一、前言当前,环境保护和资源的有效综合利用已成为选矿急待解决的突出课题,而污水净化和从稀溶液提取有价元素则是其中重要一环。离子浮选技术是解决上述问题的有效方法之一,它与其他方法相比,具有选择性好,脱除效率和富集比高等优点。该法自1937年首先由兰格妙尔(Langmuir)提出后,就引起日本、苏联、南非等许多国家重视。经过三十多年试验室研究工作,自70年代初该技术已开始逐步走上工业化。日本已成功地用于冶炼厂和选矿厂 I. INTRODUCTION At present, the effective utilization of environmental protection and resources has become a prominent issue urgently needed for beneficiation. And the purification of sewage and the extraction of valuable elements from dilute solutions are an important part of the project. Ion flotation technology is one of the effective methods to solve the above problems. Compared with other methods, ion flotation technology has the advantages of good selectivity, high removal efficiency and enrichment ratio. After the law was first proposed by Langmuir in 1937, it attracted the attention of Japan, the Soviet Union, South Africa and many other countries. After more than thirty years of laboratory research, the technology has been gradually industrialized since the early 1970s. Japan has been successfully used in smelters and concentrators