Production of fused magnesia

Fused magnesia is a highly specialized refractory material that is produced through a process of intense thermal treatment of magnesite, a naturally occurring mineral composed primarily of magnesium carbonate. The manufacturing of fused magnesia begins with the calcination of magnesite, where the material is heated to temperatures around 1,000°C, driving off the carbon dioxide and leaving behind a porous form of magnesium oxide. This calcined magnesia is then further processed in an electric arc furnace or a submerged arc furnace, where the material is subjected to extremely high temperatures, typically ranging from 2,000°C to 2,400°C. The intense heat causes the magnesia particles to melt and fuse together, resulting in the formation of a dense, crystalline structure with superior mechanical properties, thermal resistance, and chemical stability. The fused magnesia is then cooled, crushed, and graded to meet the specific requirements of various refractory applications, such as the lining of furnaces, kilns, and other high-temperature industrial equipment. Fused magnesia is a critical component in the manufacturing of high-performance refractory materials that are essential for the efficient and reliable operation of a wide range of industries, including steel, cement, glass, and petrochemical, among others.

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