Fused magnesia It is made by melting high-quality magnesia as raw material. Its English name is fused magnetite. It is made by calcining magnesite, bischofite or magnesium hydroxide extracted from seawater at high temperature. Strong hydration resistance.

It is a general term for the products of magnesite and other magnesia raw materials that have been treated at high temperature to reach the degree of sintering. Magnesite fired from natural magnesite by one-step or two-step calcination process with high-temperature equipment such as shaft kiln and rotary kiln is called sintered magnesite; The fused magnesite is formed by melting magnesite in electric arc furnace and cooling it; The magnesium oxide extracted from seawater is called seawater magnesia. Magnesite is one of the most important raw materials for refractories, which is used to manufacture various magnesia bricks, magnesia alumina bricks, ramming materials, furnace repairing materials, etc. Those with more impurities are used to pave the bottom of the steelmaking furnace.