Abdelber Bendaoud

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Identification of the optimal operating conditions and evaluation of their robustness are critical issues for the industrial application of electrostatic separation techniques. In spite of extensive investigations performed in recent years, no standard procedure is available for guiding the research of the set point and for minimizing the process(More)
The dual corona-electrostatic electrodes consist of one or several ionizing elements (wires, needles, and blades) attached to a metallic support. This paper analyzes the characteristic features of a particular type of such electrodes and formulates recommendations on their design and utilization. The experiments focused on several models of dual(More)
Tribocharged mixed granular materials are commonly separated in the electrostatic field generated between two vertical plate electrodes. However, the existing technologies are not appropriate in sorting coarse granules (size > 2 mm) in which the effect of gravity is stronger than the Coulomb forces. The aim of the experiments reported in this paper is to(More)
Parallel wire-plate electrode arrangements are widely used to generate corona discharges in various electrostatic processes. The present paper analyzes the characteristic features of a slightly-modified such electrode configuration. In all the experiments, a stainless steel wire, diameter 0.18 mm or 0.57 mm was employed as corona electrode, energized from a(More)
The triode electrode system is frequently employed for accurately controlling the corona charging of insulating materials. The primarily aim of this paper is to characterize this electrode system by current-voltage and current density distribution measurements. The electrostatic aspect of the electric field generated by the triode electrode system is also(More)
Identification of the optimal operating conditions and evaluation of their sensibility to changes in certain critical factors are critical issues for the industrial application of electrostatic separation techniques. The authors have already elaborated a procedure for set-point identification and robustness testing of a roll-type corona-electrostatic(More)
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(More)
The dual corona electrode consists in one or several ionizing elements (wires, needles, blades) attached to a metallic support. The present paper aimed at analyzing the characteristic features of a particular type of corona electrodes, and formulate some recommendations on their design and utilisation. The experiments focused on several models of dual(More)
The variability of the outcome is often deplored by the users of electrostatic separation equipment. This paper is written with the aim of showing how statistical process control methods could contribute to the improvement of users' overall satisfaction. In order to validate a procedure for evaluating the short and long term capability of the electrostatic(More)
Triboelectrostatic separation of millimeter-size particles is a well-known process, which is widely used in the recycling industry. However, when processing fine particles with an average diameter of 0.1 mm or less, this technique is still inefficient. The aim of this paper is the experimental investigation of a patent-pending triboelectrostatic separation(More)