Light burned magnesia is a folding, pressure resistant, high strength, gas hard, cementitious material, widely used in national defense, medicine, chemical, paper, shipbuilding and other industries. In the building materials industry can be made tire board, particleboard, heat preservation column, railing, artificial marble, asbestos tile, ordinary tile, wallboard, laid ground. With the progress of science and technology, light burned magnesium oxide has been widely used in civil products, heavy and heavy machinery packing boxes, bottom beam packaging, high temperature refractory materials, but also can produce beautiful and generous bright strong furniture, in the mechanical industry can be made as a casting model. Magnesia is one of the important raw materials of refractories. It is used for manufacturing various magnesia bricks, magnesia alumina bricks, ramming materials, charging materials, etc. There are three kinds of sintered magnesia, lightly burned magnesia and electrofused magnesia. Calcination or electrosmelting of natural magnesite, from sea water, salt lake brine, and from dolomite, serpentine and magnesite. With the progress of science and technology, light burned magnesium oxide has been widely used in civil products, heavy and heavy machinery packing boxes, bottom beam packaging, high temperature refractory materials, but also can produce beautiful and generous bright strong furniture, in the mechanical industry can be made as a casting model. High purity magnesite is produced by flotation purification of natural special grade magnesite through light burning, fine grinding, ball pressing and calcination in vertical kiln of ultra-high temperature oil. It is a high quality raw material for brick and indeterminable refractories, with good sintering degree and dense crystallization. It is also a high quality raw material for middle-grade magnesia refractory products, and can also be used for manufacturing various magnesia bricks, magnesia aluminum bricks, ramming materials, charging materials and so on. Containing more impurities, used for paving the bottom of the steel furnace.
Sintered magnesite is mainly made of magnesite, magnesite or magnesium hydroxide extracted from sea water after calcination at high temperature. Strong hydration resistance. CO2 is released when the magnesite is calcined at 700-950 ℃. The resulting magnesite is a soft porous loose substance and cannot be used as refractory. The magnesite calcined at 1550-1600℃ is called sintered magnesite.