中文摘要：

内蒙古某铜锡多金属矿石铜品位为1.05%、锡品位为0.47%,主要杂质成分Si O2含量达62.31%。矿石中含铜矿物黄铜矿主要以不规则状存在于石英等脉石矿物中;锡石主要以自形—半自形粒状产出,粒间有黄铜矿等矿物交代。为给该矿石的开发利用提供依据,对其进行了选矿试验研究。结果表明：在磨矿细度为-0.074 mm占75%时,以Y150为铜粗选捕收剂、D300为铜扫选捕收剂、2号油为起泡剂,经1粗2扫浮选可获得铜品位为3.12%、回收率为97.06%的铜粗精矿;铜粗精矿经4次精选2次精扫选,获得的铜精矿铜品位为16.30%、回收率为92.14%;浮铜尾矿经摇床1次重选,可获得锡品位为8.67%、回收率为75.91%锡精矿。

英文摘要：

The mineral composition of Cu-Sn polymetallic ore from Inner Mongolia is complex,with 1.05% copper and 0. 47% tin, the main impurity components SiO2 was up to 62. 31%. Chaleopyrite, the mainly copper mineral, mainly exists in quartz gangue minerals as irregular shape, the cassiterite exists mainly in hypidiomorphic-allotriomorphic structure, intergranular with chalcopyrite and other minerals. To provide technique basis for the utilization of the ore, separation experiment research was carried on. The results show that：copper rough concentrate can be obtained at the grinding fineness of 75% passing 0. 074 mm, with Y150 as rough flotation collector, D300 as scavenging flotation collector, 2# oil as foaming agent, through one roug- hing-two scavenging flotation process, rough concentrate with copper grade of 3.12% , recovery of 97. 06% was obtained, rough concentrate via four cleaning, two scavenging process, copper concentrate with copper grade of 16.30% , copper recovery of 92. 14% can be obtained,tailings of copper flotation via one stage gravity separation by shaking table,tin concentrate with tin grade of 8.67% and recovery of 74. 91% was obtained.