强化筛分作业,提高筛分工作效率,是选矿厂降低破碎粒度,提高破碎效率的有效措施之一,也是各选厂挖潜革新,进行技术改造中急需解决的薄弱环节之一。目前国际上研制和使用的筛分机械,品种虽多,但振动筛仍是其中最主要的设备,且国内各选矿厂的筛分作业中,广泛使用自定中心振动筛。本文用振动理论,在分析自定中心振动筛的工作原理的基础上,结合筛分动力学和筛分概率,对其参数的选择进行探讨,为筛分实践提供理论依据。 Strengthening the screening operation and improving the screening efficiency are one of the effective measures for the concentrator to reduce the crushing grain size and improve the crushing efficiency. It is also one of the weak points urgently needed to be solved in the process of technological innovation. Currently developed and used in the international screening machinery, although the variety of varieties, but the vibrating screen is still one of the most important equipment, and the domestic screening plant operations, the widely used self-center shaker. In this paper, based on the analysis of the working principle of the self-centering vibrating screen, combining with the screening dynamics and the screening probability, this paper discusses the choice of parameters and provides a theoretical basis for the screening practice.