Journal of the Society of Powder Technology, Japan
Online ISSN : 1883-7239
Print ISSN : 0386-6157
ISSN-L : 0386-6157
Original Paper
Evaluation of Flowability of Wet Granular Materials by Stirring Torque: Effects of Additive Liquid Viscosity on Flowability
Yasushi MinoMaruya NiikuraKoichi NakasoKuniaki Gotoh
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2021 Volume 58 Issue 5 Pages 234-237


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.

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