某铜矿铜钴有价元素综合回收技术研究  

Research on Comprehensive Recovery Technology of Valuable Elements of Copper and Cobalt in a Copper Ore

作　　者：许永伟 许鹏飞[2] 华金仓 陶武玲 岳显林 毛益林[3] 王晓慧[3] XU Yongwei;XU Pengfei;HUA Jincang;TAO Wuling;YUE Xianlin;MAO Yilin;WANG Xiaohui(Sichuan Huidong Daliang Mining Co.,Ltd.,Huidong 615200,Sichuan,China;College of Chemistry&Chemical Engineering,Lanzhou University,Lanzhou 730000,China;Institute of Multipurpose Utilization of Mineral Resources,Chengdu 610041,China)

机构地区：[1]四川会东大梁矿业有限公司,四川会东615200 [2]兰州大学化学化工学院,兰州730000 [3]中国地质科学院矿产综合利用研究所,成都610041

出　　处：《有色金属(选矿部分)》2025年第3期65-72,共8页Nonferrous Metals(Mineral Processing Section)

基　　金：四川省重点研发计划项目(2022YFS0453)。

摘　　要：铜、钴资源是我国重要的矿产资源,对我国的发展起着战略性作用。某铜矿伴生钴,矿石中铜、钴品位分别为1.01%、0.01%,具有综合利用的价值。为高效利用该含钴铜矿资源,提高经济价值,通过工艺矿物学手段深入分析了原矿性质,该矿石含硅量较高,其组分和嵌布关系复杂,严重影响了选矿过程中含钴矿物的综合回收。基于工艺矿物学研究结果,开展了浮选条件试验和全流程闭路实验,确定了适宜的浮选工艺流程及工艺条件,获得了显著效果。最终确定“铜钴混合浮选—铜钴分离”的工艺技术流程,混合浮选采用“一次粗选、三次精选、两次扫选”流程,分离浮选采用“一次粗选、一次精选、两次扫选”流程。当磨矿细度为-0.074 mm占75%、氢氧化钠用量为7500 g/t、硫酸铜用量750 g/t、丁基黄药用量400 g/t时,选矿指标最优,重点针对铜钴分离开展了详细的试验,采用粗精矿再磨及黄铁矿组合抑制剂“石灰+EMT-22”,实现了铜钴有效分离,当粗精矿再磨细度为-0.045 mm粒级占66.40%,石灰用量为5000 g/t,EMT-22用量为800 g/t时,分离效果最好。实验室闭路实验可获得产率3.77%、铜品位24.61%、铜回收率92.11%的铜精矿,以及产率1.08%、钴硫精矿中钴品位0.29%、钴回收率31.45%的钴硫精矿。研究结果达到了对铜、钴等矿物综合回收的目的,为高效开发利用该铜矿资源及类似资源提供了技术参考。Copper and cobalt resources are important mineral resources in China and play a strategic role in its development.A certain copper mine is associated with cobalt,and the copper and cobalt grades in the ore are 1.01%and 0.01%,respectively,which have comprehensive utilization value.In order to efficiently utilize the cobalt containing copper ore resources and improve economic value,the properties of the original ore were analyzed in depth through process mineralogy methods.The ore has a high silicon content,and its composition and distribution relationships are complex,which seriously affects the comprehensive recovery of cobalt containing minerals in the beneficiation process.Based on the research results of process mineralogy,flotation condition tests and full process locked-cycle tests were carried out,and suitable flotation process flowsheet and conditions were determined,achieving significant results.The final technological process of“copper-cobalt bulk flotation-copper cobalt separation”was determined.The bulk flotation adopted the process of“one roughing,three cleanings,and two scavengings”,while the separation flotation adopted the process of“one roughing,one cleaning,and two scavengings”.When the grinding fineness is-0.074 mm accounting for 75%,the sodium hydroxide dosage is 7500 g/t,the copper sulfate dosage is 750 g/t,and the butyl xanthate dosage is 400 g/t,the beneficiation indexes are optimal.Detailed tests were conducted on copper and cobalt separation,using a combination depressant of rough concentrate regrinding and pyrite“lime+EMT-22”to achieve effective separation of copper and cobalt.When the rough concentrate regrinding fineness is-0.045 mm,accounting for 66.40%,the lime dosage is 5000 g/t,and the EMT-22 dosage is 800 g/t,the separation effect is the best.The locked-cycle tests in the laboratory can obtain copper concentrate with a yield of 3.77%,a copper grade of 24.61%,and a copper recovery of 92.11%,as well as cobalt-sulfur concentrate with a yield of 1.08%,a cobalt grade of

关 键 词：铜矿 硫钴精矿 铜钴混合浮选 铜钴分离 综合回收 

分 类 号：TD952[矿业工程—选矿]