— The tribocharging device (Fig. 1) consisted in a cylindrical chamber (diameter: 12 cm; length: 35 cm), made of Polymethyl Methacrylate (PMMA).At its upper end, the chamber is provided. with four co-axial aluminum propellers, driven by a DC electric motor. The speed of the motor was fixed to n = 2500 rpm.This device entrained the granular …
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Analysis of the purity of the products obtained was performed using a new program of image processing in MATLAB. Products of very high purity (over 95% for the PC and almost for PA) were obtained at a recovery rate higher than 70%. ... Vibratory feeder Original Image High voltage supply Tribo-aeroelectrostatic separator aero electrostatic ...
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— Several factors affect the efficiency of the tribo-electrostatic separator which may be broadly classified into three groups [48]: (1) physical properties such as particle size, density, surface ...
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— Benabboun et al. (2014) have used systems based on tribocyclone, fluidized bed and static as tribochargers and high voltage free-fall separator to evaluate the efficiency of separation in mixtures ...
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— The numerical simulation of charged particles trajectories facilitates the interpretation of the experimental results and the analysis of the factors that affect the …
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includes high tension roll, electrostatic plate, electrostatic screen and tribostatic separators. Electrostatic separators are used to separate dry, free fl owing materials with particles sizes between 40 and 800 microns that exhibit electrical conductivity differences. High Tension Roll Separator Features Light weight, thermally stable
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— Tribo-Electrostatic Separation Analysis of a Beneficial Solution in the Recycling of Mixed Poly(Ethylene Terephthalate) and High-Density Polyethylene March 2021 Energies 14(6):1755
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— The focus of this paper is on three electrostatic processes of separation used for processing of different types of mixtures: (i) role-type electrostatic separator, used to sort mixtures ...
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— The two-rotating-disk-type tribo-aéro-electrostatic separator designed by authors and built by the CITF Company, Saint Cybardeaux, France, used in the present study is presented in Fig. 2.A mixture of plastic granules is introduced in a fluidized bed generated inside the separation chamber (160 mm × 160 mm × 240 mm) made of …
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— The paper developed a spiral tube tribo-electrostatic separation devicefor studying the behavior of polymer particles in a free-falling high-voltage electrostatic field. …
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The tribo-aero-electrostatic separator and two free-fall electrostatic separators represent the upper and lower levels of the same installation. 100 80 60 • confl 20 • conf3 40 o 3 4 lompartment (b) Fig. 10. Purity ofHDPEIPVC in the six compartments of the positive high-voltage side collector for the three configurations.
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— DOI: 10.1002/pen.26163 Corpus ID: 252748139; Purity prediction of the two‐stage high voltage electrostatic separation of a mixture of three polymers @article{Tian2022PurityPO, title={Purity prediction of the two‐stage high voltage electrostatic separation of a mixture of three polymers}, author={Chifeng Tian and …
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— As an emerging technology, tribo-electrostatic separation differentiates particles by tribo-charging with subsequent influence of an external electric field, which …
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— The tribo-charged particles are therefore attracted by the opposite polarity electrode and recovered in the collector that is placed under the separation tower. The working principle of this separator is almost similar with the free-fall tribo-electrostatic separator for which the electrodes are of rectangular shape, while. Experimental analysis
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Allcontrols' electrostatic (tribo-electric) polymer separation solutions include: The Hamos EKS electrostatic separator – This can split co-mingled granulated polymers (including black plastics) into very high purity fractions. The different polymer types are charged by impact in the Hamos EKS system. The impact causes one polymer type to lose electrons and the …
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The DC applied voltage maintained in the tribo-electrostatic separator was in the range of 5–25 kV and changed at an increment of 5 kV. The separation studies were also carried out to study the effect of temperature on the separation of the synthetic mixture in the tribo-electrostatic separator.
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— The experimental setup shown in Fig. 1, is constituted of a plastic-belt conveyor of dimensions 1980 × 195 × 2 mm 3, moving at a constant linear speed of 30 cm/s.The electric field is generated by a cylindrical static electrode of 10 cm length and 5 cm diameter connected to a variable DC high-voltage supply (Spellman, 40 kV, 9 mA).
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1162 IEEE TRANSACTIONS ON INDUSTRY APPLICATIONS, VOL. 51, NO. 2, MARCH/APRIL 2015 Fig. 1. Schematic of the double-stage electrostatic separator with a static charger for mixed granular plastics. Fig. 2. Schematic of the static charger. connected to high-voltage supplies of opposite polarities.
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— An optimal voltage of electrodes should be optimized according to the charging efficiency of the particles time after time, as a low voltage may be not enough to attract the charged particles while a high voltage may make the particles impact the electrodes and rebound into the wrong collectors. 3.3.3. Fluidized bed triboelectrostatic …
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It also could be used for grain processing and some part of seed separation. ... XDF-φ250×200 high voltage electrostatic separator 1.Application XDF-φ250×200 High tension electric Separator is mainly used for the separation of Conductor minerals and Non-conductor minerals. It is also used for the classification of the same material instead ...
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— A tribo-aero-electrostatic separator has been recently patented for the selective sorting of granular plastics mixtures generated during the recycling of waste electrical and electronic equipments ...
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— Custom-designed fluidized bed electrostatic separators Dascalescu et al. 2011) and tribo-aero-electrostatic separators could also be employed for the separation of both mm-and sub-mm-size granular ...
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Mineral Processing. Errol G. Kelly, in Encyclopedia of Physical Science and Technology (Third Edition), 2003 III.G.2 Theory of Electrostatic Separation. There are three distinct stages in electrostatic separation processes: particle charging, separation at the grounded surface, and separation caused by the trajectory of the particles. Particle charging can …
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— A tribo-aero-electrostatic separator has been recently patented for the selective sorting of granular plastics mixtures generated during the recycling of waste electrical and electronic equipments (WEEE). The plastics are tribo-charged in a parallelepiped fluidized bed device, two opposite walls of which being the electrodes that …
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The six factors under study are: the high voltage, the rotation speed of the disks, the duration of the tribo-charging process, the duration of the separation, the fluidisation air …
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Descriptive schematic of the role-type electrostatic separator. (1) Corona electrode connected to a direct-current high voltage supply; (2) grounded rotating cylindrical electrode; (3 ...
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— When processing beach sands and similar minerals reserves, the electrostatic separator has the advantage of processing materials in a dry state (unlike froth flotation). In a beach sands processing plant, a …
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This work is aimed the optimization of a new process of electrostatic separation of micronized isolating materials mixtures, with application at the recycling of waste electrical and electronic equipment (WEEE). The two high-voltage rotating-cylinder electrodes of the electrostatic separator are partly immersed in a fluidized bed containing the material to …
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— Wet fractionation, also known as isoelectric point precipitation, is widely used for the separation of plant proteins. This method is effective for obtaining protein isolates …
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— The focus of this paper is on three electrostatic processes of separation used for processing of different types of mixtures: (i) role-type electrostatic separator, used to sort mixtures ...
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— The paper developed a spiral tube tribo-electrostatic separation devicefor studying the behavior of polymer particles in a free-falling high-voltage electrostatic field. ... Finally, high-voltage electrostatic separation simulations and experiments were carried out, achieving separation purities of 92.8% for PA66, 80.7% for PP (modified), and ...
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— The tribo-aero-electrostatic separator achieves the selective sorting of mixed granular insulating materials in a fluidized bed affected by an electric field orthogonally …
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New Vibrating-Table-Type Tribo-Electrostatic Separator for Selective Sorting of Granular Plastic Wastes Abstract: Triboelectrostatic separation has already been proven its …
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— In order to intensify the electrical field, two solutions were tested and validated: (1) add a grounding electrode in the proximity of the high-voltage electrodes; (2) dispose vertically the high ...
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