Numerical simulation and experiment studies have been conducted to investigate the effect of inclusions separation under combined magnetic field (CMF) generated by synchronous application of a rotating magnetic field (RMF) and a downward traveling magnetic field (TMF). The experimental setup is constituted by two sets of equidistant coils systems fed by out-of-phase alternating currents. The electromagnetic force field and flow field were calculated via finite-element analysis. CMF combines the rotational effect of RMF and the transport effect of TMF. Volume fraction and particle trajectories were simulated to examine the mechanism of particle separating. Good agreement between experimental and numerical results has been achieved. The flow field and the Archimedes electromagnetic force are the two main factors responsible for particle motion. This type of CMF provides a highly efficient approach at eliminating inclusions.