北方铜业铜矿峪选矿厂设计的磨矿分级系统,其生产能力为600万t/a,原矿硬度HV13～14,采用一段闭路,配置3台MQY5.03×8.5型溢流型球磨机和3台7-?660型水力旋流器,球磨机入磨粒度为-10 mm占92%,旋流器溢流浓度为36%,细度为-0.074 mm占为68%～70%。该系统自投产以来各项生产指标均符合要求,运行状态良好,但球磨机衬板在使用6个月后出现了 North Copper Tongyuku ore dressing plant designed grading system, the production capacity of 6 million t / a, hardness of HV13 ~ 14, using a closed circuit, equipped with three MQY5.03 × 8.5 overflow ball mill and 3 7- 7- 660 hydrocyclone, ball mill particle size of -10 mm accounted for 92%, cyclone overflow concentration of 36%, fineness of -0.074 mm accounted for 68% to 70%. The system has been put into production since the production targets are in line with the requirements of running in good condition, but the ball mill liner in use after 6 months