Contact: Shao Gong, Zhisheng Weihua 158 -- 1093 -- 6203
The phenomenon of caking and arching often occurs in the coal bunker, which is not only related to the structural form of the bunker, the surface state of the inner wall, the nature of the coal, the moisture content, the storage time and other factors, but also has a great relationship with the surface energy and activity of the coal. Because large particles become small particles in the pulverization process of coal blocks, the surface area increases, the surface free energy of particles increases, the reaction activity increases, and it is easy to absorb other Substance.
A platform with small inclination angle is formed on the inner wall of the coal bunker due to the unevenness, which prevents the falling of pulverized coal and provides a place for the retention of pulverized coal, and also increases the friction coefficient of the inner wall of the coal bunker. The greater the friction between the coal material and the inner wall of the coal bunker, the greater the sliding resistance, the easier the formation of coal arch.
According to the above analysis, the smoother the inner wall surface of the coal bunker is, the smaller the surface energy is, and the less likely the coal particles are to remain. The smaller the friction coefficient between the pulverized coal and the inner wall of the coal bunker, the easier the pulverized coal will slip off and will not agglomerate to form a coal arch.
Tang Gong introduced the wear-resistant products produced by Beijing Zhisheng Weihua Co., Ltd Anticorrosive coating use ceramics The particles are filler The hybrid modified high-temperature resin is used as the film forming liquid, the coating hardness can reach 9H, and the wear-resistant, anti-corrosion and waterproof properties can meet the requirements of the coal bunker inner wall coating. Fluoric acid resistant anti-corrosion coating The polytetrafluoro modified resin with low surface energy is used, which has low surface activity and low affinity with water, and can prevent the adhesion of water containing pulverized coal to the inner wall.
