改善和提高磨矿分级作业中的分级效率是提高磨机处理能力,减少物料过粉碎,节约能耗的重要途径。当前,国内选厂的分级设备,尤其是细粒分级设备的分级效率都比较低,一般为25～40%。目前,绝大多数选厂是采用水力分级设备,其分级过程是按颗粒在介质中的沉 Improving and improving the grading efficiency in grinding and grading operations is an important way to improve the mill’s processing ability, reduce the material’s crushing and save energy. At present, the grading equipment of the domestic processing plants, especially the grading equipment of the fine grading equipment, is relatively low in grade, generally 25-40%. At present, the vast majority of the mill is the use of hydraulic grading equipment, the grading process is by particles in the medium