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| Metals Recovery from Fine Printed Circuit Boards Using Falcon SB Concentrator | |
| 作者姓名： | WEN Xue-feng ZHAO Yue-min PAN Yan-jun HE Ya-qun SONG Shu-lei WANG Zhuo-ya |
| 作者单位： | [1]Department of Environmental Science and Engineering, Tsinghua University, Beijing 100084, China [2]School of Chemical Engineering and Technology, China University of Mining ＆ Technology, Xuzhou, Jiangsu 221008, China [3]Dongpang Mine, Heibei Jinniu Energy ＆ Resources Co. Ltd, Xingtai, Hebei 054201,China |
| 基金项目： | Project 200360290015 supported by the Doctoral Program of Higher Education, China Ministry of Education |
| 摘 要： | Physical methods show great potential and advantages on comprehensive reutilization of waste printed circuit boards （PCBs） because of lower investment and operation cost, higher efficiency and environment friendliness. However, metals contained in fine fraction of PCBs cannot be recovered effectively by conventional equipments such as high tension electrostatic separator or shaking table. In the paper, this conundrum was resolved successfully with the enhanced Falcon SB concentrator. The separation mechanism of Falcon SB concentrator was analyzed and main factors affecting separation efficiency such as magnitude of rotation frequency of bowl, water counter pressure and slurry concentration of feed were studied and interaction of factors above also were investigated using Design-Expert software. Experiment results show that complete liberation degree and great difference of density between metals and nonmetals are suitable to recover metals from -74μm PCBs using enhanced Falcon SB concentrator and 80.77 % integration efficiency can be achieved when slurry concentration of feed is 40 g/L with the water counter pressure of 0.01 MPa and rotation frequency of 50 Hz. |
| 关 键 词： | 集中器 电力废料 印刷电路板 环境友好性 循环利用 |
| 收稿时间： | 2005-03-25 |
| 修稿时间： | 2005-08-20 |
Metals Recovery from Fine Printed Circuit Boards Using Falcon SB Concentrator |
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| WEN Xue-feng ZHAO Yue-min PAN Yan-jun HE Ya-qun SONG Shu-lei WANG Zhuo-ya.Metals Recovery from Fine Printed Circuit Boards Using Falcon SB Concentrator[J].Journal of China University of Mining and Technology,2005,15(4):322-328. | |
| Authors: | WEN Xue-feng ZHAO Yue-min PAN Yan-jun HE Ya-qun SONG Shu-lei WANG Zhuo-ya |
| Affiliation: | 1. Department of Environmental Science and Engineering,Tsinghua University,Beijing 100084,China 2. School of Chemical Engineering and Technology,China University of Mining & Technology,Xuzhou,Jiangsu 221008,China 3. Dongpang Mine,Heibei Jinniu Energy & Resources Co. Ltd,Xingtai,Hebei 054201,China |
| Abstract: | Physical methods show great potential and advantages on comprehensive reutilization of waste printed circuit boards (PCBs) because of lower investment and operation cost, higher efficiency and environment friendliness. However, metals contained in fine fraction of PCBs cannot be recovered effectively by conventional equipments such as high tension electrostatic separator or shaking table. In the paper, this conundrum was resolved successfully with the enhanced Falcon SB concentrator. The separation mechanism of Falcon SB concentrator was analyzed and main factors affecting separation efficiency such as magnitude of rotation frequency of bowl, water counter pressure and slurry concentration of feed were studied and interaction of factors above also were investigated using Design-Expert software. Experiment results show that complete liberation degree and great difference of density between metals and nonmetals are suitable to recover metals from -74 μm PCBs using enhanced Falcon SB concentrator and 80.77 % integration efficiency can be achieved when slurry concentration of feed is 40 g/L with the water counter pressure of 0.01 MPa and rotation frequency of 50 Hz. |
| Keywords: | Falcon concentrator centrifugal separation waste printed circuit boards integration efficiency |
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