Pneumatic separation of Sn-enriched and Ti-enriched electronic components of waste printed circuit boards

E-waste recovery caused serious pollution in China. Environment-friendly technologies are the pressing demands for Chinese to dispose e-waste. Waste printed circuit board, which is a typical e-waste, needs to be properly treated. Many works related to dispose the basal boards. Littler information was about the dispose technology of electronic components. In this study, due to contain different metals, electronic components were classified as Ti-enriched components (diodes: 156.31 mg/kg; audions: 205.66 mg/kg) and Sn-enriched components (CD capacitances: 172.35 mg/kg; electrical resistances: 204.67 mg/kg; CBB capacitances: 523.94 mg/1