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Light burnt magnesium mainly produces cementitious materials, such as magnesia cement, insulation and sound insulation building materials, as well as ceramic raw materials. After chemical treatment of light burnt magnesium, it can be made into a variety of magnesium salts, which can be used as raw materials for medicine, rubber, man-made fibers, papermaking, etc. Reburnt magnesium. Most of the refractories used for metallurgy are used to make magnesia bricks, chrome magnesia bricks, magnesia, metallurgical powder and fused magnesia powder. Special alloy steel, lining of medium and high frequency induction furnace for nonferrous metals and precious metals, magnesium crucible. It can also be used as high temperature electrical insulation material. The source of light burning powder is calcined magnesite.
Light-burned magnesia powder is yellowish and light brown powder with particle size below - 100 mesh, small crystal size (< 3 um), true specific gravity 3.07-3.22, bulk density 0.8-1.2 g/cm3, refractive index 1.68-1.70, large lattice constant (a=0.4212) with many lattice defects, brittle texture, porous structure, high reaction activity, easy solid-state reaction or sintering, and hardening with hydrated Mg (OH) 2. Ability. Light-burned magnesia powder calcined from magnesite has a volume shrinkage of about 5%. Usually, there is 3%~5% CO2 left due to incomplete decomposition.