Brief Analysis of Hot-selling Magnesia-Aluminum Brick

Refractory products with periclase as the main mineral component. According to the composition of the raw materials, it can be divided into: magnesia bricks made of magnesia bricks made of magnesia, magnesia bricks with a small amount of special bauxite or industrial alumina, and magnesia-carbon bricks with a certain amount of graphite powder. Poor magnesia-silica bricks made of high-silica magnesia. Compared with other refractory bricks, magnesia bricks have a higher fire resistance, which can reach above 2000 ° C, have a higher load softening temperature, greater high temperature mechanical strength, and have good resistance to iron oxide and calcium oxide Chemical attack performance of alkaline slag. But generally the thermal stability is poor.


 
The magnesium oxide content in the product is about 85%. Alkaline refractory with alumina content of 5% to 10%, with periclase as the main crystalline phase and magnesia-alumina spinel as the subcrystalline phase (as the main binding phase).
 
The apparent porosity is generally 15-18%. The thermal expansion coefficient is 10.6 × 10-6 / ° C. The thermal shock resistance is better than that of magnesium bricks which are similar to magnesium aluminum bricks. Because the matrix has high melting point magnesia-alumina spinel, its high temperature strength is high, and the load softening start temperature is above 1580 ° C. Slag resistance is also good. Generally, high-quality sintered magnesia is used as a granular material, and a fine powder composed of magnesia mixed with raw alumina or light-fired alumina clinker or industrial alumina is added and mixed, shaped and fired.
 
 
If you are interested in our fused azs bricks, or need other types of refractory materials, please contact our Tianyang Refractory Group, we will definitely provide you with the best quality refractory materials and the most reasonable quotation.