西藏某难处理氧化铜矿石浮选试验

西藏某铜矿石为高氧化率、嵌布粒度细、脉石矿物易泥化的难选氧化铜矿石，铜品位为1.76%，铜氧化率高达44.32%。根据矿石性质的特点，采用硫化铜矿物和氧化铜矿物分步浮选-混合精选流程进行了浮选试验。结果表明，矿石在磨矿细度为-0.074 mm占85%情况下，以水玻璃为矿泥的抑制剂和分散剂、戊基黄药为捕收剂、硫化钠为氧化铜矿物的硫化剂、硫酸铵为辅助活化剂、松醇油为起泡剂，通过2粗2精2扫流程处理，获得了铜品位为21.19%，铜回收率为78.74%的铜精矿。

Flotation Experiment on a Refractory Oxide Copper Ore in Tibet

With the feature of high oxidation,fine dissemination size and the easy-to-slime gangues,a refractory copper oxide ore in Tibet has copper grade of 1. 76%,and copper oxidation rate 44. 32%. According to the characteristic of the copper oxide ore,a technological process of flotation separation was adopted through the process of differential rough flotation and com-bined cleaning of sulphide copper ore and oxide copper ore. The results indicated that under grinding fineness of -0. 074 mm for 85%,water glass as inhibitor and dispersant of slime,amyl xanthate as collector,sodium sulfide as vulcanizator of copper oxide minerals,ammonium sulfate as auxiliary activator,and pine oil as frothing agent,a copper concentrate with copper grade of 21. 19% and copper recovery of 78. 74% was obtained by the process of two-rouging,two-cleaning and two-scavenging.