Mixing of particles and powders: Where next?--颗粒学报PARTICUOLOGY

a University of Cambridge, Department of Chemical Engineering and Biotechnology, Cambridge CB2 3RA, UK
b Laboratory for Simulation and Modeling of Particulate Systems, School of Materials Science and Engineering, University of New South Wales, Sydney, NSW 2052, Australia

10.1016/j.partic.2010.07.001

Volume 8, Issue 6, December 2010, Pages 563-567

Received 21 April 2010, Accepted 15 June 2010, Available online 21 September 2010.

E-mail: jb231@cam.ac.uk

Highlights

Abstract

Industrial mixers for powders and granular materials operate with no effective control of mixture quality and lack scientific design. The last twenty years have seen growth in understanding of mixing and mixers. However, research falls far short of what is needed for on-line characterisation of mixture quality. Secondly, although theoretical descriptions of a few mixer types have been reported, these fall far short of what is needed for equipment design. Two thrusts could revolutionise this situation. One is a scientific characterisation of mixer structure applicable to industrial scale as well as laboratory scale equipment; this is now within our grasp using digital imaging. The other is the development of ideas to overcome the restricted number of particles that can be used in the Distinct Element Method (DEM) for mixers. The goal should be to take the designer through a sequence of steps to the most appropriate mixer size, configuration and operating conditions for a given process duty.

Graphical abstract

Keywords

Design; Granular materials; Mixing; Mixers; Powders; Quality characterisation; Quality measurement

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