- Time:Jun 17, 2023
Magnesia alumina brick is a high-temperature refractory material, which is mainly made of alumina, magnesia and some other additives. The details of its raw materials are as follows:
1. Alumina: Alumina is a white powdery solid with the chemical formula Al2O3. It has high heat resistance and chemical stability, so it is widely used in the manufacture of high temperature refractory materials.
2. Magnesium oxide: Magnesium oxide is a white powder with the chemical formula MgO. It also has high heat resistance and chemical stability, and can form a solid solution with alumina to improve the performance indicators of magnesia-alumina bricks.
3. Carbon: Carbon is a black solid. Due to its good electrical conductivity, thermal conductivity and corrosion resistance, it is often used as an additive in refractory materials to improve the thermal conductivity and wear resistance of the material.
4. Bentonite: Bentonite is a natural mineral that can expand into a porous soil-like substance under the action of water. Often used as an additive in refractory materials, it has good water absorption and cohesiveness, and can improve the plasticity and crack resistance of materials.
In addition to the above-mentioned raw materials, magnesia-alumina bricks may also add other additives, such as calcium oxide, zirconia, etc., to adjust their physical and chemical properties, improve their refractory performance and service life.
In short, the raw materials of magnesia-alumina bricks mainly include alumina, magnesia and other auxiliary additives. Among them, alumina and magnesia are the main components of magnesia-alumina bricks, and the types and proportions of other additives.
