The Effect of the Mechanical Properties of Powder on the Characteristics of Dense Phase Horizontal Conveyance of Powder

The characteristics of the horizontal conveyance of dense phase flow of powder was experimentally investigated by using a progressive cavity pump. The results show that the pressure drop depends on the dynamic friction coefficient of powder, that is dynamic wall friction coefficient or dynamic internal friction coefficient. At the same time, the friction factor also depends on the dynamic friction coefficient.Next, the correlation between the friction factor and the dynamic friction coefficient of powder was discussed. The pressure drop and the friction factor were affected by a flow pattern of the powder. These should be estimated by the dynamic internal friction coefficient for plug flow, but in the other cases, these are estimated by the dynamic wall friction coefficient.