Application of Electromagnetic (EM) Separation Technology to Metal Refining Processes: A Review
Application of Electromagnetic (EM) Separation Technology to Metal Refining Processes: A Review
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DOI：
10.1007/s11663-014-0123-y
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发表时间：
2014-07
期刊：
影响因子：
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通讯作者：
Lifeng Zhang;S. Wang;A. Dong;Jianwei Gao;L. Damoah
中科院分区：
文献类型：
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作者：
Lifeng Zhang;S. Wang;A. Dong;Jianwei Gao;L. Damoah
将电磁力应用于金属加工已被认为是生产清洁金属和其他先进材料的新兴技术。介绍了电磁分离的原理，综述了直流电场加正交稳恒磁场、交流电场、交流磁场、行波磁场等几种电磁场的施加方案。讨论了电磁场作用下导电液体中单个或多个粒子的受力情况及其运动轨迹。综述了电磁技术在铝、锌、镁、硅、铜、钢等液态金属净化中的应用。讨论了电磁处理参数，如外加磁场频率、外加磁通密度、处理时间、颗粒尺寸和电磁单元尺寸对电磁净化效率的影响。实验和理论研究表明，电磁净化铝液中夹杂物的分离效率可达90%以上。同时，还将EM净化技术应用于金属熔体中金属间化合物的分离，如铝熔体中的α-AlFeMnSi相。最后提出了电磁技术在工业上的应用前景。
Application of electromagnetic (EM) force to metal processing has been considered as an emerging technology for the production of clean metals and other advanced materials. In the current paper, the principle of EM separation was introduced and several schemes of imposing EM field, such as DC electric field with a crossed steady magnetic field, AC electric field, AC magnetic field, and traveling magnetic field were reviewed. The force around a single particle or multi-particles and their trajectories in the conductive liquid under EM field were discussed. Applications of EM technique to the purification of different liquid metals such as aluminum, zinc, magnesium, silicon, copper, and steel were summarized. Effects of EM processing parameters, such as the frequency of imposed field, imposed magnetic flux density, processing time, particle size, and the EM unit size on the EM purification efficiency were discussed. Experimental and theoretical investigations have showed that the separation efficiency of inclusions from the molten aluminum using EM purification could as high as over 90 pct. Meanwhile, the EM purification was also applied to separate intermetallic compounds from metal melt, such asα-AlFeMnSi-phase from the molten aluminum. And then the potential industrial application of EM technique was proposed.