ts products can be divided into two categories: metallurgical magnesia magnesia products. According to chemical composition use, it can be divided into metallurgical magnesia, magnesia brick, magnesia silica brick, magnesia alumina brick, magnesia calcium brick, magnesia carbon brick other varieties. The performance of magnesia-calcium synthetic sand is greatly affected by the ratio of CaO/SiO2 impurities. The load softening point thermal shock resistance of high-purity magnesia bricks are far better than ordinary magnesia bricks. High refractoriness, good resistance to alkaline slag iron slag, it is an important advanced refractory material. Magnesium products are mostly produced by sintering method. The sintering temperature is generally between 1500 1800°C. In addition, chemical bonding agents can also be added to make unburned bricks unshaped refractories. Mainly used in open hearth, electric furnace, oxidation converter, non-ferrous metal smelting furnace, cement kiln calcining kiln for alkaline refractory materials.
Because the main producing area of magnesite is the southern part of Liaoning, namely, Haicheng City, Dashiqiao City, Xiuyan County, Fengcheng City other places in Liaoning. Magnesia-calcium synthetic sand is the raw material for magnesia refractory materials in this region, including fused magnesia sintered magnesia. It is the most abundant region in the world, there are many local companies producing magnesia refractories.