Corundum wear-resistant and refractory castable

　　Zibo Yuntai Technology Furnace Factory is a professional manufacturer of castables, low-cement castables, lightweight castables, and corundum refractory castables. It has rich production practical experience, strong technical force, advanced production technology, and can produce various types of castables. Shaped refractory materials. Under the guidance of relevant scientific research departments, according to the technical requirements of different users, scientific matching is carried out, and the quality is continuously improved.
　　The main products are: low-cement castables, refractory fiber castables, low-cement mullite and corundum castables, light-weight insulation series castables, special castables for circulating fluidized bed boilers, green silicon carbide abrasives, etc. The products are spread all over the world.
　　Corundum castable performance characteristics: good thermal shock stability, peeling resistance, abrasion resistance, corrosion resistance to acid media.
　　Scope of application of corundum castable: suitable for high abrasion resistance, erosion resistance and tortoise shell ramming layer in catalytic cracking equipment, cyclone separators, inclined pipe devices in oil refineries, processing equipment such as synthetic ammonia primary and secondary conversion furnace lining pouring Uses of corundum castable: Mainly used in circulating fluidized bed boiler combustion chamber, separator, flue and other parts that are easy to scour and wear.
　　The scope of application of corundum castable The corundum castable is an unshaped refractory made from You Zhengyi's fused corundum as the main raw material, adding binders and other materials. Different corundum castables are selected according to the location and temperature of use, with chromium Corundum castable, zirconium corundum castable, brown corundum castable, composite corundum castable, etc. Chromium corundum castables are mainly used for the lining of carbon black reactors and coal-water slurry gasification furnaces, and the operating temperature is generally above 1700 degrees. Zirconium corundum castable is mainly used in kilns in the glass industry. It has strong resistance to glass erosion. Brown corundum castable has good wear resistance. It is generally used for coal injection pipes in power plants, boiler linings, and steel rolling heating furnace slide rails. The composite corundum castable is a composite corundum castable made by adding specific materials according to the use temperature and environment. It is generally used in cement rotary kilns, non-ferrous metal melting furnaces, and iron and steel industries.
　　Corundum refractory castable Wear-resistant refractory castablecastable is a kind of unshaped refractory which is widely produced and used at present.
　　castables are mainly used in kilns in the metallurgical industry, and are also widely used in kilns and thermal equipment in the petroleum, chemical, building materials, power and mechanical industries.
　　is mainly used to construct various heating furnace linings and other integral structures. Certain varieties can also be used in smelting furnaces.
　　such as aluminate cement refractory castables can be widely used in various heating furnaces and other thermal equipment without slag, acid and alkali corrosion.
　　In the parts that are corroded by molten iron, molten steel and molten slag and have high working temperature, such as tapping troughs, ladles, blast furnace bodies, tapping channels, etc., a combination of low-calcium and pure high-alumina cement can be used. A refractory castable made of granular and powdery materials with high alumina content and good sintering.
　　For example, phosphate refractory castables can be widely used in heating furnaces and soaking furnaces for heating metals, and can also be used in coke ovens and cement kilns where they are directly in contact with materials. In some parts of metallurgical furnaces and other vessels that are in direct contact with slag and molten metal, repairing with phosphate refractory castables also has a good effect. In some parts where the working temperature is not very high and higher abrasion resistance is required, it is more appropriate to use phosphate refractory castables.
　　If corundum-based refractory materials are used to make refractory castables, they generally have better results when used in a reducing atmosphere.
　　When used as the inner lining and furnace body of thermal equipment, it should generally be baked before the first use in order to gradually eliminate the physical water and crystal water in it, and achieve a certain degree of sintering, so that its volume and certain The performance reaches the stable state during use.
　　The baking system has a great influence on the service life. The basic principle of the baking system should be that the heating rate corresponds to the possible dehydration and other phase changes and deformations. During certain temperature stages where the above changes occur sharply, the temperature should be slowly increased or even kept for a considerable period of time.
　　If the baking is improperly or the temperature is raised quickly and put into use without baking, it is easy to cause serious cracks, or even loose and collapse, and may even explode in the special thick parts.
　　In addition, refractory castables generally have high room temperature strength, and can be made into preforms for installation at the kiln spinning site, such as the installation of refractory castable weir plate preforms for continuous casting tundish.