Abstract: To improve the comprehensive utilization of fly ash,the fly ash separation experiment was conducted on a conductive induction charging test bed in this paper.By changing the parameters of the plate type,the plate voltage,the plates spacing and the particle size,as well as the factors of sorting effect were studied,and comparative analysis of sorting products were carried out.Results show that the separation performance of the concave electrode plate is better than the convex electrode plate. With the increase of voltage,the ignition loss of fine ash shows an ascending tendency and decreases afterwards.The smaller particle size possesses lower loss on ignition and leads to difficult in sorting.The increase of plate spacing will weaken the strength of the electric field and affect the movement of particles.The effect of separation is ideal to coarse ash with particle size >48 μm,but it is relative poor to fine ash.After sorting,the maximum ash loss is 21. 89%and the recovery rate of carbon can reach 53. 02%.