Differences between dead-burned magnesia and light-burned magnesia

Sintered magnesia is mainly produced by high-temperature calcination of magnesite, brucite, or magnesium hydroxide extracted from seawater. It has strong hydration resistance. When magnesite is calcined at 700-950 ℃, CO2 is released, and the resulting magnesia is a soft, porous, loose substance that cannot be used for refractory materials;Electrical-grade magnesium oxide, magnesia calcined at 1550-1600℃, the so-called dead-burned magnesia, is called sintered magnesia. Using high-temperature equipment such as shaft kilns and rotary kilns, through one-step calcination or two-step calcination processes, dead-burned magnesia produced from natural magnesite as raw material is called sintered magnesia; sintered magnesia is divided into 18 grades according to its physical and chemical indicators,

Dead-burned magnesia is produced when magnesite is calcined at 1800℃, carbon dioxide is completely released, and magnesium oxide forms a dense block of periclase, called dead-burned magnesia (also known as sintered magnesia). This dead-burned magnesia has very high refractoriness. Its main component is magnesium oxide, made from selected natural premium magnesite ore through flotation purification, light burning, fine grinding, high-pressure ball pressing, and ultra-high-temperature oil shaft kiln calcination.

Light-burned magnesia powderis a flexural, compression-resistant, high-strength, air-hardening, cementitious material, widely used in national defense, medicine, chemical industry, papermaking, shipbuilding and other industries. In the building materials industry, it can be used to make formwork panels, shaving boards, insulation columns, railings, artificial marble, asbestos tiles, ordinary tiles, wall panels, and floor paving. With the advancement of science and technology, light-burned magnesia powder has broader applications, such as civil engineering products, packaging boxes for heavy and light machinery, packaging bottom beams, high-temperature refractory materials, and can also be used to make beautiful and highly glossy furniture, as well as casting molds in the machinery industry.