宋广翰1,
孟雯1,
王晓岩1,
苑文仪2,
李金惠3,
刘丽丽3,
白建峰2,
张承龙2,
王临才2,
王景伟2
1.上海第二工业大学环境与材料工程学院,上海 201209
2.上海第二工业大学上海电子废弃物资源化协同创新中心,上海 201209
3.清华大学环境学院,北京 100084
基金项目: 上海电子废弃物资源化协同创新中心开放基金项目(ZF1224)
上海第二工业大学学科建设项目(A20NH1609B10-2)
上海第二工业大学研究生基金项目(A01GY16F030)
Assessment of precious metal value in intelligent mobile phone printed circuit boards (PCBs)
WU Zebing1,,SONG Guanghan1,
MENG Wen1,
WANG Xiaoyan1,
YUAN Wenyi2,
LI Jinhui3,
LIU Lili3,
BAI Jianfeng2,
ZHANG Chenglong2,
WANG Lincai2,
WANG Jingwei2
1.School of Environmental and Materials Engineering, Shanghai Polytechnic University, Shanghai 201209, China
2.Shanghai Collaborative Innovation Centre for WEEE Recycling, Shanghai Polytechnic University, Shanghai 201209, China
3.School of Environment, Tsinghua University, Beijing 100084, China
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摘要:为了解智能手机线路板中贵金属资源化价值,采用王水消解-ICP方法、Gompertz模型和卡内基梅隆模型分析其不同元器件中贵金属(金、银和钯)含量及其资源化价值。结果表明:贵金属主要分布在芯片和焊锡(掺杂电容电阻)中,其金、银和钯含量分别为 321.6、332.01、2.86 mg·kg-1 和 27.61、1 838.07、7.16 mg·kg-1。其中,芯片中金含量最高,占到贵金属总含量的 69.90%。经预测,2020 年智能手机报废量约为 3.06 亿部,且预测芯片中贵金属资源化价值最高,约占贵金属总价值的 57.70%。因此,建议对智能手机贵金属资源化回收时,芯片单独进行贵金属回收,可提高其回收效率。
关键词: 电子废弃物/
智能手机/
贵金属/
元器件/
芯片/
资源化
Abstract:With the expansive amount of the intelligent mobile phones, a great number of waste mobile phones need to be recycled and treated. As an important source of precious metals, the mobile phone printed circuit board has always been paid more attention by researchers. In order to know the recycling value of precious metals in the intelligent mobile phone, the contents of the precious metals (Au, Ag and Pd) in different components have been analyzed through the ICP method after digestion with aqua regia. The recycling value of precious metal has been estimated by Gompertz and Carnegie Mellon models. The results show that the contents of precious metals in chip and solder (mixing capacitance and resistance) are higher than other components, in which the contents of Au, Ag and Pd reach 321.6, 332.01, 2.86 mg·kg-1 and 27.61, 1 838.07, 7.16 mg·kg-1, respectively. Especially, the gold content in chip is the highest, accounting for 69.90% of the total amount of precious metals. It also predicts that the amount of waste intelligent mobile phone will be approximately 306 million in 2020. The recycling value of the chip is the highest in all components, which accounts for 57.70% of the total precious metals value of all components. Therefore, chip should be recovered alone to extract valuable metals to improve its recovery rates before recycling the whole intelligent mobile phone boards.
Key words:e-waste/
intelligent mobile phone/
precious metal/
components/
chip/
recycling.
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智能手机线路板中贵金属资源化价值评价
吴泽兵1,,宋广翰1,
孟雯1,
王晓岩1,
苑文仪2,
李金惠3,
刘丽丽3,
白建峰2,
张承龙2,
王临才2,
王景伟2
1.上海第二工业大学环境与材料工程学院,上海 201209
2.上海第二工业大学上海电子废弃物资源化协同创新中心,上海 201209
3.清华大学环境学院,北京 100084
基金项目: 上海电子废弃物资源化协同创新中心开放基金项目(ZF1224) 上海第二工业大学学科建设项目(A20NH1609B10-2) 上海第二工业大学研究生基金项目(A01GY16F030)
关键词: 电子废弃物/
智能手机/
贵金属/
元器件/
芯片/
资源化
摘要:为了解智能手机线路板中贵金属资源化价值,采用王水消解-ICP方法、Gompertz模型和卡内基梅隆模型分析其不同元器件中贵金属(金、银和钯)含量及其资源化价值。结果表明:贵金属主要分布在芯片和焊锡(掺杂电容电阻)中,其金、银和钯含量分别为 321.6、332.01、2.86 mg·kg-1 和 27.61、1 838.07、7.16 mg·kg-1。其中,芯片中金含量最高,占到贵金属总含量的 69.90%。经预测,2020 年智能手机报废量约为 3.06 亿部,且预测芯片中贵金属资源化价值最高,约占贵金属总价值的 57.70%。因此,建议对智能手机贵金属资源化回收时,芯片单独进行贵金属回收,可提高其回收效率。
English Abstract
Assessment of precious metal value in intelligent mobile phone printed circuit boards (PCBs)
WU Zebing1,,SONG Guanghan1,
MENG Wen1,
WANG Xiaoyan1,
YUAN Wenyi2,
LI Jinhui3,
LIU Lili3,
BAI Jianfeng2,
ZHANG Chenglong2,
WANG Lincai2,
WANG Jingwei2
1.School of Environmental and Materials Engineering, Shanghai Polytechnic University, Shanghai 201209, China
2.Shanghai Collaborative Innovation Centre for WEEE Recycling, Shanghai Polytechnic University, Shanghai 201209, China
3.School of Environment, Tsinghua University, Beijing 100084, China
Keywords: e-waste/
intelligent mobile phone/
precious metal/
components/
chip/
recycling
Abstract:With the expansive amount of the intelligent mobile phones, a great number of waste mobile phones need to be recycled and treated. As an important source of precious metals, the mobile phone printed circuit board has always been paid more attention by researchers. In order to know the recycling value of precious metals in the intelligent mobile phone, the contents of the precious metals (Au, Ag and Pd) in different components have been analyzed through the ICP method after digestion with aqua regia. The recycling value of precious metal has been estimated by Gompertz and Carnegie Mellon models. The results show that the contents of precious metals in chip and solder (mixing capacitance and resistance) are higher than other components, in which the contents of Au, Ag and Pd reach 321.6, 332.01, 2.86 mg·kg-1 and 27.61, 1 838.07, 7.16 mg·kg-1, respectively. Especially, the gold content in chip is the highest, accounting for 69.90% of the total amount of precious metals. It also predicts that the amount of waste intelligent mobile phone will be approximately 306 million in 2020. The recycling value of the chip is the highest in all components, which accounts for 57.70% of the total precious metals value of all components. Therefore, chip should be recovered alone to extract valuable metals to improve its recovery rates before recycling the whole intelligent mobile phone boards.
