Reburned magnesite It is very beneficial to produce refractory products with refractory properties. It is mainly used in steel industry, glass, cement, nonferrous metallurgy industry, etc. It is also a high-quality ideal material for manufacturing unshaped refractory bricks. Reburned magnesite
From the perspective of historical development, sintered magnesia is also called metallurgical magnesia, calcined magnesia, medium grade magnesia and high-purity magnesia. In China, magnesite is used as raw material to produce light burned magnesia powder (CCM) through light firing in reverberatory furnace, which is large in quantity and widely used. Light burned magnesia powder is a very important basic magnesia raw material. According to its different chemical composition, particle size and performance, it is used to press the ball to calcine various grades of sintered magnesia (DBM), and to synthesize magnesium aluminum spinel sand, magnesium calcium sand and other composite materials with different contents of Al2O3, CaO and other raw materials to produce Fused magnesia (FM, fire resistance grade or electrical grade), converter slag splashing and furnace protection magnesium ball, etc. The above products are mainly used as raw materials for refractory products. In addition, these products are also raw materials for magnesium chemical products such as light MgO, light MgCO3, magnesium fertilizer, magnesium building materials, feed additives, etc.
Traditional light burned magnesia is produced by roasting raw ore in reverberatory furnace. The use of reverberatory furnace to produce light burned magnesium oxide has not been eliminated after 70 to 80 years of survival and development, because the furnace has its outstanding characteristics: simple and practical process; Less investment, quick start and easy operation; It is suitable for the characteristics of magnesite in southern Liaoning. In the past ten years, the production process of the kiln has also been greatly improved, mainly in the following aspects: changing the use of clean fuel, changing the direct burning of bituminous coal to the use of gas produced by a simple gas producer as fuel for roasting, avoiding the pollution of fuel ash on light burned magnesium oxide, basically solving the environmental pollution of black smoke emissions, and improving the thermal efficiency; The kiln type was modified to increase the volume of the kiln, increase the output and reduce the unit fuel consumption.
