Effects of material temperature on the separation efficiency in a rotary-drum type eddy current separator

被引：11
作者：
Yi, Yuan [1 ]
Bin, Cao [1 ,2 ]
Xuemei, Zhang [1 ]
Lei, Feng [1 ,2 ]
Tiansheng, Wang [1 ,2 ]
Qiang, Wang [2 ]
机构：
[1] Northeastern Univ, Sch Met, Shenyang 110819, Peoples R China
[2] Northeastern Univ, Key Lab Electromagnet Proc Mat, Minist Educ, Shenyang 110819, Peoples R China
来源：
POWDER TECHNOLOGY | 2022年 / 404卷
基金：
中国国家自然科学基金;
关键词：
Material temperature; Eddy current separation; Numerical simulation; Separation index; Lorentz force; PARTICLES; MODEL; TECHNOLOGY; COPPER; PERFORMANCE; METALS; FORCES; FLOW;
D O I：
10.1016/j.powtec.2022.117449
中图分类号：
TQ [化学工业];
学科分类号：
0817 ;
摘要：
Improving the separation efficiency of eddy current separator is of great significance in solid waste recycling. In this study, a three-dimensional transient simulation model of eddy current separator was established based on the finite element analysis. The effects of material temperature on the separation were investigated by combining simulations and separation experiments. New concepts, such as separation index and direction angle, were proposed to clarify the related mechanism. It was found that reducing the material temperature can increase the Lorentz force on conductive non-ferrous particles, so the residual temperature after cryogenic crushing can be used to improve the separation between conductive nonferrous and non-conductive materials. Reducing the material temperature will also increase the fluctuation of the Lorentz force, which negatively affects the separation between different non-ferrous metals. The results revealed that different optimization indexes should be set for different mixtures in the design and optimization of the eddy current separator. (c) 2022 Published by Elsevier B.V.
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页数：10
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