我国氧化铅锌矿石选矿技术研究进展

随着硫化铅锌矿资源的日益减少，氧化铅锌矿的高效利用越来越受到关注。为了推动氧化铅锌矿选矿技术的进步，促进氧化铅锌矿的开发与利用，基于该类型矿难选、回收率低的现状，查阅大量相关文献后，综述了我国氧化铅锌矿的研究现状，重点介绍了氧化铅锌矿的浮选工艺、重（磁）-浮联合工艺、选-冶联合工艺。重（磁）-浮联合工艺、选-冶联合工艺对生产条件要求较高，生产成本偏高，不适合大规模工业生产。硫化浮选是工业上应用较多的方法，也是氧化铅锌矿选矿中最有前途的工艺方法。但硫化反应速度慢、硫化物薄膜易疏松脱落以及过量的硫化剂对浮选的抑制等问题急需解决。今后发展路线可以从浮选过程中的硫化转移到磨矿过程中的硫化，或者采用缓释型硫化剂及低溶解度的含硫化合物。

Research Progress of Oxidized Lead-zinc Ore Processing in China

With the decrease of lead-zinc sulfide ore resources， more and more attention has been paid to efficient utilization of oxidized lead-zinc ore. The separation of oxidized lead-zinc ore is difficult and the recovery rate is poor. In order to promote the progress of the process and exploitation utilization technology of oxidized lead-zinc ore， the research status was summarized after referring to a large number of relevant literatures. The flotation process， the gravity（magnetic） separation-floating combined process and the floatation-metallurgy combined process was emphatically introduced. The gravity（magnetic）separation-floating combined process and floating- metallurgy combined process need higher requirements for production conditions， which makes the production cost large and is not suitable for large-scale industrial production. Sulfide flotation is a widely used method in industry and the most promising technology in lead-zinc oxidized ore flotation. However， a lot of problems need to be solved urgently， such as slow reaction rate， easy cast-off sulfide film， inhibition effect of excessive sulfide on flotation and so on. As the developing direction in the future， sulfuration process can be carried out during grinding process instead of flotation process or take the use of slow-release sulfide reagents and sulfur-containing compounds with low solubility.