磨矿预先筛分工艺的工业实践

The process of prescreening for grinding

新疆某铜矿根据原矿含泥多的性质增设磨矿预先筛分,为综合评价其在生产中的使用效果,考察了原矿、筛上产品、筛下产品、球磨排矿、旋流器沉砂和溢流的粒度组成情况,并通过增设前后技术经济指标对比,证实了预先筛分对提高磨机利用系数、降低能耗、提高产能起到明显促进作用,此项工艺的成功应用,对含泥多、粒度细的矿山企业起到良好的示范效果。

A process of prescreening before grinding has been added for a copper ore with high slime content in Xinjiang .In order to evaluate the effects on practical production ,the particle size composition of the raw ore ,oversize fraction and undersize fraction of screening ,the discharge from a ball mill and the overflow and underflow from a hydrocyclone was analyzed .Compared with without prescreening ,adding of the process is beneficial for technical and economical indicators ,such as promoting the utilization factor of a ball mill ,reducing energy consumption and increasing the productivity .The successfully utilization of the process of prescreening set an example for the concentration of high slime content or fine-grained ore .