Russia customer order 25tons magnesia alumina spinel bricks.
Magnesia spinel bricks and magnesia chrome bricks are refractory materials that are often used in rotary kilns and other high-temperature equipment in the steel industry. However, for RH furnaces (liquid steel vacuum treatment equipment), the choice of brick needs to be considered based on its specific needs.
1. Magnesia Spinel Bricks:
– These bricks contain magnesium oxide (MgO) and alumina (Al2O3). They offer good resistance to basic slag and thermal shock.
– Magnesia spinel bricks are preferred in applications where there is a requirement for resistance to basic slags and thermal cycling. They are known for their excellent corrosion resistance against basic slag.
– However, they might not be as suitable for applications where there’s exposure to high temperatures and oxidizing conditions for an extended period.
2. Magnesia Chrome Bricks:
– These bricks are made primarily of magnesium oxide (MgO) and chromium oxide (Cr2O3). They possess high refractoriness and good resistance to corrosion by acidic slags and gases.
– Magnesia chrome bricks are preferred in environments where there’s exposure to higher temperatures and oxidizing conditions. They offer excellent resistance to the corrosion caused by acidic slags and gases.
When considering an RH furnace, which typically operates at high temperatures and is subject to various slag compositions, both types of bricks may find applications in different zones within the furnace.
– Magnesia spinel bricks could be suitable for areas where resistance to basic slag and thermal cycling is crucial.
– Magnesia chrome bricks might be suitable for zones where there’s exposure to high temperatures and oxidizing conditions, providing excellent resistance to acidic slags and gases.
In summary, the choice of magnesia spinel bricks or magnesia chrome bricks depends on the specific conditions of the RH furnace. If the processing temperature is higher and better mechanical properties are required, then magnesia chrome bricks may be more suitable; if resistance to erosion by alkaline slag or molten steel and better wear resistance are required, then magnesia spinel bricks may be more suitable. In practical applications, other factors need to be considered, such as cost, availability, etc.