攪拌トルク測定による湿潤粉粒体の流動性評価：添加液体の粘度が流動性におよぼす影響

Flowability of powder and granular materials is an important property to design and control the manufacturing process. A simple and low-cost technique was developed to evaluate the flowability of wet powder and granulate materials. In the proposed technique, the flowability can be evaluated by the torque for stirring wet powder with a pitched-blade paddle. In order to confirm the performance of our technique, the torques to stir the wet beads with varying moisture contents were measured. The effects of additive liquid viscosity on the torque for stirring were investigated, and the correlation between the moisture content corresponding to maximum steady torque for stirring and the additive liquid viscosity was presented.