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Article Dans Une Revue International Journal of Electronics and Electrical Engineering Systems Année : 2020

Influence of Particle Size after Grinding in Electrostatic Separation of Granular Plastic Mixtures

A Benabderrahmane
  • Fonction : Auteur
Thami Zeghloul
Lucien Dascalescu

Résumé

Triboelectrostatic separation is a technology which allows the separation of polymer materials based on their surface charging characteristics. As plastic waste is collected in various large sizes, it is necessary to control the particle size using crushing and shredding units to bring the particles into a proper size before they are subjected to electrostatic separation. The present paper aims to examine the effect of grinding and size reduction on triboelectric charge accumulation and electrostatic separation efficiency. The study was performed on typical pieces of PC-ABS and HIPS originating from waste electric and electronic equipment (WEEE), experiments start by feeding equal quantities of plastic pieces into the grinder. The rotary cutters of the grinder stir the plastic pieces, a charge transfer occur between the plastic particles by repeated rubbing against each other. After a certain time a granular mixture was recovered from the grinder and immediately introduced in a roll type triboelectrostatic separator. The charge of the selectively sorted products was measured using a Faraday cage connected to an electrometer. Four screen mesh diameters were compared (2 mm, 3 mm, 5 mm and 7 mm). It was found that particle size is definitively an important factor influencing the outcome of the triboelectrostatic separation; fine grinding is not favorable, it requires grinding for extended periods and favors the formation of particle agglomeration, high separation efficiency was obtained for relatively coarse particles
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Dates et versions

hal-04441759 , version 1 (08-02-2024)

Identifiants

  • HAL Id : hal-04441759 , version 1

Citer

Karim Medles, A Benabderrahmane, Thami Zeghloul, Lucien Dascalescu. Influence of Particle Size after Grinding in Electrostatic Separation of Granular Plastic Mixtures. International Journal of Electronics and Electrical Engineering Systems, 2020, 3 (4), https://ijeees.com/wp-content/uploads/2021/03/ID61.pdf. ⟨hal-04441759⟩
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