云南水源地区某氧化铜矿石选矿试验

Experiment on Mineral Processing of Copper Oxide Ore of Shuiyuan Region in Yunnan

云南水源某铜矿石铜品位为0.88%,56.6%的铜以硫化铜形式存在,43.4%的铜以氧化铜形式存在。矿石矿物组成复杂、泥化现象严重。为给该铜矿石的合理开发利用提供参考,进行了先浮选硫化铜矿物再浮选氧化铜矿物的工艺流程试验。结果表明,在磨矿细度为-200目占80%条件下,以CaO(加入磨机中)和水玻璃为抑制剂、丁黄药为捕收剂经1粗2精硫化铜浮选,硫化铜浮选尾矿经水力旋流器脱泥后,沉砂以硫化钠为活化剂、羟肟酸钠+丁黄药为捕收剂经1粗2精2扫氧化铜浮选,获得的混合铜精矿铜品位为20.13%、回收率为72.81%。氧化铜浮选前经水力旋流器脱泥减轻了矿泥在矿浆中的循环、积累现象,使精矿由四级品提高到三级品,具有较好的经济效益。

There is 0. 88% Cu in a copper ore from Shuiyuan of Yunnan Province, in which copper sulphide ore accounts for 56. 6%, and copper oxide ore accounts for 43.4%. Mineral composition is complex with high content of mud and gangue mineral. In order to provide reference for reasonable exploitation and utilization of the copper ore, technological process experiment of flotation of copper sulphide ore firstly and then flotation of copper oxide ore was adopted. The results showed that, under the grinding fineness of -200 mesh 80% ,with CaO（ added into the mill） and sodium silicate as inhibitors,butyl xanthate as collector, via one roughing-two cleaning copper sulphide flotation, tailings of copper sulphide flotation deslimed by hydrocyclone, and sand setting with sodium sulfide as activator, sodium hydroxamate and butyl xanthate as collectors, via one roughingtwo cleaning-two scavenging copper oxide flotation, mixed copper concentrate with copper grade of 20. 13% and recovery of 72. 81% was obtained. Desliming by hydrocyclone before copper oxide flotation reduced the circulation and accumulation phenomenon of pulp slurry ,which result in concentrate reach Grade Three from Grade Four, thus have favorable economic benefit.