zn pb machinesweden ball mill
Late 1992: Installation of Ball Mill 1 and Ball Mill 2, which increased throughput. : Installation of additional Pb and Zn columns, which improved Pb and Zn recoveries. 1997: Commissioning of Production Rate Increase, PRI, including SAG Mill 3, Ball Mill 4, some Zn flotation capacity, new reagent building, and the gyratory crusher The feed grade of dry ore is %Pb and %Zn.