许多矿物都可用静电分选。因为电选时电力与颗粒面积成正比，在空气中的拖曳力比在水中的要小得多，故可以预料，特别在细粒方面电选具有广阔的前景。所以电选可处理如炉尘，煤灰那样的废料或渣料。研究表明，很细矿物混合物（如石英／石灰石）在粉尘给料器中摩擦荷电后，在强电场中可以分离。 Many minerals are available electrostatic separation. Because electric power is proportional to the area of ​​the particles and the drag force in the air is much smaller than in the water, it can be expected that the electric selection, especially in fines, has a broad prospect. Therefore, the electric power can be handled, such as dust, coal ash that waste or slag. Studies have shown that very fine mineral mixes, such as quartz / limestone, can be separated in a strong electric field after frictional charging in a dust applicator.