High alumina brick is a common refractory brick. It is the user's favorite and selection in building industrial.Flowing is the methods of how to distinguish it:
When purchase, First is the color, high grade alumina brick with smooth surface, light yellow even white, four equal, no broken angle, no cracks.
The second,the weight of a single brick. According to the weight of ǀ standard high-alumina brick single 4.5 kg, ǁ high-alumina brick for the 4.2 kg, ǀǁ high-alumina brick for the 3.9 kg. The same level, the same type of high-alumina brick, if the weight of a single brick to achieve this standard, but for high-quality high-alumina brick, and vice versa to achieve such a weight, then that good quality.
If there is cracks, large split angle, four sides are not equal, it is for substandard products.
High alumina brick is Al2O3 content greater than 48% of aluminum silicate refractory products. With high bauxite, silicon wire stone minerals and corundum, synthetic mullite as the main raw material, adding appropriate amount of clay and other bonding agent, mixing dry pressure forming, drying after high temperature firing.
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