The pollution production coefficient of coal dust stored in the open air during loading and unloading is 3.53-6.41Kg/t coal/year (according to Technical Guidelines for Verification of Pollutant Discharge in Some Industries). Taking the consumption of raw coal as 511,111 tons per year, the pollution production coefficient takes the maximum value in the calculation process. After using the wind and dust suppression wall, according to the dust reduction rate of 81%, 2,564 tons of coal can be saved every year. If the pulverized coal loss caused by strong wind and dust is added, the overall coal loss will reach about 1%, and about 5111 tons of coal can be saved every year.

with the rapid development of China's economy, the storage and transportation of bulk materials such as coal, mineral powder and sand ash are increasing, and the dust brought by it is attracting more and more attention. With the further tightening of national laws and regulations on energy conservation and environmental protection, dust pollution and energy consumption in coal yards have become the focus of local government management. However, the total blockade project for coal plants is not only costly, but also the stacking area is limited by the ceiling span and the homework requirements of the bucket wheel machine. In addition, it is difficult to popularize and implement due to factors such as ventilation, heat insulation, dust prevention, lighting, narrow space and inconvenient access for vehicles. The technology of wind-proof and dust-suppression wall wind-proof and dust-suppression net, which has been widely adopted abroad, is increasingly welcomed by enterprises because of its small investment and good dust-suppression effect.