摘要
云南某低品位铜矿石铜、金品位分别为0.35%、0.114 g/t,现场以丁基黄药为捕收剂,在磨矿细度为-0.075 mm占74.30%的条件下浮选选铜,并使金在铜精矿中富集,获得的铜精矿铜金回收率分别为91.60%和45.70%。为提高金的回收效果,以现场工艺流程为基础,以提高金回收率为主要目标进行了浮选选铜试验。结果表明,在磨矿细度为-0.075 mm占80%的情况下,以Z-200+丁铵黑药为捕收剂,730A为起泡剂,采用1粗3精2扫、中矿顺序返回的闭路试验流程回收铜和金,最终获得的铜精矿铜品位为22.48%、含金4.53 g/t、铜回收率为92.85%、金回收率为56.30%。可见,以Z-200+丁铵黑药为捕收剂,不仅能显著提高铜精矿金回收率10.60个百分点,而且能小幅提高铜回收率1.25个百分点。
A copper ore in Yunnan Province contains 0.35% Cu, 0. 114 g/t Au, the recovery of copper and gold is 91.60% and 45.70% respectively through the on-site process ,at the grinding fineness of 74.30% -0. 075 mm using sodium butyl xanthate as copper collector. To improve the recovery of associated gold, copper flotation experiments were conducted based on the on-site process with gold recovery improving as goals. The results showed that copper concentrate with 22.48% Cu,4.53 g/t Au, Cu and Au recovery of 92.85% and 56.30% respectively was obtained through the closed-circuit flotation process of one roughing-three cleaning-two scavenging at grinding fineness of 80% -0.075 mm, and with ammonium dibutyl dithiophosphate and Z-200 as combined collector and 730A as frother. Therefore, Z-200 and ammonium dibutyl dithiophosphate as combined collector not only improves the index gold recovery in copper concentrate by 10.60 percentage points ,but also in- crease copper recovery by 1.25 percentage points.
出处
《金属矿山》
CAS
北大核心
2015年第9期58-61,共4页
Metal Mine
基金
云南省应用基础研究计划项目(编号:2014FA027)
关键词
浮选
铜矿石
伴生金
组合捕收剂Z-200+丁铵黑药
Flotation, Copper ore, Associated gold, Combined collector Z-200 and ammonium dibutyl dithiophosphate
