Fused magnesite is made by melting high-quality magnesite as raw material, and its English name is fused magnesite. It is calcined at high temperature from magnesite, brucite or magnesium hydroxide extracted from seawater. Strong resistance to hydration. Light burnt magnesia powder
It is a general term for products produced by high-temperature treatment of magnesite materials such as magnesite to reach the sintering degree. Using high-temperature equipment such as shaft kilns, rotary kilns and other high-temperature equipment for one-step calcination or two-step calcination process, magnesia fired with natural magnesite as raw material is called sintered magnesia; magnesite and other raw materials are smelted in an electric arc furnace to achieve a molten state cooling The latter is called fused magnesia; the one made by extracting magnesia from seawater is called seawater magnesia. Magnesia is one of the most important raw materials for refractory materials, and is used to manufacture various magnesia bricks, magnesia alumina bricks, ramming materials, and repairing materials. Containing more impurities, it is used to pave the bottom of steelmaking furnaces, etc.
High-purity magnesia is made by flotation and purification of natural super magnesite ore, which is lightly burned, finely ground, pressed ball, and calcined in ultra-high temperature oil shaft kiln. It is a high-quality raw material for making bricks and indeterminate refractories.
The mid-grade magnesia is produced from light-burned magnesia with 97% MgO content as raw material, and is produced by processes such as ball pressing and high-temperature shaft kiln calcination. The product has good sintering degree and dense crystals. It is a high-quality raw material for the production of mid-range magnesia refractory products.
Fused magnesia is made by fusing selected special A-grade natural magnesite or high-purity light-burned magnesia particles in an electric arc furnace. The product has high purity, large crystal grains, dense structure, strong slag resistance, and good thermal shock stability. It is an excellent high-temperature electrical insulation material, and it is also used to make high-grade magnesia bricks, magnesia carbon bricks and unshaped refractory materials. Important raw materials.