Ultrasound-assisted microfeeding of fine powders--颗粒学报PARTICUOLOGY

Lu, X., Yang, S., & Evans, J. R. G. (2008). Ultrasound-assisted microfeeding of fine powders. Selected papers from 1st UK-China Particle Technology Forum, 6(1), 2–8. https://doi.org/10.1016/j.cpart.2007.10.007

Ultrasound-assisted microfeeding of fine powders

Xuesong Lu, Shoufeng Yang, Julian R.G. Evans ^*

Department of Materials, Queen Mary, University of London, Mile End Road, London E1 4NS, UK

10.1016/j.cpart.2007.10.007

Volume 6, Issue 1, February 2008, Pages 2-8

Received 31 May 2007, Accepted 10 October 2007, Available online 7 March 2008.

E-mail: j.r.g.evans@qmul.ac.uk

Highlights

Abstract

Ultrasonic microfeeding of powders is a new and promising method for use in solid freeforming and pharmaceutical dosing. In this work, computer-controlled microfeeding systems using ultrasonic vibration of a capillary were built. A wide range of controlled, stable rates of flow and switching control were achieved in the acoustic vibration system and uniform powder doses were obtained in the ultrasonic system. Experimental results show that nozzle diameter, transmission fluid depth, waveform, voltage amplitude, frequency and oscillation duration all influence the dose mass. Among these factors, nozzle diameter, voltage amplitude and oscillation duration can be best used to control the dose mass. An artificial neural network (ANN) technique was applied to predict the dose mass. Based on these research results, four types of microfeeding were proposed.

Graphical abstract

Keywords

Microfeeding; UltrasoundFine; powders

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