西南地区铅锌尾矿重金属与残留选矿药剂污染特征

铅锌矿是我国西南地区重要的矿产资源，伴随着铅锌矿山的开采，越来越多的尾矿排入尾矿库进入外环境，重金属和选矿药剂在尾矿库内逐渐累积，容易对周边环境产生威胁。通过分析西南地区三个不同类型尾矿中的重金属含量、重金属形态分布和选矿药剂含量差异，探究不同类型的铅锌尾矿库中重金属与选矿药剂污染特征。结果表明，硫化矿尾矿库与氧化矿尾矿库中重金属形态分布存在差异，尾矿库停用后，选矿药剂有深层迁移的趋势。铅锌尾矿库内重金属和选矿药剂的复合污染需要引起人们重视，本研究可为铅锌尾矿库污染防治提供参考。

Pollution characteristics of heavy metals and residual beneficiation agents in lead-zinc tailings in southwest China

Lead-zinc ore is an important mineral resource in Southwest my country. With the mining of lead-zinc mines, more and more tailings are discharged into the tailings pond and enter the external environment. Heavy metals and beneficiation agents gradually accumulate in the tailings pond, which is easy to The surrounding environment poses a threat. This study explored the pollution characteristics of heavy metals and beneficiation agents in different types of lead-zinc tailings ponds by analyzing the differences in heavy metal content, form distribution and beneficiation agents in three different types of tailings in Southwest China. The results confirmed that there are differences in the distribution of heavy metals in the sulfide ore tailings pool and the oxidation ore tailings pool. After the tailings pool is out of service, the beneficiation agent has a tendency to migrate in the deep layer. The combined pollution of heavy metals and beneficiation agents in lead-zinc tailings ponds needs to be paid attention to. This study provides a reference for pollution prevention and control of lead-zinc tailings ponds.