Electrostatic Technologies for the Recycling Of Non-Ferrous Metals And Plastics From Wastes

摘要

Electrostatic separation is extensively used for the selective sorting of granular mixtures, by means of the electric forces, which act on charged or polarized bodies. The roll-type separator with combined corona-electrostatic field has been proved to be the most advantageous solution when the purpose is to isolate conductive particles form non-conductive ones. The paper presents the contributions of the High Intensity Electric Fields Laboratory of the Technical University of Cluj-Napoca to the development of this technique for various applications in the recycling industry. A multitude of factors influence the efficiency of the separation process and the authors show how the results of numerical modeling guided the design of new installations and the optimization of their operating conditions. Laboratory and pilot plant brought evidence of the effectiveness of the proposed technlogy.