Abstract
In this paper, we present the results of experimental and analytical studies of the separation of a copper and polyvinylchloride (PVC) mixture using an electrostatic separator. The separator consists of a plate electrode and a conductive conveyor belt, and it can be inclined about two axes with respect to the horizontal plane. Copper and PVC particles obtained from chopped waste electric cables were used in this study. Separation tests were performed on a sample containing 50% PVC and 50% copper using this method. Prior to separation, the mixture is triboelectrically charged. The principle behind the separation technique is based on the difference in Coulomb force acting on the copper and PVC particles. It was found that the separation efficiency depends on parameters such as the triboelectric charging time and the slope of the conveyor belt. It was possible to obtain high purities and recovery rates of copper and PVC.
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