【作者】 张子生； 崔晋； 高娇娇； 张嘉曦； 王艺；

【Author】 ZHANG Zi-sheng;CUI Jin;GAO Jiao-jiao;ZHANG Jia-xi;WANG Yi;Electrostatic Research Institute,College of Physical Science and Technology,Hebei University;Institute of Microelectronics,School of Information Engineering,Hebei University of Technology;

【机构】 河北大学物理科学与技术学院静电研究所； 河北工业大学信息工程学院微电子技术与材料研究所；

【摘要】 为了提高针辊式高压静电分选机的分选效率,须寻求最佳的电晕极结构。利用自制针辊式高压静电分选机,固定针辊距离为d=50mm,进行针辊放电实验。通过调整电晕电压、放电针间距及长短针排列方式,探讨分选电场分布规律,对针结构进行优化。结果表明:放电效果随针间距减小会出现先增强后减弱的过程,当针间距为12mm时达到最大值;在最佳针间距下,将针的长度按30mm-15mm-30mm的方式排列,得到了更好的放电效果,转辊表面电荷量在15k V时可提高33%;应用MATLAB软件,模拟了不同针间距对放电的影响,为静电分选机的优化设计提供了依据。更多还原

【Abstract】 In order to improve the separation efficiency of Needle-roller High-voltage electrostatic separator,optimizing corona electrode structure is necessary.The discharge experiments is done using self-made Needle-roller High-voltage electrostatic separator with a fixed needle roller distance of d = 50 mm.The distribution of Electrostatic separation electric field was analyzed by adjusting the voltage,discharge needles spacing and the needle arrangement to seek the optimization of corona electrode structure.The results showed that with the needle spacing decreases,discharge effect weakened after the first growth and the best value occurs when the needle spacing is 12 mm;Under the best-needle spacing,adjusting the needle arrangement for 30mm-15mm-30 mm and get a better discharge results.The amount of charge on the surface of the roller can be increased by 33% when the input voltage was 15 k V;Using MATLAB software,the effects of different needle spacing for discharge was simulated.The results provide a basis for the optimal design of the electrostatic separator.更多还原