This paper analyzed the mechanism of precipitation floatation, discussed the technology of selective precipitation floatation, the method of sulfide precipitation floatation can treat wastewater containing heavy metal ion and reclaim valuable metals.

• 摘要对沉淀浮选机理进行了分析，讨论了选择性沉淀－浮选技术，论述了硫化沉淀浮选法不仅能处理矿山含重金属离子废水，同时还能回收其中的有用金属。