Recovery of waste printed circuit boards through pyrometallurgical processing: A review

•A variety of pyrometallurgical recycling methods are discussed in this paper.•Special emphasis is given on avoid the generation of dioxins in recycling WPCBs.•The pretreatment process can improve the recovery efficiency.•Control the production of pollutants are the focus of future research.•Recycling of resin in WPCBs can be solved by pyrolysis method.