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- Classification of mullite insulation bric
- the development of the refractory brick i
- Manufacturing process of fire clay insula
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Summary of the physical and chemical properties of mullite insulation brick
Date:2020-03-26 15:39 | From:Zhengzhou Sunrise Refractory | Author:admin
High alumina refractory with mullite (3Al2O3 · 2SiO2) as the main crystal phase. Generally the alumina content is between 65% and 75%. In addition to mullite, those with lower alumina also contain a small amount of glass phase and cristobalite; those with higher alumina also contain a small amount of corundum.
2. The mullite insulation brick has low heat melting. Due to the low thermal conductivity, the mullite series of light thermal insulation bricks accumulate very little heat energy, and the energy saving effect is obvious in intermittent operation;
3, low impurity content has very low iron box alkali metal and other oxide content, therefore, high fire resistance; higher aluminum content makes it maintain good performance in a reducing atmosphere;
4.Mullite insulation brick has high thermal compressive strength;
5, accurate appearance dimensions, speed up the masonry, reduce the use of refractory mud, ensure the strength and stability of the masonry, thereby extending the life of the lining;
6. Mullite insulation brick can be processed into special shapes. To reduce the number of bricks and joints.