微细粒孔雀石的三硫代碳酸钠硫化浮选研究  

Study on Sulfide Flotation of Fine Malachite by Sodium Trithiocarbonate

作　　者：彭礼国 方建军[1,2] 刘殿文 何海洋[1] 邱芝莲 秦双 董诗钦 PENG Liguo;FANG Jianjun;LIU Dianwen;HE Haiyang;QIU Zhilian;QIN Shuang;DONG Shiqin(Faculty of Land Resources Engineering,Kunming University of Science and Technology,Kunming 650093,China;State Key Laboratory of Complex Nonferrous Metal Resources Clean Utilization,Kunming 650093,China;Southwest United Graduate School,Kunming 650092,China)

机构地区：[1]昆明理工大学国土资源工程学院,昆明650093 [2]省部共建复杂有色金属资源清洁与利用国家重点实验室,昆明650093 [3]西南联合研究生院,昆明650092

出　　处：《有色金属(选矿部分)》2025年第1期113-120,138,共9页Nonferrous Metals(Mineral Processing Section)

基　　金：云南省重大科技专项项目(202202AG050015)。

摘　　要：随着易选铜矿资源的日趋匮乏,“贫、细、杂”逐渐成为铜矿资源的普遍特征。微细粒氧化铜矿作为未来铜资源的重要补充,其高效回收对实现铜矿资源综合利用至关重要。研究对比了新型硫化剂三硫代碳酸钠(Na_(2)CS_(3))与传统硫化剂硫化钠(Na_(2)S)在微细粒孔雀石浮选中的效果差异,探讨了两种硫化剂对浮选性能的影响及其作用机理。通过单矿物浮选试验,分析了矿浆pH值、硫化剂用量和捕收剂用量对孔雀石回收率的影响。在pH值为9、Na_(2)CS_(3)浓度为2×10^(-4)mol/L、丁基黄药浓度为1×10^(-4)mol/L;pH值为9、Na_(2)S浓度为3×10^(-3)mol/L和丁基黄药浓度为1×10^(-4)mol/L的最佳浮选条件下,孔雀石回收率分别达到92.46%和69.09%,Na_(2)CS_(3)的浮选效果明显优于Na_(2)S。接触角测试、XPS分析、Zeta电位测试和吸附量测试进一步揭示了硫化处理后孔雀石表面化学性质的变化及对后续捕收剂吸附的影响。研究发现,Na_(2)CS_(3)硫化后孔雀石表面生成更多的活性硫化铜,提高了丁基黄药的吸附效果,显著增强了孔雀石的浮选性能。研究为优化微细粒氧化铜矿资源的回收提供了试验验证和理论支持。With the increasing scarcity of copper resources,'poor,fine and complex'has become a common feature of copper resources.As an important supplement to the shortage of copper resources in the future,how to ensure its efficient recovery is an important issue to realize the comprehensive utilization of copper resources.In this study,the effects of new vulcanizing agent sodium trithiocarbonate(Na_(2)CS_(3))and traditional vulcanizing agent sodium sulfide(Na_(2)S)on the flotation of fine malachite were compared,and the effects of two vulcanizing agents on flotation performance and their mechanism were discussed.The effects of pulp pH value,vulcanizing agent dosage and collector dosage on malachite recovery rate were analyzed by single mineral flotation test.At a pH value of 9,Na_(2)CS_(3)concentration of 2×10^(-4)mol/L,butyl xanthate concentration of 1×10^(-4)mol/L;Under the optimum flotation conditions of pH value of 9,Na_(2)S concentration of 3×10^(-3)mol/L and butyl xanthate concentration of 1×10^(-4)mol/L,the recovery of malachite reached 92.46%and 69.09%,respectively.The flotation effect of Na_(2)CS_(3)was significantly better than that of Na_(2)S.Contact angle test,XPS analysis,Zeta potential test and adsorption capacity test further revealed the change of surface chemical properties of malachite after vulcanization treatment and its effect on the adsorption of subsequent collectors.It was found that more active copper sulfide was generated on the surface of malachite after Na_(2)CS_(3)vulcanization,which improved the adsorption effect of butyl xanthate and significantly enhanced the flotation performance of malachite.This study provides experimental verification and theoretical support for optimizing the recovery of fine-grained copper oxide ore resources.

关 键 词：三硫代碳酸钠 微细粒孔雀石 硫化浮选 

分 类 号：TD952[矿业工程—选矿] TD923