Add to ORKGAbstract: Due to presence of a great inter particles forces in cohesive powders, great difficulties present in its fluidization, flow ability and discharging. Several attempts were made to overcome these difficulties as mechanical vibration; fast gas fluidization…etc. In this study a new flow enhancement system is suggested for cohesive powders discharging, Without aeration, as aeration leads to some problems as dust generation and some cohesive and nano powders are very sensitive to air. In this system, small permanentmagnets are placed in the discharge zone of a hopper, and then an oscillating magnetic field is applied to excite these magnets. A base of a screen shape is in the exit to keep the magnets within the hopper. The magnetic mass...