Publications (2)0 Total impact
Conference Proceeding: Electric and electronic equipment of a research-oriented electrostatic separator[show abstract] [hide abstract]
ABSTRACT: The present work was aimed for updating (optimizing) the design of the research-oriented roll-type electrostatic separator ELSEP. The new equipment has several distinctive features: (i) large variety of corona and electrostatic electrodes; (ii) reversible 100 kV, 3 mA DC high-voltage supply; (iii) variable-speed roll drive with induction motor and frequency convertor; (iv) ergonomic control panel. They enable the optimization of the electrostatic separation processes by the accurate measurement and control of the operating conditions. The typical applications of ELSEP are: (i) electric field and corona discharge studies; (ii) particle charging and trajectory control experiments; (iii) electrostatic separation feasibility tests; (iv) training of undergraduate and graduate students, professional engineers and scientists in the field of electrostatics. The technical information given in this paper is expected to be of help to other researchers in building similar laboratory equipment.Optimization of Electrical and Electronic Equipment (OPTIM), 2010 12th International Conference on; 06/2010
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ABSTRACT: The paper aims at demonstrating the feasibility of cleaning and sorting of wheat seeds in the corona field of roll- type and free fall separators. An extended corona discharge field was generated by three dual wire type electrodes in the roll-type separator and by a frame type corona electrode with nine hori- zontal emissive wires, in the free-fall separator. The separation feaseability was studied on samples of wheat, broken wheat, shrivelled wheat, barley, oat, wild oat (Avena fatua), and corn- cockle (Agrostemma githago) and on binary mixtures with equal number of seeds. The experiments show the possibility to clean the wheat seeds from oat, wild oat and corncokle. The sorting of a ternary mixture of wheat, broken and shrivelled wheat in or- der to increase germination presented better results on the roll- type separator. The sorting of a 600 grams conditioned wheat allowed to increase the thousand-seeds weight from 49.5 grams to 53.5 grams, at 42.6% mass recovery on the roll type corona separator.
Universitatea Tehnica Cluj-NapocaKlausenburg, Cluj, Romania