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≥1700
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≥1700
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Reheating Linear Change
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±0.3
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±0.3
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±0.3
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±0.2
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(1600℃*3Hs)
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Thermal Expansion Coefficient
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～7.8
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～8.0
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～8.6
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～9.1
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Thermal Conductivity W/(m.k.)
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≤0.8
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≤1.3
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≤1.5
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≤1.3
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Refractory Products 
