摘要
高钙高硅铜矿中元素铜及伴生金银的回收价值高,但实际生产中这些有价成分的回收指标较低,导致企业经济效益不理想。针对矿石性质,采用石灰和硫化钠为矿浆调整剂,丁基黄药与丁基铵黑药联合使用作为捕收剂,在磨矿细度-74μm粒级含量占70%的基础上,进行了浮选药剂优化和闭路试验。在石灰用量1000 g/t、硫化钠用量400 g/t、丁基黄药用量400 g/t、丁基铵黑药用量50 g/t、松醇油用量84 g/t的药剂制度下,采用两次粗选、两次精选、一次扫选、中矿顺序返回的浮选闭路流程,最终获得Cu品位21.45%、回收率90.46%,Au品位7.92 g/t、回收率79.39%,Ag品位453.50 g/t、回收率81.82%的铜精矿。与生产现场指标相比,不仅提高了矿石中铜的浮选回收率,而且极大地提高了矿石中伴生金银的回收效果,浮选指标较为理想。
The element copper and associated gold and silver in copper ores with high content of calcium and silicon have high recovery value,but a low recovery index of these valuable metals was obtained in the practical production,resulting in unsatisfactory economic benefits of enterprise.According to the properties of the ore,lime and sodium sulfide are used as pulp regulator,butyl xanthate and butylammonium black agent are used as collector.On the basis of grinding condition-74μm particle content accounting for 70%,flotation agent optimization test and closed-circuit test are carried out.Under the flotation reagent regime of lime dosage of 1000 g/t,sodium sulfide dosage of 400 g/t,butyl xanthate dosage of 400 g/t,ammonium dibutyl dithiophosphate dosage of 50 g/t,and terpenic oil dosage of 84 g/t,the flowsheet of closed circuit flotation experiments with the order return of middlings was carried out using two-stage roughing,two-stage cleaning,and single-stage scavenging.Ultimately,copper concentrate with 21.45%Cu,7.92 g/t Au and 453.50 g/t Ag was obtained,and the flotation recoveries of Cu,Au,Ag were 90.46%,79.39%,81.82%,respectively.Compared with the flotation production result,it not only increased the flotation recovery of copper in ores,but also grealty improved the recovery of associated gold and silver in ores,and a desired flotation index was obtained.
作者
周芸
丰奇成
ZHOU Yun;FENG Qi-cheng(Faculty of Land Resource Engineering,Kunming University of Science and Technology,Kunming 650093,China;State Key Laboratory of Complex Nonferrous Metal Resources Clean Utilization,Kunming University of Science and Technology,Kunming 650093,China)
出处
《矿冶》
CAS
2020年第3期25-30,共6页
Mining And Metallurgy
基金
国家自然科学基金资助项目(51804144)
云南省应用基础研究计划项目(2018FD035)
中国博士后科学基金特别资助项目(2018T111000)。
关键词
高钙高硅铜矿
伴生金银
浮选回收
联合用药
copper ores with high content of calcium and silicon
associated gold and silver
flotation recovery
combined utilization of flotation reagents
作者简介
第一作者:周芸,本科生,E-mail:zy2946419640@126.com;通信作者:丰奇成,博士,教授,E-mail:fqckmust@163.com。
