Refractory Bricks

What are the advantages of bubble alumina brick?

Jan 06,2022
Alumina hollow ball and its products are a kind of light refractory material with excellent high temperature resistance and energy saving, and it is very stable to use in various atmospheres. Especially it is used in high temperature kiln at 1800℃.

What is bubble alumina brick? 

Bubble alumina brick adopts alumina hollow ball as the main material, high performance superfine powder as additive, organic material as binder, after forming and drying, it is fired in 1750℃shuttle kiln. Belongs to a kind of energy-saving heat preservation material in high temperature material. For reducing the weight of the furnace body, reforming the structure, saving materials and energy, it will achieve obvious results.

bubble alumina brick

Advantages of Bubble alumina brick

1. High operating temperature of bubble alumina brick:
It can reach above 1750 degrees, with good thermal stability. The rate of change of the reburning line is small, and it can be used for a longer time.

2. Bubble alumina brick can optimize the structure and reduce the weight of the furnace body
The bulk density of heavy bricks currently used with high temperature resistant materials is 2.6-3.0g/cm, while alumina bubble alumina brick are only 1.1~1.5g/cm. For the same volume of one cubic meter, the use of Bubble alumina brick can reduce 1.1- 1.9 tons weight.

3. Using bubble alumina brick can save materials:
To reach the same operating temperature, the price of heavy bricks is equivalent to that of bubble alumina bricks, and considerable refractory materials for insulation are required. If alumina bubble alumina bricks are used, 1.1-1.9 tons of heavy bricks can be saved per cubic meter, and 80% of refractory insulation materials can be saved.

4. Energy-saving:
Bubble alumina brick have obvious thermal insulation properties and low thermal conductivity, which can achieve a good thermal insulation effect, reduce heat dissipation, improve thermal efficiency, and save energy. The energy saving effect can reach more than 30%. Bubble alumina bricks can be used for high-temperature energy-saving (> 30%) inverted flame kilns, shuttle kilns, molybdenum wire furnaces, tungsten rod furnaces, induction furnaces, nitriding furnaces, etc.

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