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过程工程学报 ›› 2020, Vol. 20 ›› Issue (8): 912-920.DOI: 10.12034/j.issn.1009-606X.219319

• 反应与分离 • 上一篇    下一篇

云南高泥尾矿铅锌分离实验研究

纪慧超1,2， 刘全军1,2*， 江 旭2， 董敬申2   

  1. 1. 复杂有色金属资源清洁利用国家重点实验室，云南 昆明 650093 2. 昆明理工大学国土资源工程学院，云南 昆明 650093
  • 收稿日期:2019-10-10 修回日期:2019-12-12 出版日期:2020-08-24 发布日期:2020-08-24
  • 通讯作者: 刘全军 kmliuqj@sina.com
  • 基金资助:
    铜砷分离浮选中药剂的翼庇效应研究

Experimental study on separation of lead and zinc from tailings with high mud content in Yunnan Province

Huichao JI1,2, Quanjun LIU1,2*, Xu JIANG2, Jingshen DONG2   

  1. 1. State Key Laboratory of Complex Nonferrous Metal Resources Clean Utilization, Kunming, Yunnan 650093, China 2. Faculty of Land Resource Engineering, Kunming University of Science and Technology, Kunming, Yunnan 650093, China
  • Received:2019-10-10 Revised:2019-12-12 Online:2020-08-24 Published:2020-08-24
  • Contact: LIU Quan-jun kmliuqj@sina.com
  • Supported by:
    Study on the Winged Effect of Copper and Arsenic Separation and Flotation Agents

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摘要： 针对云南高泥尾矿铅锌嵌布粒度细、泥化严重、性质相对复杂的技术难点，进行了铅锌分离实验研究，采用泥砂分级别浮选-重选联合工艺流程，有效分离了铅锌，实现了该复杂尾矿资源的综合回收利用。结果表明，该矿中铅含量为4.29wt%，锌含量为4.99wt%，铅主要以白铅矿和铅铁矾的形式存在，铅和铁相互交代形成不同的包裹形式，分离难度极大；锌主要以氧化锌的形式存在，氧化程度较深，锌氧化率达99%，且主要为难选的异极矿。最终通过闭路选矿流程，获得铅品位33.87%，回收率62.53%的铅精矿；铅精矿中银品位142.50 g/t，银回收率30.92%；获得锌品位15.21%、回收率47.82%的锌精矿。

关键词: 尾矿, 铅锌分离, 浮重联合, 高氧化率

Abstract: The separation of lead and zinc from tailings with high mud content in Yunnan was examined, which was characterized by a fine particle size, severe argillization, and relatively complex properties. A combination of flotation and gravity separation of mud and sand was adopted to effectively separate lead and zinc and realized the comprehensive recovery and utilization of the complex tailing resources. Results revealed that the lead content was 4.29wt% and that the zinc content was 4.99wt%. Lead mainly existed as cerussite and plumbojarosite. Lead and iron metasomatize to form different wrapping forms, making separation extremely difficult. Zinc mainly existed as zinc oxide, which exhibited a high degree of oxidation. Zinc oxidation rate reached up to 99%, and it was mainly difficult to separate hemimorphite. Ultimately, the lead concentrate with a lead grade of 33.87% and a recovery rate of 62.53% were obtained by the closed-circuit beneficiation process; the silver content in the lead concentrate and its recovery rate were 142.50 g/t and 30.92%, respectively; the zinc concentrate with a zinc grade of 15.21% and a recovery rate of 47.82% were obtained.

Key words: tailings, separation of lead and zinc, Combination of flotation and gravity, high oxidation rate