甘肃某含金硫化铜矿石浮选试验研究

Experimental Study on Flotation of a Gold Bearing Copper Sulfide Ore

针对甘肃某含金硫化铜矿石黄铁矿、磁黄铁矿等硫铁矿含量较高、难以有效抑制等特点,采用一段磨矿、一次粗选、两次扫选、两次精选流程,药剂制度以石灰和焦亚硫酸钠作硫铁矿抑制剂,丁基黄药为捕收剂,J31为捕收起泡剂,在较低pH值条件下实现了对矿石中铜、金的高效回收。闭路试验获得铜精矿铜品位22.18%,铜回收率92.57%;金品位7.75g/t,金回收率80.41%。

In view of the high content of pyrite and pyrrhotite in a gold bearing copper sulfide ore in Gansu Province,the flowsheet of of one stage grinding,one roughing,two sweeping and two concentrating were adopted.The reagent system was:Lime and sodium pyrosulfite are used as pyrite inhibitors,butyl xanthate as collector and J31 as acapturingand foaming agents.Under the condition of low pH value,copper and gold in the ore can be recovered efficiently.The copper concentrate contains 18.13%copper and 4.87 g/t gold,and the recovery rates of copper and gold are 69.88%and 52.17%respectively.