کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
8093309 1522053 2018 29 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
High-temperature centrifugal separation of Cu from waste printed circuit boards
موضوعات مرتبط
مهندسی و علوم پایه مهندسی انرژی انرژی های تجدید پذیر، توسعه پایدار و محیط زیست
پیش نمایش صفحه اول مقاله
High-temperature centrifugal separation of Cu from waste printed circuit boards
چکیده انگلیسی
Supergravity separation by high-temperature centrifugation is an effective and environmentally friendly method for separating and recycling comminuted waste printed circuit boards (WPCBs). Present work is focused on the recovery of Cu from WPCBs by supergravity separation at high temperature. A two-step separation process was adopted to selectively recover Cu alloys at different temperatures. The results indicated that temperature has a significant influence on the composition of the resultant SnCu alloy, while the gravity coefficient, which may be adjusted by varying the centrifugation speed, has little effect on alloy composition and only affects the Cu recovery rate in the separation of the SnCu alloy. Following separation, the Cu contents of the alloys were more than 85 wt%. Under optimized conditions, i.e., a temperature of 1300 °C, a gravity coefficient of 1000, and a separation time of 5 min, the total recovery values achieved for Cu, Zn, Pb, and Sn were 93.56%, 65.07%, 92.92%, and 95.52%, respectively, for the whole separation process. This process provides a clean and efficient method for reclaiming valuable metals from WPCBs and preventing environmental pollution.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Cleaner Production - Volume 199, 20 October 2018, Pages 831-839
نویسندگان
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