Journal
JOURNAL OF MATERIAL CYCLES AND WASTE MANAGEMENT
Volume 24, Issue 2, Pages 633-641Publisher
SPRINGER
DOI: 10.1007/s10163-021-01346-w
Keywords
Plate-type electrostatic separator; Plate; screen-type electrostatic separator; Configuration comparison; Coaxial cables; Recycling
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Funding
- CNPq (National Council of Science and Technological Development)
- CAPES (Brazilian Agency for Improvement of Graduate Personnel)
- FAPERGS (Research Support Foundation of the State of Rio Grande do Sul)
- SDECT (Secretary of Economic Development, Science and Technology of the State of Rio Grande do Sul)
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This study examines the recycling of coaxial cables using less common configurations of electrostatic separators. The performance of each separator was evaluated based on important parameters, and the results showed that the plate-type separator was better suited for material recovery from coaxial cables. This study contributes to understanding these configurations and their potential use in other types of waste.
Technological development has led to a growing generation of waste electrical and electronic equipment, including cables. This work concerns the recycling of coaxial cables using two less common configurations of electrostatic separators. At first, the cables were comminuted and sieved. Then, they were subjected to electrostatic separation on the plate-type and the screen-type electrostatic separators. The performance of each separator was evaluated according to important parameters, including high voltage, plate angle, and splitter angle. In the sieving step, purity of 99.21% and recovery efficiency of 93.67% for aluminium were achieved. In regards to the electrostatic separation, for plate-type, the best parameters were a high voltage of 30 kV, a plate angle of 50 degrees, and a splitter angle of - 7.5 degrees, achieving purity of 90.86% and recovery efficiency of 88.65% for copper-clad steel. For screen-type, the best parameters were a high voltage of 30 kV, and a plate angle of 70o, attaining purity of 87.27%, and recovery efficiency of 79.86% for copper-clad steel. The results showed that the plate-type was better suited for the recovery of materials from coaxial cables, contributing to increasing the information available about these configurations and helping in the use of these separators on other types of waste.
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