摘要
云南某大型斑岩型铜矿铜品位0.32％,伴生有钼,具有综合回收价值.采用一次粗选、两次精选、两次扫选工艺流程综合回收矿石中的铜和钼等金属.系统研究工艺参数条件如原矿磨矿细度、粗精矿再磨细度、捕收剂、抑制剂、起泡剂种类及用量等对铜回收的影响,并考察伴生金属钼、金和银的回收情况.结果表明,捕收剂PL-307和起泡剂HCLL对铜浮选回收效果好,在原矿磨矿细度-0.075 mm占比65％、粗精矿再磨细度-0.045 mm占比90％、捕收剂PL-307用量120 g/t、抑制剂石灰用量300 g/t、起泡剂HCLL用量20 g/t的最佳参数条件下,经过闭路试验可获得产率1.23％、铜品位22.84％、铜回收率87.79％的选矿指标,铜精矿产品含钼0.398％、金4.33 g/t、银62.50 g/,其中钼回收率为71.99％、金回收率为66.57％、银回收率为14.48％,伴生金属钼和金也得到了较好的回收,选别指标好.
Abstract
A large porphyry copper deposit in Yunnan has a copper grade of 0.32％,accompanied by molybdenum,and has comprehensive recovery value.The comprehensive recovery of metals such as copper and molybdenum from ore is achieved through a process of one rough selection,two fine selections,and two sweeping selections.Systematically study the effects of process parameters such as raw ore grinding fineness,coarse concentrate regrinding fineness,collectors,inhibitors,types and amounts of foaming agents on copper recovery,and examine the recovery of associated metals such as molybdenum,gold,and silver.The results showed that the collector PLC and frother HCLL had good effects on copper flotation recovery.Under the optimal parameter conditions of-0.075 mm fineness in the original ore grinding,65％in the coarse concentrate regrinding,90％in the coarse concentrate regrinding,120 g/t collector PL-307,300 g/t inhibitor lime,and 20 g/t foaming agent HCLL,a closed circuit test was conducted to obtain beneficiation indicators with a yield of 1.23％,a copper grade of 22.84％,and a recovery rate of 87.79％.The copper concentrate product contained 0.398％molybdenum Gold is 4.33 g/t,silver is 62.50 g/,with a molybdenum recovery rate of 71.99％,gold recovery rate of 66.57％,and silver recovery rate of 14.48％.The accompanying metals molybdenum and gold have also been well recovered,with good separation indicators.
基金项目
云南省重大科技专项计划项目(202202AB080012)
维普
万方数据