云南某低品位硫氧混合铜矿浮选试验研究  

Experimental Study on Flotation of a Low-grade Sulfur-Oxygen Mixed Copper Ore in Yunnan

作　　者：杨凯志 李汉文 胡真 姚艳清 邹坚坚 YANG Kaizhi;LI Hanwen;HU Zhen;YAO Yanqing;ZOU Jianjian(Institute of Resources Utilization and Rare Earth Development,Guangdong Academy of Sciences,Guangzhou 510651,China;State Key Laboratory of Rare Metal Separalion and Comprehensive Utilization,Guangzhou 510651,China;Guangdong Provincial Key Laboratory of Mineral Resources Development and Comprehensive Utilization,Guangzhou 510651,China)

机构地区：[1]广东省科学院资源利用与稀土开发研究所,广州510651 [2]稀有金属分离与综合利用国家重点实验室,广州510651 [3]广东省矿产资源开发和综合利用重点实验室,广州510651

出　　处：《有色金属（选矿部分）》2022年第1期47-53,共7页Nonferrous Metals（Mineral Processing Section）

基　　金：国家重点研发计划项目(2019YFC1904202);国家自然科学基金资助项目(91962215)。

摘　　要：云南某低品位硫氧混合铜矿铜含量为1.03%,是主要有价金属,其中硫化铜占有率为71.67%,氧化铜占有率为28.33%,二氧化硅和氧化钙含量分别为43.26%和12.66%,硅酸盐和碳酸盐是主要的脉石矿物。通过系统的试验研究,确定采用异步浮选—分段硫化工艺,先选硫化铜再选氧化铜,硫化铜浮选采用丁基黄药作为捕收剂,石灰作为精选抑制剂,氧化铜浮选采用丁基黄药+丁铵黑药作为捕收剂,硫化钠为硫化剂,CMC作为精选抑制剂。两段粗选作业均不加抑制剂保证铜回收率,精选作业加入抑制剂提高铜品位,最终可获得铜品位为18.95%,铜回收率为66.27%的硫化铜精矿和铜品位为20.11%,铜回收率为19.87%的氧化铜精矿,铜总回收率为86.14%。The copper content of a low-grade sulfur-oxygen mixed copper ore in Yunnan is 1.03%,which is the main valuable metal.Among them,copper sulfide accounts for 71.67%,copper oxide accounts for 28.33%,silicon dioxide and calcium oxide accounts for 43.26%and 12.66%respectively.Silicate and carbonate are the main gangue minerals.Through systematic experimental study,the asynchronous flotation staged sulfurization process was determined,in which copper sulfide was selected first and then copper oxide was selected.Butyl xanthate was used as collector and lime as cleaning depressant in the flotation of copper sulfide,and butyl xanthate+ammonium di butyl dithiophosphate was used as collector,sodium sulfide as vulcanizing agent and CMC as cleaning depressant in the flotation of copper oxide.In the two stages of roughing operation,depressant is not added to ensure copper recovery,while in the cleaning operation,depressant is added to improve copper grade.Finally,copper sulfide concentrate with copper grade of 18.95% and copper recovery of 66.27%,and copper oxide concentrate with copper grade of 20.11% and copper recovery of 19.87% can be obtained and the total copper recovery is 86.14%.

关 键 词：铜矿 硫氧混合矿 异步浮选 分段硫化 

分 类 号：TD952[矿业工程—选矿] TD923