New Technology for Separating Resin Powder and Fiberglass Powder from Fiberglass–Resin Powder of Waste Printed Circuit Boards
2014
Li, Jia | Gao, Bei | Hsu, Chen-Min
New recycling technologies have been developed lately to enhance the value of the fiberglass powder–resin powder fraction (FRP) from waste printed circuit boards. The definite aim of the present paper is to present some novel methods that use the image forces for the separation of the resin powder and fiberglass powder generated from FRP during the corona electrostatic separating process. The particle shape charactization and particle trajectory simulation were performed on samples of mixed non-metallic particles. The simulation results pointed out that particles of resin powder and particles of fiberglass powder had different detach trajectories at the conditions of the same size and certain device parameters. An experiment carried out using a corona electrostatic separator validated the possibility of sorting these particles based on the differences in their shape characteristics. The differences in the physical properties of the different types of particles provided the technical basis for the development of electrostatic separation technologies for the recycling industry.
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