立式搅拌磨机对鳞片石墨的磨矿研究

Grinding of Flake Graphite with Vertical Agitating Mill

采用立式搅拌磨机对鳞片石墨进行了磨矿研究,得出最佳条件为:采用Φ6 mm纳米陶瓷球为磨矿介质,磨机转速100r/min,磨矿时间4 min,磨矿浓度30%。按此条件下进行4段再磨、4次浮选的闭路试验流程,可获得石墨品位为92.58%、回收率为94.71%、精矿中+0.15 mm粒级含量为56.12%的良好指标。

Vertical agitating mill was employed to study the grinding performance of flake graphite, and therewith, mill speed, grinding time and grinding density were optimized as 100 r/min, 4 rain and 30%, respectively, while O6 mm nanostructured ceramic ball was chosen as the grinding medium. Under the above optimal conditions, a flowsheet consisting of four-stage regrinding and four-stage flotation resulted in a concentrate with 92.58% at 94.71% recovery and 56.12% in ＋0.15 mm fraction. closed-circuit graphite grade