铜绿山铜铁矿深部矿石中铜的可选性研究

为解决铜绿山铜铁矿进入井下深部开采后因矿石性质变化造成的选矿指标恶化问题,在工艺矿物学研究基础上,对该矿深部矿石进行了铜的可选性试验。试验结果表明:将磨矿细度从目前现场生产所采用的-0.074 mm占63%~70%提高到-0.074 mm占85.9%,采用异步浮选流程,以单一丁黄药作捕收剂,可获得含铜22.85%,含金14.27 g/t,含银85.69 g/t的铜精矿,相应的铜、金、银回收率分别为93.72%,94.83%,82.34%,而以丁黄药+丁胺黑药组合药剂作捕收剂,可使铜、金、银的回收率提高1~2个百分点,但铜、金、银品位略有降低。

Study on the Beneficiation Ability of Copper from Deep Ore-body of Tonglushan Copper Iron Mine

To resolve the deterioration problems of mineral indicators caused by ore properties variation during the process of underground deep mining in Tonglushan copper iron mine，the beneficiation ability tests of copper for deep ore-body is made，based on the process mineralogy research.The results showed that：when the grinding fineness at the current production was improved from -0.074 mm 63% to 70% to -0.074 mm 85.9%，and the asynchronous flotation process was adopted with single butyl xanthate as collector，copper concentrate containing copper 22.85%，gold 14.27 g/t，silver 85.69 g/t at a copper，gold，silver recovery of 93.72%, 94.83%，82.34% respectively were achieved.While butyl xanthate + butylamine black were used as collectors，the recovery of copper，gold，silver can be increased by 1 to 2%，but their grades are slightly decreased.