Abstract
The flow properties due to Jenike have been determined for several limestones powders of various particle size distributions. For cohesive powders, higher values for the unconfined yield strength, the effective angle of friction and the bulk porosity are attained than for free flowing powders. The particle size distributions by volume have been characterised by the average particle size, the variation coefficient and the skewness. Narrow particle size distributions were investigated in order to see the influence of the average particle size. Wide particle size distributions were studied to see the influence of the variation coefficient. The average particle size and the variation coefficient are suitable in making predictions of flowability.
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