武汉工程大学学报2026，Vol.48Issue(2)：119-123,5.DOI:10.19843/j.cnki.CN42-1779/TQ.202411009
铅锌尾矿中重金属铅的选择性浸出过程研究
Selective leaching process of lead from lead-zinc tailings
摘要
Abstract
To efficiently recover lead(Ⅱ)from lead-zinc tailings,a selective leaching process was investigated using sodium citrate as the leaching agent and hydrogen peroxide as the oxidant.The effects of sodium citrate concentration,hydrogen peroxide concentration,pH,solid-to-liquid ratio,and leaching time on the leaching rate were examined.Results showed that the leaching rate of Pb2+reached 90.1%,at a sodium citrate concentration of 0.50 mol/L,hydrogen peroxide concentration of 0.02 mol/L,pH of 7,solid-to-liquid ratio of 1∶100(g/mL),and leaching time of 360 min.Meanwhile,the leaching rates of Zn2+,Ca2+,Fe3+,and Mg2+were 9.1%,57.6%,2.9%,1.7%,respectively.This indicates that efficient leaching of Pb2+was achieved while suppressing the leaching of competing heavy metal ions such as Zn2+and Fe3+,thereby reducing the difficulty of subsequent selective separation and recovery of Pb2+from the leachate.关键词
选择性浸出/重金属/铅(Ⅱ)/柠檬酸钠/浸出率Key words
selective leaching/heavy metal/lead(Ⅱ)/sodium citrate/leaching ratio分类
资源环境引用本文复制引用
汪彦,安巧熙,余军霞..铅锌尾矿中重金属铅的选择性浸出过程研究[J].武汉工程大学学报,2026,48(2):119-123,5.基金项目
湖北省自然科学基金(2021CFA032) （2021CFA032）
