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Article type: Research Article
Authors: Ouili, Mehdia; | Mehasni, Rabiaa | Feliachi, Mouloudb | Belounis, Abdallaha | Latreche, Mohamed El Hadia
Affiliations: [a] Laboratoire d’Electrotechnique (LEC), Université des frères Mentouri Constantine 1, Constantine, Algérie | [b] Laboratoire IREENA-IUT, CRTT, Saint Nazaire, France
Correspondence: [*] Corresponding author: Mehdi Ouili, Laboratoire d’électrotechnique de Constantine (LEC), Université des frères Mentouri Constantine 1, Route Ain Elbey, Constantine 25000, Algérie. Tel./Fax: +213 31 81 90 13; E-mail: mehdi.ouili@lec-umc.org
Abstract: The aim of this work is the investigation of the simultaneous separation of magnetic (𝜇r > 80) and conductive (𝜎 ≈ 6 ×107 S/m) particles in a designed magnetic separator. Such a separator consists mainly of a drum on which permanent magnets are arranged and a conveyor belt carrying the material to be purified. The separately driving of the drum and the conveyor belt allows the independent control of the frequency of the generated magnetic field and the displacement speed of the material to be treated. To generate high magnetic field, identical NdFeB permanent magnet bars with residual magnetic flux density Br = 1.2 T are used. To compute the particles trajectories, the magnetic field and the particle dynamic governing equations have been solved using the numerical finite element (FEM) and Runge Kutta (RK4) methods. The computing results have shown that the proposed separator permits the simultaneous separation of magnetic and conductive particles. To check the validity of the numerical results, experiments have been carried out on ferromagnetic powder and conductive particles of different sizes.
Keywords: Magnetic separation, drum, particle trajectories, finite element, permanent magnets
DOI: 10.3233/JAE-180101
Journal: International Journal of Applied Electromagnetics and Mechanics, vol. 61, no. 1, pp. 137-155, 2019
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