کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
6353990 | 1622642 | 2015 | 8 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Mineralogical analysis of dust collected from typical recycling line of waste printed circuit boards
ترجمه فارسی عنوان
تجزیه و تحلیل مواد معدنی از گرد و غبار جمع آوری شده از خط بازیافت معمول از صفحات مدار چاپی
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کلمات کلیدی
تخته مدار چاپی را از بین ببرید، بازیافت، جداسازی مکانیکی، گرد و خاک، تجزیه و تحلیل کانی شناسی،
موضوعات مرتبط
مهندسی و علوم پایه
علوم زمین و سیارات
مهندسی ژئوتکنیک و زمین شناسی مهندسی
چکیده انگلیسی
As dust is one of the byproducts originating in the mechanical recycling process of waste printed circuit boards such as crushing and separating, from the viewpoints of resource reuse and environmental protection, an effective recycling method to recover valuable materials from this kind of dust is in urgent need. In this paper, detailed mineralogical analysis on the dust collected from a typical recycling line of waste printed circuit boards is investigated by coupling several analytical techniques. The results demonstrate that there are 73.1Â wt.% organic matters, 4.65Â wt.% Al, 4.55Â wt.% Fe, 2.67Â wt.% Cu and 1.06Â wt.% Pb in the dust, which reveals the dust is worthy of reuse and harmful to environment. The concentration ratios of Fe, Mn and Zn can reach 12.35, 12.33 and 6.67 respectively by magnetic separation. The yield of dust in each size fraction is nonuniform, while the yield of â0.75Â mm size fraction is up to 51.15Â wt.%; as the particle size decreases, the content of liberated metals and magnetic materials increase, and metals are mainly in elemental forms. The F, Cl and Br elements combing to C in the dust would make thermal treatment dangerous to the environment. Based on these results, a flowsheet to recycle the dust is proposed.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Waste Management - Volume 43, September 2015, Pages 434-441
Journal: Waste Management - Volume 43, September 2015, Pages 434-441
نویسندگان
Fangfang Wang, Yuemin Zhao, Tao Zhang, Chenlong Duan, Lizhang Wang,