引言筛分在大多数的矿物分选过程中起着重要的作用,筛分效率的提高在整个选矿工艺过程中有其重要意义。最近所进行的、指在确定树脂筛网改善筛分作业的原因调查中,曾在西南非联合金刚石矿山拍摄了以不锈钢和聚胺树脂作筛网的振动筛的电影,所有的胶片都显示出一个明显的特点:颗粒与筛网的接触时间很短。大量颗粒“飘浮”在筛上的时间常常占物料流过筛面时 Introduction Screening plays an important role in most mineral separation processes. The improvement of screening efficiency is of great importance throughout the beneficiation process. Recently conducted, referring to the investigation of the causes of deteriorating the screening of resin screens, a film of shale shaker with stainless steel and polyamine resin for screening was taken at the United Diamond Mine in South West Africa. All the films showed One obvious feature: the contact time between the particles and the screen is very short. The time it takes for a large number of particles to “float” on the screen often accounts for the flow of material through the screen surface