Published date: Dec 31 2020

Journal Title: KnE Materials Science

Issue title: IV Congress “Fundamental Research and Applied Developing of Recycling and Utilization Processes of Technogenic Formations” Volume 2020

Pages: 156–162

DOI: 10.18502/kms.v6i1.8061

V.M. Alexeenkoandzh@oit.hcei.tsc.ruInstitute of High Current Electronics, Tomsk, Russia

L.G. Ananieva Tomsk Polytechnic University, Tomsk, Russia

A.A. ZherlitsynInstitute of High Current Electronics, Tomsk, Russia

S.S. KondratievInstitute of High Current Electronics, Tomsk, Russia

M.V. KorovkinTomsk Polytechnic University, Tomsk, Russia

O.V. SavinovaTomsk Polytechnic University, Tomsk, Russia

The results of the electric discharge crushing of PCB (printed circuit boards) to millimeter-sized fractions suitable for separation of the metal from the dielectric are presented. The crushing was performed on a high-voltage repetitively pulsed generator with varying the number of pulses. It was determined the dependences of the fractional composition of crushing products on the number of pulses in the cycle. Crushing products were studied for definition separation of metal from the dielectric with optical microscope. The results of the work confirm the possibility of electric discharge crushing various types of PCB, including fiberglass PCB with four layers.

Keywords: high voltage fragmentation, waste printed circuit board, recycling

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