Combined production process of magnesia chrome brick

The loosening effect caused by the expansion when iron gunning material oxide reacts to generate spinel can also be made of magnesia-chrome bricks using synthetic co-sintered materials. In addition, there are unburned magnesia chrome bricks, for example, unburned magnesia chrome bricks combined with inorganic magnesium salt solutions. The production process of unfired magnesia chrome brick is simple, low cost, and good thermal stability, but the high temperature strength is far less than that of fired bricks. The price of magnesia chrome bricks In the late 1950s, a so-called "direct combination" magnesia chrome brick was developed.

Combined with magnesia chrome brick

The characteristics of this kind of brick are that the raw materials are pure, the firing temperature is high, the high temperature phases such as periclase and spinel are directly combined, and the low melting phases such as silicate are distributed in islands. Therefore, the high temperature of the brick is significantly increased. Strength and slag resistance. The production process of fired magnesia chrome bricks is roughly similar to that of magnesia bricks. In order to eliminate the fine powder produced by MgO, Cr2O3, Al2O3 or calcination of chromium ore-magnesia co-milled compacts during the sintering process of bricks, the method of making bricks with coarse magnesia particles is an effective measure to eliminate the loose effect . Compared with ordinary magnesia-chrome bricks, the magnesia-chrome bricks made by this method have lower porosity, higher compressive strength, load softening temperature and flexural strength. The magnesia-chrome bricks made of chrome ore-magnesite powder compacts and high-temperature-calcined synthetic magnesia-chrome sand have better slag resistance and high-temperature strength than other magnesia-chrome bricks.