THE VIBRATORY PACKING OF POWDERS

The objective, in packing particles by vibration, is to increase the density of packing. The main factors affecting the packing of particles in this way are the characteristics of the powder (size distribution, shape, surface condition) and the vibration variables (frequency, amplitude, time). Other factors include segregation by size and shape and also, for a multicomponent powder, by particle density. The wall effect of the container might also be expected to influence the packing in its vicinity. An experimental investigation of some of these variables is here reported.