丽江某难处理铜尾矿硫化浮选铜的试验研究

丽江某难处理氧化铜矿尾矿品位为0.58%,原矿中铜矿物种类多,矿石可浮性差异大,氧化率高,钙镁等碱性脉石含量较高,矿泥含量较高,属于泥质铜矿。大量矿泥的存在不仅消耗大量药剂,增加了操作控制难度,导致铜精矿品位和回收率低。因此,在原矿性质研究基础之上,试验采用两次粗选、两次扫选、一次精选的工艺流程,通过添加高效活化剂HS,有效地活化了目的矿物的上浮,最终获得了铜品位15.36%,铜回收率为83.80%的铜精矿,试验指标良好。

Study on concentration of copper from the tailings of a Refractory copper Ore using sulphidization flotation

The copper grade of tailings of a refractory copper ore is 0.58% and it contains many species of copper minerals with the characteristics of obvious difference in floatability,high oxidation rate,high content of alkali gangue such as calcium and magnesium and high content of slime,belonging to a slime-bearing copper oxide ore.The existence of large quantity of slime not only consumes reagents,but also makes the operation more difficult,resulting in low grade and low recovery of the copper concentrate.Therefore,on the basis of studying the ore properties,the technological flowsheet of two roughing,two scavenging and one cleaning was adopted by adding the activator HS,which effectively activated the flotation of minerals.Finally,a copper concentrate with a grad of 15.36% Cu and a recovery of 83.80% could be obtained.The index is satisfactory.