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Fused magnesia is also called sintered magnesia. It is calcined at high temperature from magnesite, brucite or magnesium hydroxide extracted from seawater. Strong hydration resistance. 97 fused magnesia
It is a general term for the products of magnesite and other magnesia materials that have been treated at high temperature to achieve sintering. Using high-temperature equipment such as shaft kiln and rotary kiln, one-step calcining or two-step calcining process, the magnesia fired from natural magnesite is called sintered magnesia. The one formed later is called fused magnesia; the one made by extracting magnesia from seawater is called seawater magnesia. Magnesia is one of the most important raw materials for refractory materials, and is used to manufacture various magnesia bricks, magnesia alumina bricks, ramming materials, and charging materials. Those containing more impurities are used for laying steelmaking furnace bottoms, etc.
High-purity magnesia is produced by flotation and purification of natural super magnesite ore, light burning, fine grinding, ball pressing, and calcining in ultra-high temperature oil shaft kiln. It is a high-quality raw material for brick making and indefinite refractories. The mid-grade magnesia is produced from light-burned magnesia with a MgO content of 97%, and is produced by briquetting and high-temperature shaft kiln calcination. The product has good sintering degree and dense crystal, and is a high-quality raw material for the production of mid-grade magnesia refractory products.
Fused magnesia is produced by melting selected special A-grade natural magnesite or high-purity light-burned magnesia particles in an electric arc furnace. The product has high purity, large crystal grains, dense structure, strong slag resistance, and good thermal shock stability. It is an excellent high-temperature electrical insulating material, and is also used for making high-grade magnesia bricks, magnesia-carbon bricks and unshaped refractories. important raw material.
