Lead and zinc ore beneficiation process

Generally it adopts one closed-circuit three process crushing, two closed-circuits two process grinding, one rough crushing three fine grinding three scavenging lead flotation process，one rough crushing three fine grinding three scavenging zinc flotation process.
The detailed process is as follows: the raw material is send to the rough crusher by the vibrating feeder, then to the fine crusher. After that, the raw material comes to screen, at this process, the material on the screen(big granules) will go back to the fine crusher for a second crushing. And the material below the screen is acceptable product which can be transferred to the fine ore bin. Under the bin there should be a feeder, the fine ore is send to the first stage ball mill by the belt conveyor, further to the second stage ball mill. Then the material comes to the first stage hydrocyclones. The setting material in the hydrocyclones goes back to the second stage mill for a further grinding. The material in the first hydrocyclone overflows to the second stage hydrocyclone. The setting material in the second stage hydrocyclone goes back to the third stage mill for a further grinding. Then material in the third stage mill is sent again to the second stage hydrocyclone and overflows to two agitators. After adding chemicals to the agitators, it comes to the one rough crushing three fine grinding three scavenging lead flotation process. At this time, the tailing and scavenger concentrate failings go back to the former stage. The lead concentrate is separated out in the third beneficiation process, and is sent to the setting pond. The tailings of lead flotation come to the agitators. By adding chemicals again to the agitators, it comes to another process of zinc flotation. At this time, the tailings and scavenger concentrate tailings go back to the former stage. The zinc concentrate is separated out in the third beneficiation process, and is sent to the setting pond. Tailing of zinc flotation is the final tailing which is sent to the tailing yard after concentration. The water from concentration and filteration can be reused.