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不同废弃线路板中金属元素含量及资源化价值分析
doi: 10.13205/j.hjgc.201504025
METAL ELEMENTS CONTENT AND RESOURCE VALUE ANALYSIS IN DIFFERENT WASTE PRINTED CIRCUIT BOARD
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摘要: 线路板是电子废弃物的核心部分,每年产生的废弃线路板数量巨大,而典型线路板中约含金属30%。随机收集市场上不同品牌型号及生产年代的废弃电脑、手机、硬盘、工业控制器等进行粗拆,对其线路板进行系统的精细拆解,对比分析了拆除元器件线路板和元器件上的金属含量以及其潜在的资源化价值,发现不同线路板金属种类和含量差别明显,废弃工业控制器和硬盘线路板的资源化价值远大于电脑和手机,尤其是贵金属金含量高,价值高达80万元/t,普通金属尤其是铜的含量巨大,可达20 kg/t,集中分布在脱除元器件的线路板上。Abstract: Printed circuit boards ( PCB) are the core part of electronic waste，and a huge number of waste PCB generated every year． The typical PCB contains about 30% metal in weight． Different electric and electronic equipment has different function． In this paper different waste PCBs including computers，cellphones，hard disks and industrial controller were dismantled． This paper provided the contrast analysis of the metal content of waste PCB and their potential value． The waste PCB was removed from components on PCB． Kinds and content of metals varied in different waste PCB． The potential value of industrial controllers and hard disks was 800 000 yuan per ton，larger than computers and cellphones． The content of common metals especially copper was about 20 kg /t，and mainly concentrated in the removal of components circuit board．
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Key words:
- waste PCB /
- metal content /
- value analysis
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