Optimization of Electrostatic Separation Processes Using Response Surface Modeling

Dăscălescu, Lucian; Tilmatine, Amar; Aman, F.; Mihailescu, M.

doi:10.1109/tia.2003.821812

Cited by 85 publications

(12 citation statements)

References 9 publications

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“…Extensive laboratory and pilot‐plant experimentation is needed for the development of new electrostatic separation applications. The efficiency of the separation process depends on the characteristics of the granular mixtures to be sorted, the feed rate, and the configuration of the electrode (Dascalescu, Tilmatine, Aman, & Mihailescu, ).…”

Section: Introductionmentioning

confidence: 99%

A roll‐type corona discharge–electrostatic separator for separating wheat grain and straw particles

Jafari

Chegini

Akmal

et al. 2019

J Food Process Engineering

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Different methods such as mechanical, pneumatic, and electrical techniques have been used in the separation process of impurities from agricultural products. In electrical systems, three methods, that is, triboelectrostatic, free fall, and roll type with high‐voltage corona discharge electrodes, are usually used. In the present study, separation trajectory of grain and wheat straw are firstly predicted using simulation of roll‐type corona system configuration in COMSOL Multiphysics and MATLAB. Experimental tests are conducted to determine the separation performance of a roll‐type corona apparatus with 10, 15, 20, 25, and 30 kV voltages at 50, 70, and 90 rpm drum rotational speeds. The simulation results showed that the trajectory of the grain particles deviated from that of straw when the voltage increased from 10 to 30 kV as well as increasing the rotational speed from 50 to 90 rpm. Although the rotational speed of 70 rpm resulted in a good separation of grains from straw particles, increasing the speed to 90 rpm not only did not improve the separation performance but also caused a dispersal of the particles and reduced the separation quality. The simulation results were in good accordance with the experimental results obtained from the developed prototype. Practical applications The results of this study can be used in configuration optimization design of “Corona Type Cylindrical Electrostatic Separation” for separating seed and straw in agriculture production, especially where they cannot be separated by conventional methods.

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Section: Introductionmentioning

confidence: 99%

A roll‐type corona discharge–electrostatic separator for separating wheat grain and straw particles

Jafari

Chegini

Akmal

et al. 2019

J Food Process Engineering

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“…The High-Intensity Electric Fields Laboratory at the Technical University of Cluj-Napoca developed two roll-type laboratory separators: ILES-1 and ELSEP [11,12]. The electrostatic separator ELSEP has been specifically designed for performing a wide range of research activities: (i) electric field and corona discharge studies [12][13][14][15]; (ii) particle charging and trajectory control experiments [16][17][18]; (iii) electrostatic separation feasibility tests for brass [19], iron ore [20], and metal-plastic [21]; (iv) training of undergraduate and graduate students, professional engineers and scientists in the field of electrostatics [22][23][24][25].…”

Section: Introductionmentioning

confidence: 99%

Electric and electronic equipment of a research-oriented electrostatic separator

Butunoi

Gagiu

Bilici

et al. 2010

2010 12th International Conference on Optimization of Electrical and Electronic Equipment

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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.Index Terms -Electrostatic separator, electric field, high voltage equipment, electric diagram.I.

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“…The main obstacle against the industry application of such technics is represented by the fact that the performance of most electrostatic separation processes is usually expressed by two or more output variables [4]. For instance, the separation of copper from electric wire and cable wastes is satisfactory when the mass of the middling product is small and the grade of both metal and insulating products is high [5].…”

Section: Introductionmentioning

confidence: 99%

Multivariate Statistical Process Control of Electrostatic Separation Processes

Senouci

Bendaoud

Tilmatine

et al. 2007

2007 IEEE Industry Applications Annual Meeting

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Multivariate control charts are commonly used for monitoring processes the quality of which is determined by two or more correlated output variables. The aim of this paper is to point out the effectiveness of multicriterion control charts for supervising the variability of the outcome of an electrostatic separation process. The experiments were carried out on samples of chopped electric cable wastes, similar to those currently processed by the recycling industry. The two output variables considered in the study were the masses of product recovered in the middling and conductive compartments of the collector. When the separation process was under control, the two variables were correlated, and T2-type control charts could be established. Two out-of-control situations were simulated. The multivariable control charts monitoring the process location and spread were able to detect these situations, though each output variable taken independently remained within the control limits.

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Optimization of Electrostatic Separation Processes Using Response Surface Modeling

Cited by 85 publications

References 9 publications

A roll‐type corona discharge–electrostatic separator for separating wheat grain and straw particles

A roll‐type corona discharge–electrostatic separator for separating wheat grain and straw particles

Electric and electronic equipment of a research-oriented electrostatic separator

Multivariate Statistical Process Control of Electrostatic Separation Processes

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