云南某低铜电炉渣综合回收铜的浮选试验研究  

Experimental research on comprehensive recovery of copper from a low copper electric furnace slag in Yunnan province

作　　者：李超[1] 罗溪梅[1,2] 韦达勇 杨文 宋振国 王云帆[2,4] LI Chao;LUO Ximei;WEI Dayong;YANG Wen;SONG Zhenguo;WANG Yunfan(Faculty of Land and 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;State Key Laboratory of Mineral Processing Science and Technology,BGRIMM Technology Group,Beijing 100160,China;Faculty of Metallurgical and Energy Engineering,Kunming University of Science and Technology,Kunming 650093,China)

机构地区：[1]昆明理工大学国土资源工程学院,昆明650093 [2]昆明理工大学复杂有色金属资源清洁利用国家重点实验室,昆明650093 [3]矿物加工科学与技术国家重点实验室,北京100160 [4]昆明理工大学冶金与能源工程学院,昆明650093

出　　处：《矿冶》2023年第6期27-34,81,共9页Mining And Metallurgy

基　　金：国家自然科学基金项目(51964025;52264030);矿物加工科学与技术国家重点实验室(BGRIMM-KJSKL-2023-10);云南省万人计划青年拔尖人才项目(YNWR-QNBJ-2018-167)。

摘　　要：云南某铜冶炼渣含铜量0.82%,铜渣中的铜组分主要是以次生硫化铜和原生硫化铜的形式存在,氧化铜含量较少。为了综合回收该二次资源中的铜,解决该选矿厂尾矿品位偏高的问题,进行了大量条件试验研究。研究发现不同物相的铜之间存在可浮性和浮选速度差异,因此采用一段快速浮选将部分易浮铜矿作为合格精矿选出,再对快速浮选的尾矿进行活化捕收,不仅简化了浮选流程,且使资源得到了充分利用。条件试验结果表明,在一段磨矿细度-45μm含量占90%,组合捕收剂乙基黄药40 g/t+Z-20040 g/t、活化剂硫化钠200 g/t、分散剂水玻璃400 g/t的条件下,浮选指标最优。全流程闭路试验结果表明,采用两段粗选两段精选两段扫选的浮选工艺流程,可得到铜品位22.64%、回收率77.03%的合格铜精矿,尾矿品位最终降为0.182%。The copper content of a copper smelting slag in Yunnan is 0.82%.The copper in the copper slag mainly exists in the form of secondary copper sulfide and primary copper sulfide,with less copper oxide content.In order to comprehensively recover copper from the secondary resource and solve the problem of high grade of tailings in the concentrate,a large number of experimental studies on process parameters were carried out.Research shows that there are differences in floatability and flotation speed between different phases of copper.Therefore,one-stage rapid flotation is used to select some easily floatable copper ores as qualified concentrates,and then the tailings of rapid flotation are activated and collected.This not only simplifies the flotation process,but also makes full use of resources.The results of conditional test show that the flotation index is the best under the conditions of primary grinding fineness of-45μm accounting for 90%,combined collector ethyl xanthate 40 g/t+Z-20040 g/t,activator sodium sulfide 200 g/t and dispersant sodium silicate 400 g/t.The closed-circuit test results show that qualified copper concentrate with copper grade of 22.64%and copper recovery rate of 77.03%can be obtained by using the flotation process with two roughings,two cleanings and two scavenges,while the tailings grade is 0.182%.

关 键 词：低铜炉渣 快速浮选 组合捕收剂 乙基黄药 Z-200 

分 类 号：TD952[矿业工程—选矿]