Model Experimental Study on Pre-dispersed Blanking Maldistribution of Flash Furnace
River sand and concentrate powder were selected to model blanking for pre-dispersed part of flash furnace on a model rig.The qualitative maldistribution degree was analyzed by using high-speed camera to shoot the particle flow in the feed tube and distributor channel.The quantitative maldistribution degree was analyzed by processing screened and weighted data.The experimental results indicate that there are many particles in the angle of slip tube and distributor channel and there are few particles near circular peripheral area of the distributor channel.There is an obvious axial maldistribution and local maldistribution.Circumferential maldistribution exists because the particles collide with channel separator vertically.With the increased feed capacity,circumferential maldistribution and local maldistribution increase and axial maldistribution change is not obvious.