我矿公司选矿厂2003年技改前选厂处理量为20万t/a。选厂处理的矿石为中等硬度,硬度系数f=7左右,选厂工艺流程:破碎采取二段一闭路,磨矿为一段闭路流程,浮选采用优先浮选法,脱水采用两段闭路流程。产品为铅精矿、锌精矿、硫精矿三种产品。破碎给矿粒度350mm以下,破碎产品粒度16m I mine ore dressing plant in 2003 before the transformation plant processing capacity of 200,000 t / a. Selection of plant processing medium hardness, hardness coefficient f = 7 or so, processing plant election process: broken to take a section of closed-circuit, grinding for a closed-loop process, flotation using the preferred flotation method, the use of two closed-loop dehydration process. Products for the lead concentrate, zinc concentrate, sulfur concentrate three products. Broken to mine particle size below 350mm, broken product size 16m