[IEEE 2017 18th International Symposium on Electromagnetic Fields in Mechatronics, Electrical and Electronic Engineering (ISEF) - Lodz (2017.9.14-2017.9.16)] 2017 18th International Symposium on Electromagnetic Fields in Mechatronics, Electrical and Electronic Engineering (ISEF) Book of Abstracts - N-body simulation of electrically charged plastic particles motion in free-fall electrostatic separator