Table of Contents
Magnetic and Electrical Separation
Volume 8, Issue 2, Pages 101-113

Charging Mechanisms for Particles Prior to Electrostatic Separation

University of Birmingham, School of Chemical Engineering, Edgbaston, Birmingham B15 2TT, UK

Received 14 May 1996; Accepted 8 July 1996

Copyright © 1997 Hindawi Publishing Corporation. 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.


The four principal methods available for charging particles prior to electrostatic separation are by grinding, triboelectrification, corona charging and charging by induction. Each of these mechanisms gives rise to surface charge and are discussed in this paper. Each is a distinct mechanism but in most practical separation processes two or more will occur.