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废弃印刷电路板上电子元器件拆卸新工艺及其机理

Keywords: 工业余热,脉动喷吹,废弃印刷电路板,拆卸

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Abstract:

为了明确利用热空气模拟工业余热作为热源和脉动喷吹动力源拆卸废弃印刷电路板上电子元器件的拆卸机制,分析了废弃印刷电路板脉动喷吹性质,设计并建立了废弃印刷电路板拆卸实验室小试系统,利用Fluent数值模拟软件对拆卸过程中废弃印刷电路板自动拆卸设备内部温度场进行了详细考察,在此基础上,对实验结果进行验证。结果表明,短重边最佳喷吹条件(0.14MPa,10mm)下,振动角度为75°;短轻边最佳喷吹条件(0.12MPa,10mm)下,振动角度为76°;下进气条件(温度场更均匀,焊料面平均受热温度为198.81℃)更利于废弃印刷电路板上电子元器件的拆卸;采用下进气方式、当预热温度120℃、通气温度为260℃、设备内部达195℃继续通气(拆卸时间)1min、短重边脉动喷吹压力0.14MPa、短重边喷吹距离10mm、短轻边脉动喷吹压力0.12MPa、短轻边喷吹距离10mm时,元器件拆卸率为95.1%,且元器件外观完好。本研究明确了废弃印刷电路板拆卸过程中的受热与受力机制,实现了废弃印刷电路板上电子元器件的高效拆卸,为此工艺大规模、工业化生产的实现奠定了理论基础。

References

[1]  吴峰.国外电子废弃物的环境管理技术初探.中国环境管理, 2001, (3):24-26 Wu Feng.Technique of E-waste environmental management in foreign countries.Chinese Journal of Environmental Management, 2001, (3):24-26(in Chinese)
[2]  Xiu Furong, Qi Yingying, Zhang Fushen.Recovery of metals from waste printed circuit boards by supercritical water pre-treatment combined with acid leaching process.Waste Management, 2013, 33 (5):1251-1257
[3]  Sato Kazhiko, Sato Koji, Yasuda Takeshi, et al.Method and device for recovering resource from laminated sheet.日本专利:10-314711, 1998-12-02
[4]  Yamada Keirtajp, Tanaka Yukiro, Baba Hidetoshi, et al.A method for recovering metal from circuit board and device there for.日本专利:06-256863, 2007-04-12
[5]  Zhang Y., Liu S., Xie H., et al.Current status on leaching precious metals from waste printed circuit boards.Procedia Environmental Sciences, 2012, 16:560-568
[6]  Yang Jianguang, Wu Yongtian, Li Jing.Recovery of ultrafine copper particles from metal components of waste printed circuit boards.Hydrometallurgy, 2012, (121-124):1-6
[7]  赵跃民, 段晨龙, 何亚群.电子废弃物的物理分选理论与技术.北京:科学出版社, 2009
[8]  Zhu Nengwu, Xiang Yun, Zhang Ting, et al.Bioleaching of metal concentrates of waste printed circuit boards by mixed cultured of acidophilic bacteria.Journal of Hazardous Materials, 2011, 192 (2):614-619
[9]  Xing Mingfei, Zhang Fushen.Degradation of brominated epoxy resin and metal recovery from waste printed circuit boards through batch sub/supercritical water treatments.Chemical Engineering Journal, 2013, 219:131-136
[10]  Duan Huabo, Hou Kun, Li Jinhui, et al.Examining the technology acceptance for dismantling of waste printed circuit boards in light of recycling and environmental concerns.Journal of Environmental Management, 2011, 92 (3):392-399
[11]  陈海焱, 陈梦君, 陈俊冬, 等.利用工业废气自动拆卸废弃印刷电路板上电子元器件的方法:中国, CN 102554387.2012-07-11
[12]  Zhou Yihui, Qiu Keqiang.A new technology for recycling materials from waste printed circuit boards.Journal of Hazardous Materials, 2010, 175 (1-3):823-828
[13]  佳能株式会社.焊料回收方法及焊料回收装置:中国, 1288795.2001-03-28
[14]  赵子文, 王玉琳, 宋守许, 等.废弃印刷电路板脱焊设备的研制与应用.组合机床与自动化加工技术, 2009, (10):95-98 Zhao Ziwen, Wang Yulin, Song Shouxu, et al.Development and application of unsoldering equipment for printed circuit board scraps.Modular Machine Tool & Automatic Manufacturing Technique, 2009, (10):95-98(in Chinese)
[15]  Zebedin H., Daichendt K., Kopacek P.A new strategy for a flexible semi-automatic disassembling cell of printed circuit boards//Man Hyung Lee, Hiromasa Haneda.2001 IEEE International Symposium on Industrial Electronics.Pusan:Institute of Electrical and Electronics Engineers, Inc., 2001:1742-1746
[16]  潘晓勇, 李忠良, 郅慧, 等.电路板元器件和焊料分离回收方法及装置:中国, 101112728.2008-01-30
[17]  李海燕, 刘静.低品位余热利用技术的研究现状、困境和新策略.科技导报, 2010, 28(17):112-117 Li Haiyan, Liu Jing.Current research status, difficulties and new strategy in utilization of low grade heat.Science & Technology Review, 2010, 28 (17):112-117(in Chinese)
[18]  王永贤, 周风.电子垃圾现状及对策分析.黑龙江环境通报, 2004, 28(4):19-20 Wang Yongxian, Zhou Feng.The present condition of eleetric garbage and countermeasure.Heilongjiang Environmental Journal, 2004, 28 (4):19-20
[19]  Richter H., Lorenz W., Bahadir M.Examination of organic and inorganic xenobiotics in equipped printed circuits.Chemosphere, 1997, 35 (1-2):169-179
[20]  湛志华.废弃电路板环氧树脂真空热裂解实验及机理研究.长沙:中南大学博士学位论文, 2011 Zhan Zhihua.Vacuum pyrolysis and the mechanism research on waste epoxy printed circuit boards.Changsha:Doctor Dissertation of Central South University, 2011(in Chinese)
[21]  李忠良, 郅慧, 等.电路板元器件拆卸设备:中国, CN 101417358A.2009-4-29
[22]  Kopacek P., Kopacek B.Intelligent, flexible disassemble.International Journal of Advanced Manufacturing Technology, 2006, 30 (5-6):554-560
[23]  闻诚.电路板元器件拆除加热工艺优化及其热分析研究.合肥:合肥工业大学硕士学位论文, 2009 Wen Cheng.Research on heating process optimization and thermal analysis of PCB components dismantling.Hefei:Master Dissertation of Hefei University of Technology, 2009
[24]  连红奎, 李艳, 束光阳子, 等.我国工业余热回收利用技术综述.节能技术, 2011, 29(166):123-133 Lian Hongkui, Li Yan, Shuguang Yangzi, et al.An overview of domestic technologies for waste heat utilization.Energy Conservation Technology, 2011, 29 (166):123-133(in Chinese)
[25]  王福军.计算流体动力学分析.北京:清华大学出版社, 2004

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