Recent advances in the intensification of triboelectric separation and its application in resource recovery: A review

Abstract

Triboelectric separation has been widely used as one of the most vital and promising powder processing technologies for resource recovery. Recently, triboelectric separation technology has been developing continuously, and has been widely applied in the fields of coal cleaning, mineral separation and secondary resource recycling (e.g., waste printed circuit boards). In this work, the research progress of triboelectric separation in mineral processing was systematically summarized, including pretreatment of particles, charged process intensification, separation process intensification and its application to coal and mineral separation. Furthermore, effective strategies and new explorations were put forward for the challenges and problems faced by efficient triboelectric separation. This review can provide detailed information for the research status of triboelectric separation for minerals, coal and secondary resources, and offer vital insights for further improvement and development of efficient triboelectric separation technology.