First, the importance of refractory materials
Refractory materials are an integral part of the production process of Qingdao Iron and Steel Holding Group. In the harsh environment of iron and steel smelting, such as high temperature and high pressure, refractory materials can withstand extreme physical and chemical effects to ensure the stable operation and safe production of smelting equipment. It is like a strong shield for steel production, providing a reliable guarantee for efficient and continuous production.
Second, the type of refractory materials used
1. Acid refractory materials: siliceous materials as the main components, with good acid slag corrosion resistance, in some specific production links of Qingdao Iron and steel plays an important role, such as in the processing of high silicon content of the charge, can effectively resist the erosion of acid slag, to ensure the service life of the lining.
2. Basic refractories: mainly including magnesia, dolomite and other refractories. It has good high temperature resistance and alkaline slag erosion resistance, and is suitable for high temperature equipment such as steel converter and electric furnace. In the steelmaking process of Qingdao Iron and Steel, alkaline refractory materials can withstand the high temperature and violent chemical reaction of molten steel, which provides strong support for the production of high-quality steel.
3. Neutral refractories: such as high aluminum refractories, some characteristics of both acidic and alkaline refractories, with high refractoriness and good chemical stability. It is widely used in many links such as ironmaking and steelmaking of Qingdao Iron and Steel, and can adapt to different furnace atmosphere and temperature changes.
Third, the selection standard of refractory materials
Qingdao Iron and Steel Holding Group strictly follows the following standards when selecting refractory materials:
1. High refractoriness: it can maintain stable physical and chemical properties under high temperature environment, without softening and melting.
2. Strong erosion resistance: It can resist the erosion of molten steel, slag, etc., and extend the service life.
3. Good thermal stability: it is not easy to break and flake when the temperature changes rapidly.
4. High mechanical strength: it can withstand the pressure and the impact of materials in the furnace.
5. Reasonable cost: under the premise of ensuring quality, choose cost-effective refractory materials to reduce production costs.
Fourth, future development trend
With the continuous development of the iron and steel industry and technological progress, Zhengzhou Highland Refractory Co., Ltd. is actively exploring the application of new refractories. In the future, more attention will be paid to the energy saving and environmental protection performance of refractory materials, and new refractories with higher refractories, better erosion resistance and lower thermal conductivity will be developed and used to improve production efficiency, reduce energy consumption and reduce environmental pollution. Research and development of personalized refractory materials suitable for the characteristics of Qingdao iron and steel production, to provide strong support for the sustainable development of enterprises.
