What are the refractory raw material dead-burned magnesia products?

Dead-burned magnesia has refractory properties and is very advantageous for making refractory products. It is mainly used in steel industry, glass, cement, non-ferrous metallurgy industry, etc., and is also an ideal material for making refractory bricks with unshaped refractories.

From the perspective of historical development, sintered magnesia is also known as metallurgical sand, dead-burned magnesia, mid-grade magnesia, and high-purity magnesia. In my country, magnesite is used as raw material, and it is processed into light-burned magnesia powder (CCM) through reverberatory furnace light burning, which is large in quantity and widely used. Light-burned magnesia powder is a very important basic raw material of magnesia. According to its different chemical composition, particle size and properties, it is used in: calcined sintered magnesia (DBM) of various grades by pressing balls, which is different from Al2O3, CaO, etc. The composite materials such as magnesia-aluminum spinel sand, magnesia-calcium sand, etc. are synthesized from raw materials with high content, and fused magnesia sand (FM, refractory grade or electrical grade), converter slag splashing protection magnesia ball, etc. are produced. 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.

The traditional light-burned magnesia is roasted from raw ore in a reverberatory furnace. The use of reverberatory furnaces to produce light-burning magnesia 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, easy operation; suitable for southern Liaoning area Magnesite features. In the past ten years, the kiln-type production process has also been greatly improved, mainly in: switching to clean fuel, changing the original direct burning of bituminous coal to the gas produced by a simple gas generator for roasting, to avoid fuel ash. Light-burning magnesia pollution basically solves the environmental pollution caused by black smoke emissions and improves thermal efficiency; the kiln type is modified to increase the volume of the kiln, increase the output, and reduce the unit consumption of fuel.