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铜矿峪选矿三期技改工程中，安装了32台XJC-80型外充气浮选机。此种型号浮选机是我国70年代中期研制的，其搅拌系统结构见图1。此设备在1993年投产后的生产实践中暴露出如下问题：①效率低，选矿指标达不到设计要求；②能耗大，电机过负荷严重；③叶轮和定子设计不合理，矿浆表
Copper Mine Valley dressing three technical renovation project, installed 32 XJC-80-type inflatable flotation machine. This type of flotation machine was developed in mid-1970s in our country, the mixing system structure shown in Figure 1. The production of this equipment after its put into operation in 1993 revealed the following problems: ① low efficiency, ore dressing targets fail to meet design requirements; ② large energy consumption, serious motor overload; ③ impeller and stator design is not reasonable, pulp table