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Actuators 2018, 7(2), 18;

Vibration-Assisted Handling of Dry Fine Powders

Chair of Dynamics and Mechatronics, Paderborn University, Warburger Straße 100, 33100 Paderborn, Germany
ATHENA Technologie Beratung GmbH, Technologiepark 13, 33100 Paderborn, Germany
Author to whom correspondence should be addressed.
Received: 23 February 2018 / Revised: 23 March 2018 / Accepted: 31 March 2018 / Published: 10 April 2018
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Since fine powders tend strongly to adhesion and agglomeration, their processing with conventional methods is difficult or impossible. Typically, in order to enable the handling of fine powders, chemicals are added to increase the flowability and reduce adhesion. This contribution shows that instead of additives also vibrations can be used to increase the flowability, to reduce adhesion and cohesion, and thus to enable or improve processes such as precision dosing, mixing, and transport of very fine powders. The methods for manipulating powder properties are described in detail and prototypes for experimental studies are presented. It is shown that the handling of fine powders can be improved by using low-frequency, high-frequency or a combination of low- and high-frequency vibration. View Full-Text
Keywords: powder handling; flowability; dosing; transport; mixing; dispersion; piezoelectric actuators; vibrations powder handling; flowability; dosing; transport; mixing; dispersion; piezoelectric actuators; vibrations

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This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited (CC BY 4.0).

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Dunst, P.; Bornmann, P.; Hemsel, T.; Sextro, W. Vibration-Assisted Handling of Dry Fine Powders. Actuators 2018, 7, 18.

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