关键词: 地下卸矿站, 喷雾防尘, 矿尘, 湿润剂, 正向渗透试验

Abstract: The technology and system design of wetting agent spraying for dust control for an underground ore unloading station were studied.The chemical composition and size distribution of mine dust were investigated, and the wetting ability of several wetting agents was studied by the down-ward capillary seep experiment for determining the wetting agent composition.The experimental results show that the wetting agent performance was affected by dust size distribution and the type and mass fraction of wetting agents as well as the test time.According to the features of the operation and the dust forming in the underground unloading station, an effective spraying system for dust control was used to depress the dust, evidently improving the environment of the ore unloading station.The dust control efficiency was influenced by water supply pressure and nozzle type.

Key words: Underground ore unloading station, Spraying for dust control, Mine dust, Wetting agent, Down-ward capillary seep experiment