| 铅锌尾矿氧化过程中重金属释放迁移动态 |
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| 引用本文： | 李晓艳,张青伟,洪松涛,刘莹红.铅锌尾矿氧化过程中重金属释放迁移动态[J].矿产综合利用,2022,43(4):6-11. |
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| 作者姓名： | 李晓艳 张青伟 洪松涛 刘莹红 |
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| 作者单位： | 1.桂林理工大学地球科学学院，广西 桂林 541004 |
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| 基金项目： | 《我国典型三稀金属矿床研究与靶区优选》工作项目（12120113078200）；桂林理工大学2019年大学生创新创业训练计划项目（201910596297） |
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| 摘 要： | 铅锌尾矿堆放造成矿山周边环境严重污染，为研究尾矿安全堆放并在堆放过程中去除一定量重金属，以广西大厂鲁塘铅锌尾矿为研究对象，研究在不同氧化剂浓度和不同液固比条件下Zn、Cd、Pb、Cu和As的释放迁移能力。结果表明:氧化环境可以有效促进各元素的释放迁移能力，氧化剂浓度越高各元素迁移出的量也越多；各元素较佳释放迁移的液固比不同，Zn元素的最适合固液比为1∶10，Cd元素的最适合固液比为1∶6，Pb元素的较适合固液比为1∶6，Cu元素的较适合固液比为1∶5，As元素的较适合固液比为1∶6。
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| 关 键 词： | 铅锌矿 重金属 释放迁移 尾矿 |
| 收稿时间： | 2020-07-08 |
Dynamic Study on the Release and Migration of Heavy Metals during the Oxidation of Lead-Zinc Tailings |
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| Affiliation: | 1.School of Earth Sciences, Guilin University of Technology, Guilin, Guangxi, China2.Guilin University of Technology, Guangxi Nonferrous Metal Hidden Deposit Exploration and Material Development Collaborative Innovation Center, Guilin, Guangxi, China3.Guilin University of Technology, Exploration of Nonferrous and Precious Metal Hidden Deposits, Ministry of Education Engineering Research Center, Guilin, Guangxi, China |
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| Abstract: | The dumping of lead-zinc tailings causes serious environmental pollution around the mine. In order to study the safe dumping of tailings and the removal of a certain amount of heavy metals during the dumping process, the release and migration of Zn, Cd, Pb, Cu and As under different oxidant concentrations and different liquid to solid ratios were investigated in lead-zinc tailings of Lutang, Dachang, Guangxi. The results show that the oxidizing environment can effectively promote the release and migration of the elements. The higher the oxidant concentration, the more the elements can be migrated out. The optimum liquid-solid ratio for release and migration varies among the elements, with the most suitable solid to liquid ratio being 1∶10 for Zn and 1∶6 for Cd, 1∶6 for Pb, 1∶5 for Cu and 1∶6 for As. |
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