Abstract
Limitations and anomalies of the classical theories for electric field charging of solid particles using a uni-polar corona are discussed. The well-accepted field charging theory by Pauthenier and Moreau-Hanot (J. Physique Radium 12 (1932) 590) appears to contain a contradiction when dielectric particles are considered, whilst secondly the general assumption that the particles do not rotate during charging due to viscous forces is questioned. Including surface conductivity to the analysis, separating free and bound surface charges, and allowing for a non-uniform distribution of free charges, yields an expression for the electric current on the particle surface. In addition, a rotational particle motion as a result of surface charge distribution is shown to exist, for a typical particle of a few micron suspended in air or flue gas
Published Version
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