已经断定两段分级比单段分级有许多优点,这些优点中是: 有比较好的粒度分离精度(sharpness); 磨矿的动力消耗较少; 细粒产品中的粒度分布较狭窄; 极细粒部份(矿泥)的比例较少; 减少细粒产品的比表面积; 在下一步的加工阶段中改善了浮选速率; 有价矿物有较好的回收率和品位。 It has been concluded that two stages have many advantages over single stage, among which are better sharpness, less power consumption in grinding, narrower particle size distribution in fines, finer grains The proportion of the part (slime) is less, the specific surface area of ​​the fines product is reduced, the flotation rate is improved in the processing stage of the next step, and the valuable minerals have better recovery rate and grade.