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分析了电视、电脑、空调和冰箱等9个种类8个年份共72个废电路板样品中的铜、金和银含量随时间变化规律。不同种类废电路板中铜含量存在明显差距，洗衣机电路板平均值最低，电话电路板平均值最高，分别为4.58%和20.38%。废电路板中金和银含量均呈逐年下降趋势，电话电路板金含量平均值最低，手机电路板金含量平均值最高，分别是0.17 g/t和305.69 g/t；电话电路板银含量最低，电脑电路板银含量最高，分别为3.19 g/t和524.12 g/t。不同种类电路板的经济价值差别较大，其中手机电路板经济价值最高，达到18.6万元/t，金的经济价值占16.8万元/t，洗衣机电路板经济价值最低，仅0.6万元/t。根据多年生产经验，对火法工艺处理废电路板控制入炉料的成分提出了建议。
Abstract：The variation of copper, gold and silver content over time in 72 waste printed circuit boards samples from 9 types, 8 years, including television, computer, air conditioning and refrigerator were analyzed. There is a significant difference in copper content among different types of waste circuit boards, the average value for washing machine circuit boards is the lowest(4. 58%) and the average value for telephone circuit boards is highest(20. 38%). The gold and silver content in waste circuit boards decrease year by year. The average gold content in telephone circuit boards is the lowest(0. 17 g/t), while the average gold content in mobile phone circuit boards is the highest(305. 69 g/t). The silver content in telephone circuit boards is the lowest(3. 19 g/t), and the silver content in computer circuit boards is the highest(524. 12 g/t). The economic value of different types of circuit boards varies greatly, of which the mobile phone circuit boards have the highest economic value(186 000 RMB/t),the economic value of gold account for 168 000 RMB/t, and washing machine circuit boards having the lowest economic value(6 000 RMB/t). Based on many years of production experience, some suggestions for controlling the composition of feeding materials for pyrometallurgical treatment of waste circuit boards are put forward.
[1]ARYA S,KUMAR S.Bioleaching:urban mining option to curb the menace of e-waste challenge[J].Bioengineered,2022,11(1):640-660.
[2]XAVIER L H,OTTONI M,ABREU L P P.A comprehensive review of urban mining and the value recovery from e-waste materials[J].Resources,Conservation and Recycling,2023,190:106840.DOI:10.1016/j.resconrec.2022.106840.
[3]ANNAMALAI M,GURUMURTH Y K.Characterization of end-of-life mobile phone printed circuit boards for its elemental composition and beneficiation analysis[J].Journal of the Air&Waste Management Association,2021,71(3):315-327.
[4]LIU Y B,ZHANG J L,YANG X,et al.Efficient recovery of valuable metals from waste printed circuit boards by microwave pyrolysis[J].Chinese Journal of Chemical Engineering,2021,40(12):262-268.
[5]王海北.我国二次资源循环利用技术现状与发展趋势[J].有色金属(冶炼部分),2019(9):1-11,17.WANG H B.Status and prospect on recycling technologies of secondary resources in China[J].Nonferrous Metals(Extractive Metallurgy),2019(9):1-11,17.
[6]徐唐灿,钟怡玮,谢佳俊,等.二次资源中有价金属湿法回收利用研究进展[J].中国有色金属学报,2024,34(3):855-876.XU T C,ZHONG Y W,XIE J J,et al.Research progress of hydrometallurgical recovery and utilizationof valuable metals from secondary resources[J].The Chinese Journal of Nonferrois Metals,2024,34(3):855-876.
[7]刘晓静,吴玉锋,李彬,等.废线路板典型利用处置技术污染防控研究进展[J].有色金属(冶炼部分),2021(10):71-80.LIU X J,WU Y F,LI B.Research progress on pollution prevention and control of typical utilization and disposal technology of waste printed circuit boardl[J].Nonferrous Metals(Extractive Metallurgy),2021(10):71-80.
[8]CHEN Z,YANG M,SHI Q,et al.Recycling waste circuit board efficiently and environmentally friendly through small-molecule assisted dissolution[J].Scientific Reports,2019,9(1):17902-17911.
[9]王芳,黄雪约,刘艳丽,等.典型废电路板熔炼工艺污染物排放特征及迁移规律[J].有色金属(冶炼部分),2022(8):98-101.
[10]CHEN M J,OGUNSEITAN O A,WANG J B,et al.Evolution of electronic waste toxicity:trends in innovation and regulation[J].Environment International,2016,89:147-154.
[11]KOUSAITI A,HAHLADKIS J N,SAVVILOTIDOU V,et a1.Assessment of tetrabromobisphenol-A(TBBPA)content in plastic waste recovered from WEEE[J].Journal of Hazardous Materials,2020,390:121641-121648.
[12]BANIASADI M,GRAVES J E,RAY D A,et al.Closed-loop recycling of copper from waste printed circuit boards using bwoleaching and electrowinning processes[J].Waste and Biomass Valorization,2021(12):3125-3136.
[13]NARAYANASAMY M,DHANASEKARAN D,VINOTHINI G,et al.Extraction and recovery of precious metals from electronic waste printed circuit boards by bioleaching acidophilic fungi[J].International Journal of Environmental Science and Technology,2018,15(1):119-132.
[14]VATS M C,SINGH S K.Assessment of gold and silver in assorted mobile phone printed circuit boards(PCBs)[J].Waste Manage,2015,45:280-288.
[15]丁银贵,陈士朝,黄文,等.废旧印刷电路板熔池熔炼技术节能降碳分析[J].有色金属(冶炼部分),2022(9):77-82.DING Y G,CHEN S C,HUANG W,et al.Analysis on energy saving and carbon reduction of bath smelting technology of waste printed circuit boards[J].Nonferrous Metals(Extractive Metallurgy),2022(9):77-82.
[16]李强,杨必文,章小兵,等.废线路板自热熔炼渣物化性能研究[J].有色金属工程,2021,11(7):114-120.LI Q,YANG B W,ZHANG X B,et al.Research on physicochemical properties of autothermal melting slag of waste circuit board[J].Nonferrous Metals Engineering,2021,11(7):114-120.
[17]王海北,章小兵,谢铿,等.废电路板与废杂铜协同处置利用技术与发展方向[J].矿冶,2022,31(3):1-5.WANG H B,ZHANG X B,XIE K,et al,Status and prospect of combined smelting technology for PCB and copper scrap[J].Mining and Metallurgy,2022,31(3):1-5.
[18]SCHWARTZ E,HE H Y,FROST K,et al.Comparative life cycle assessment of copper and gold recovery from waste printed circuit boards:pyrometallurgy,chemical leaching and bioleaching[J].Journal of Hazardous Materials,2024,475:134545.DOI:10.1016/j.jhazmat.2024.134545.
[19]FARAJI F,GOLMOHAMMADZADEH R,PICKLES Cr A.Potential and current practices of recycling waste printed circuit boards:A review of the recent progress in pyrometallurgy[J].Journal of Environmental Management,2022,316:115242.DOI:10.1016/j.jenvman.2022.115242.
[20]刘风华,黄文,丁勇,等.富氧顶吹熔池熔炼处理废线路板初探[J].有色金属(冶炼部分),2019(9):92-96.LIU F H,HUANG W,DING Y,et al.Study on treatment of waste printed circuit board by oxygen enrichment top blowing bath smelting[J].Nonferrous Metals(Extractive Metallurgy),2019(9):92-96.
[21]刘健平,刘风华,黄文,等.废线路板火法熔炼过程控制及炉体设备的研究与实践[J].矿冶,2019,28(6):78-82.LIU J P,LIU F H,HUANG W,et al.Study on the process control of WPCBs smelting and the research and practice of furnace[J].Mining and Metallurgy,2019,28(6):78-82.
基本信息:
DOI：10.20237/j.issn.1007-7545.2025.02.020
中图分类号:X705
引用信息:
[1]丁银贵,黄文,陈士朝,等.废电路板金属含量及经济价值研究[J].有色金属(冶炼部分),2025(02):178-184.DOI:10.20237/j.issn.1007-7545.2025.02.020.
基金信息:
国家重点研发计划项目（2022YFC3901505）
2024-06-28
2024
2024-07-17
2024-07-18
2024
1
2025-01-23
2025-01-23