Re-burned magnesia is one of the important raw materials for refractories!

Re-burned magnesia is one of the important raw materials of refractory materials, which is used to manufacture various magnesia bricks, magnesia alumina bricks, ramming materials, and repairing materials. The price of fused magnesia contains more impurities and is used to pave the bottom of steelmaking furnaces. Light burnt magnesia powder

The main component of magnesia is magnesium oxide, and impurities are CaO, SiO2, Fe2O3, etc. Magnesium oxide is an alkaline oxide with a melting point of 2800 degrees. After high temperature heating, it transforms into stable cubic crystals, commonly known as periclase. It is calcined at high temperature from magnesium hydroxide and has strong hydration resistance.

The burnt magnesia fired with natural magnesite as raw material is called sintered magnesia; sintered magnesia is divided into 18 grades according to its physical and chemical indexes, see the national standard GB/T 2273-1998 for details. The molten magnesia formed by smelting magnesite as raw materials in an electric arc furnace to a molten state is called fused magnesia; the magnesia produced by extracting magnesia from seawater is called seawater magnesia. High-purity magnesia is made from natural magnesite ore by flotation purification, light burning, fine grinding, ball pressing, and warm oil shaft kiln calcination. It is a raw material for making bricks and indeterminate refractory materials. 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 the raw material for the production of mid-range magnesia refractory products. It can also be used to make 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.