Alumina Bubble Bricks
Product Information
Alumina hollow ball bricks/Alumina bubble bricks are ultra-high temperature energy-saving and heat-insulating materials made of alumina hollow balls and alumina powder as the main raw materials, combined with other binders, and fired at 1750 degrees. Its main components include alumina hollow balls, corundum powder, calcined powder, etc., which are made by homogenization, molding, high-temperature sintering and other processes.
Features:
High use temperature: The use temperature of alumina hollow ball bricks can reach above 1750 degrees, showing excellent thermal stability.
Low thermal conductivity: Due to its internal hollow structure, the thermal conductivity is low, which can effectively reduce heat transfer and improve thermal efficiency.
Low volume density: Compared with traditional heavy bricks, the volume density of alumina hollow ball bricks is only 1.1~1.5g/cm³, which can significantly reduce the weight of the furnace and reduce the equipment load.
High mechanical strength: The mechanical strength of the product is high, which is several times that of ordinary lightweight products.
Good energy-saving effect: It can significantly save refractory materials and energy, with energy-saving effect reaching more than 30%.
Details Images
Standard Bricks
Shaped Bricks
Shaped Bricks
Shaped Bricks
Shaped Bricks
Shaped Bricks
Product Index
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INDEX
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RBTHB-85
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RBTHB-90
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RBTHB-98
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RBTHB-99
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Max Service Temperature(℃)
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1750
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1800
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1800
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1800
|
|
Bulk Density(g/cm3) ≥
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1.4~1.9
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1.4~1.9
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1.4~1.9
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1.5~2.0
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|
Cold Crushing Strength(MPa) ≥
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10
|
10
|
11
|
12
|
|
Permanent Linear Change@1600℃×3h (%)
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±0.3
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±0.3
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±0.3
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±0.3
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|
Thermal Conductivity(W/m.k)
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0.30
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0.35
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0.50
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0.50
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Al2O3(%) ≥
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85
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90
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98
|
99
|
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Fe2O3(%) ≤
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0.5
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0.2
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0.1
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0.1
|
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ZrO2(%) ≥
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―
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―
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―
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―
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Application
Metallurgical industry: Alumina hollow ball bricks can be used for thermal insulation of high-temperature equipment such as blast furnaces, hot blast furnaces, converters, etc.
Chemical industry: used for thermal insulation of furnaces, heat exchangers, steampipes, etc.
Building materials industry: used for thermal insulation of sintering kilns, rotary kilns, pulverized coal hot blast furnaces, etc.
Light industry, ceramics, glass, electronics and other industries: widely used in the lining of various high-temperature kilns, such as cracking furnaces, tunnel kilns, push plate kilns, crucible furnaces and various electric furnaces and electric kilns.
Petrochemical Industry
Carbon Black Industry
Metallurgical Industry
Chemical Industry
Production Process
Package&Warehouse
Company Profile
Shandong Robert New Material Co., Ltd. is located in Zibo City, Shandong Province, China, which is a refractory material production base. We are a modern enterprise that integrates the research and development, production, sales, kiln design and construction, technology, and export refractory materials. We have complete equipment, advanced technology, strong technical strength, excellent product quality, and good reputation. Our factory covers over 200 acres and an annual output of shaped refractory materials is approximately 30000 tons and unshaped refractory materials is 12000 tons.
Our main products of refractory materials include: alkaline refractory materials; aluminum silicon refractory materials; unshaped refractory materials; insulation thermal refractory materials; special refractory materials; functional refractory materials for continuous casting systems.
Frequently Asked Questions
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We are a real manufacturer, our factory is specialized in producing refractory materials for more than 30 years. We promise to provide the best price, the best pre-sale and after-sale service.
For each production process, RBT has a complete QC system for chemical composition and physical properties. And we will test the goods, and the quality certificate will be shipped with the goods. If you have special requirements, we will try our best to accommodate them.
Depending on the quantity, our delivery time is different. But we promise to ship as soon as possible with guaranteed quality.
Of course, we provide free samples.
Yes, of course, you are welcome to visit RBT company and our products.
There is no limit, we can provide the best suggestion and solution according to your situation.
We have been making refractory materials for more than 30 years, we have strong technical support and rich experience, we can help customers design different kilns and provide one-stop service.
