Numerical computation of conducting particle trajectories in plate-type electrostatic separators

Development of new applications of plate-type electrostatic separators ask for increased controllability of particle trajectories. The aim of the paper is to model the particle behaviour after lift-off from the plate electrode. A superficial charge simulation program was employed for the computation of the electric field in the active zone of the separator. This enabled the evaluation of the charge acquired by a conducting particle in contact with the plate electrode and the electric force exerted on it before and after detachment. Based on a previously-derived mathematical model, the particle trajectories were calculated for various electrode configurations. The data of such numerical simulations can guide the experimental studies needed for the assessment of new industry applications of electrostatic sorting or classifying techniques.