Medium-grade magnesite aluminosilicate cotton and other furnace refractory, these materials have high temperature resistance, but it is not easy to be modified after oxidation friction loss at high temperature, so it needs to stop the furnace acid and alkali for a long time, and personnel loss during construction is large. Now there is a kiln lining protection coating, high temperature resistance, oxidation resistance atmosphere, coating on the surface of all kinds of refractory materials, very good protection of molding refractory materials, prevent the oxidation of refractory powder, friction corrosion and other normal loss.
The addition of metals to refractories plays a positive role in mechanical properties and oxidation resistance of refractories, which indicates that they have a broad application prospect in refractories. With the continuous development of science and technology and the continuous breakthroughs in the field of science, the performance of metal composite refractory materials will be continuously optimized and its application scope will be further expanded. Made of steel plate or hard wood, steel plate coating agent (oil), wood coating waterproof paint, should do not leak, and a good strength.
High melting point, compact structure, alkaline refractory materials, widely used in the metallurgical industry, glass industry, cement industry, home appliance heaters and temperature chemical industry, this is not only because of the melting point of magnesium oxide is 1800%, higher oxide, its resistance to alkaline oxide basic slag and high performance chemical erosion. Fused magnesite refractory raw material is a unique advantage. Electric fused magnesia is widely used in domestic and foreign markets.
Features of various furnaces magnesium oxide, and furnace production of fused magnesia fur and above 600 ℃ calcination method of various grades of magnesia as raw material, or any of the above mixture as raw materials, raw materials or the above raw materials according to the grade is divided into concentrate and thick charge by way of concentric rings or raw materials (or its mixed materials) for concentrate, the magnesite stone for roughage, above the proportion of a species to load in a concentric way used in the existing fused magnesia, or furnace smelting is separated, the board may be more than 96.5% purity than fused magnesia.
Middle-grade magnesia is mainly used to produce high-grade basic shaped or unshaped refractory, and its finished products are mainly used in metallurgy, building materials, nonferrous metals, chemical industry and other industries. In addition, middle-grade magnesia is used in metallurgy to produce metallurgical powder for bonding furnace bottom and wall, manufacturing slurry spraying lining, manufacturing magnesia brick and magnesia chrome brick. In addition to being used as the lining of furnace bottom, it is also widely used in electric steelmaking furnace, heating furnace, non-ferrous metal blowing furnace and rotary furnace.