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The main components of brown alumina


Unlike sandblasted brown corundum, which requires second-class alumina content, the above-mentioned high-quality brown corundum is the key to the quality of the finished refractory material. With the implementation of new technologies such as blast furnace, converter, ladle, and continuous casting in the metallurgical industry, The adjustment of the structure of refractory materials has been promoted, so that the proportion of brown corundum used in refractories has become larger and larger, and the amount has now reached more than 60%. The raw material of brown corundum has played a very important role in adjusting the structure of refractory materials.
The first-grade brown corundum abrasive is the main component of heat-resistant refractory castable. Insulation refractory castables are divided into light aggregate refractory castables, foam refractory castables and aerated refractory castables. Insulation refractory castable aggregate: coarse aggregate, particle size 10 ~ 3mm, loose bulk density less than 1.0g / cm3: fine aggregate, particle size less than 3mm, loose bulk density less than 1.2g / cm3. This kind of aggregate uses brown fused alumina, which is very suitable. Compared with white fused alumina, it is cost-effective and can be used except for refractory casting with high requirements and special standards. Of course, it needs to be selected in actual construction.
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