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Alumina Bubble Insulation Brick

Alumina Bubble Insulation Brick

【Main Products】

Vibration pouring large bricks, low-porosity clay bricks, clay bricks, etc. are widely used in domestic photovoltaic, float, light industry, electronics industries, and exported to Vietnam, Indonesia, North Korea, Germany, Russia and other countries.

【Our Persistence】

Over the years, the company has been committed to continuously developing new products and improving product quality to meet the requirements of users on the variety and quality of refractory materials in technological progress.

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Alumina Bubble Insulation Brick

Description

A new type high-temperature heating insulation materials and made of industrial alumina in the electrical furnace through smelting and blowing. Alumina Bubble Bricks' crystal form is a-Al2O3 microcrystal and main body is alumina bubble that can be made to be all kinds of products with various shapes for serving the highest temperature of 1800ºC with high mechanical strength and low bulk density. Widely applicated for glass, ceramic, electricians, chemical industrial etc. 

Typical Indexes

ItemAKZ-85

AKZ-90

AKZ-99

Chemical composition %Al2O3≥85≥90≥99
SiO2≤13≤8≤0.2
Fe2O3≤0.5≤0.5≤0.5
Apparent Porosity%58-6258-6258-62
Bulk Density g/cm31.4-1.71.4-1.71.4-1.7
Cold Crushing Strength Mpa≥12≥10≥9
0.1Mpa Refractoriness Under Load T0.6 ℃≥1650≥1700≥1700
Permanent Linear Change On Reheating(%)1500℃X2h±0.3±0.3±0.3
20-1300℃ Thermal Expansion  % (x 10-6)0-7.80-8.00-8.6
Thermal Conductivity(Average 800℃)W/(M.K)≤0.8≤1.2≤1.4
Max Service Temperature ℃≤1680≤1700≤1800


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