Refractory castable is a kind of refractory material composed of refractory aggregates, powders, binders and other materials, which are made by mixing and stirring, molding, hardening and other processes. It has excellent high-temperature performance, erosion resistance, thermal shock stability and wear resistance, and is widely used in kilns and thermal equipment in steel, non-ferrous metals, glass, ceramics, chemical and other industries.
The main properties of refractory castables include high temperature performance, physical properties and construction performance. High-temperature performance refers to the fact that the material can still maintain a certain strength and stability at high temperatures, and does not soften, melt, shrink or burst. The physical properties mainly include density, porosity, bulk density, etc., which directly affect the thermal conductivity, wear resistance and erosion resistance of materials. The construction performance refers to the operability of the material during the construction process, including the fluidity and workability during pouring, hardening speed, shrinkage, etc.
Refractory castables are very versatile and can be applied to the lining, throat, top, bottom and other parts of various industrial kilns, as well as the lining and protective layer of thermal equipment. The main purpose of its application is to protect the steel structure of the furnace body from high temperature and chemical erosion, prolong the service life of the equipment, and improve the thermal efficiency and productivity of the furnace.
In the iron and steel industry, refractory castables are widely used in high-temperature smelting equipment such as blast furnaces, open-hearth furnaces, converters, electric arc furnaces, etc., mainly playing the role of heat insulation, heat preservation and wear resistance, effectively reducing energy consumption and improving the quality and output of steel products.
In the non-ferrous metal industry, refractory castables are mainly used in the smelting, heat preservation and pouring process of non-ferrous metals such as copper, aluminum, zinc, etc., which can withstand the erosion of high temperature and molten metal, protect the furnace structure, and improve the purity and casting quality of metal materials.
In the glass industry, refractory castables are mainly used in the lining of the furnace and the clarification and homogenization parts of the molten glass, which can withstand high temperature and the erosion of molten glass to ensure the uniformity and quality of molten glass.
In addition, refractory castables play an important role in the various kilns and reactors used in the chemical industry. It can withstand high temperatures and chemical erosion, ensure the stable operation of equipment, and improve production efficiency and product quality.
In short, as an important refractory material, refractory castable has been widely used in industrial production and construction. Its excellent performance and wide range of uses provide strong support and guarantee for the sustainable development of all walks of life.