China Manufacturer for Special Shaped Fire Brick - High Quality Alumina Bubble Refractory Brick – Rongsheng factory and manufacturers | Rongsheng

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All we do is usually connected with our tenet " Customer to start with, Rely on initial, devoting on the food packaging and environmental protection for Corundum Castable, High Temperature Insulation Bricks, Insulating Firebrick J23, Since establishment in the early 1990s, we have set up our sale network in USA, Germany, Asia, and several Middle Eastern countries. We aim to be a top class supplier for worldwide OEM and aftermarket!
China Manufacturer for Special Shaped Fire Brick - High Quality Alumina Bubble Refractory Brick – Rongsheng factory and manufacturers | Rongsheng Detail:

Alumina Bubble Brick Description

Alumina bubble fire brick is a new type high temperature heating insulation materials and made of industrial alumina in the electrical furnace through smelting and blowing. alumina bubble refractory brick crystal form is a-Al2O3 microcrystal and main body is alumina bubble which can be made to be all kinds of products with various shapes for serving the highest temperature of 1800℃ with high mechanical strength and low bulk density.

Properties of Alumina Bubble Brick

  • Light weight,
  • Saving energy,
  • Lower construction cost,
  • High temperature resistance,
  • Low reheating linear change,
  • Good thermal shock resistance.

Manufacturing Process of Alumina Bubble Brick

Aluminium bubblle firebrick adopt alumina bubble ball as the main raw materials, high performance ultrafine powder as the annexing agent and organic substance as the binding agent through molding and drying, and then are fired in the high temperature shuttle kiln.

Advantage of Alumina Bubble Brick

Aluminium bubblle fire brick has the features of heat insulation and low thermal conductivity, which can result the great heat insulating effect, reduce heat waste and improve thermal efficiency. using aluminium bubblle refractory brick can save energy high up to 30%. and alumina bubble block’ service temperature is high up to 1750 ℃. the thermal stability is good and the reheating linear change rate is low, aluminium bubble block can results the long service life.

Rongsheng Refractory Alumina Bubble Brick Specifications

Item Alumina Bubble Brick
Types Unit 85# 90# 99#
Maximum 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 ≥1760 ≥1760
Reheating Linear Change (1600℃*3h) % ±0.3 ±0.3 ±0.3
Thermal Expansion Coefficient(Room temperature -1300℃) ×10-6℃-1 ~7.8 ~8.0 ~8.6
Thermal Conductivity(Average temperature 800℃ ) W/(m·K) ≤0.8 ≤1.3 ≤1.5

Application of Alumina Bubble Brick

Alumina bubble brick is a kind of very important refractory material for resisting high temperature and special demands of positions for furnace and kiln, which is mostly used as insulating brick for insulation layer of furnace and kiln, and also aluminium bubble brick can be used for service linings in manufacturing high purity quartz for the electronics industry such as ceramic tile linings in gas turbines and backup linings in reactors.

Alumina Bubble Brick Manufacturer from RS Refractory Factory

RS refractory factory as a professional alumina bubble brick manufacturer in china, have many competitive advantages in the market. if you have demand of aluminium bubble bricks, or have some questions on aluminium bubble firebrick about physical and chemical indicators, please contact us for free, we will provide you with high quality aluminium bubble refractory brick.


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China Manufacturer for Special Shaped Fire Brick - High Quality Alumina Bubble Refractory Brick – Rongsheng factory and manufacturers | Rongsheng detail pictures

China Manufacturer for Special Shaped Fire Brick - High Quality Alumina Bubble Refractory Brick – Rongsheng factory and manufacturers | Rongsheng detail pictures

China Manufacturer for Special Shaped Fire Brick - High Quality Alumina Bubble Refractory Brick – Rongsheng factory and manufacturers | Rongsheng detail pictures


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Reliable quality and good credit standing are our principles, which will help us at a top-ranking position. Adhering to the tenet of "quality first, customer supreme" for China Manufacturer for Special Shaped Fire Brick - High Quality Alumina Bubble Refractory Brick – Rongsheng factory and manufacturers | Rongsheng , The product will supply to all over the world, such as: Nepal, Angola, Pakistan, We take measure at any expense to achieve essentially the most up-to-date equipment and approaches. The packing of nominated brand is our a further distinguishing feature. The products to assure years of trouble-free service has attracted a great deal customers. The solutions are obtainable in improved designs and richer assortment, they're created scientifically of purely raw supplies. It readily available in a variety of designs and specifications for your selection. The most recent kinds are a great deal better than the preceding one particular and they are quite popular with lots of prospects.
  • Wide range, good quality, reasonable prices and good service, advanced equipment, excellent talents and continuously strengthened technology forces,a nice business partner.
    5 Stars By John biddlestone from Lisbon - 2017.01.28 19:59
    We have been cooperated with this company for many years, the company always ensure timely delivery ,good quality and correct number, we are good partners.
    5 Stars By Sara from Iran - 2017.09.30 16:36
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