摘要:
本研究采用摩擦电选法回收废弃线路板中的有机组分,主要探究了废弃线路板非金属组分的摩擦荷电特性,以及在最优分选参数条件下进行静电分选的效果.不同组分荷质比的测量结果显示,PMMA作为摩擦材料使废弃线路板非金属组分中的有机物与无机物荷电性质相反,荷质比差异较大,说明PMMA作为摩擦材料时废弃线路板非金属组分中的有机物与无机物可实现摩擦静电分选.分选结果表明靠近两极位置的收集槽中产品的产率较高,分别为27.22%和51.71%,靠近正极收集槽中产物有机组分的烧失量达到了81.42%.该研究证明了摩擦电选回收废弃线路板中有机组分的可行性,为废弃线路板有价组分的回收和再利用提供了一种有效的途径.
Abstract:
In this study,triboelectric separation was adopted to recycle the organic components from the waste printed circuit boards (WPCB),and measured the electrical properties of nonmetallic ingredient in WPCB and the separation results under optimal conditions were given.The results of Charge-mass ratio showed that organic components and fiberglass in WPCB charged the opposite charge and the biggest difference by using PMMA charger,which stated organic and inorganic in non-metallic components from WPCB will be separated by friction electrostatic separation.The separation results showed that the yield of production was mainly focused on the slots next to plates,the yield next to negative and positive plate was 27.22% and 51.71%,respectively and the ignition loss of production in slot next to positive plate reached to 81.42%.The study proved the feasibility of recycling the organic constituents from waste printed circuit board by using electrostatic separation and supplied an effective way to recycle and reuse the valuable compositions from waste printed circuit boards.
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