基于三维结构特征的磁介质梯级磁感应特性研究

发布时间：2018-02-26 23:26

  本文关键词： 高梯度磁选 磁介质 圆棒介质 凸极介质 梯级调控　出处：《金属矿山》2017年12期 　论文类型：期刊论文

【摘要】：为了探究磁介质结构特征对分选效果影响的磁场理论基础,利用ANSYS电磁仿真技术分析了高梯度磁介质的三维结构特征对其周围磁感应分布特性的影响,通过与圆棒介质的磁感应特性进行系统的对比分析,探明了凸极结构特征对介质周围的磁感应分布的重要影响。结果表明:凸极结构不仅可以提高介质表面的最大磁感应强度,而且能为颗粒捕获提供轴向磁场梯度,且距离介质表面越近轴向梯度调控效应越明显;体积充填率相同时,凸极介质的最大磁感应强度要高于圆棒介质,且所产生的高磁感应强度区的有效面积也较大;凸极介质在距离介质体表面1.25 mm范围内的磁场梯度及磁场力要显著高于圆棒介质,此区域范围有利于强化弱磁性颗粒的捕获。
[Abstract]:In order to explore the magnetic field theory foundation of the influence of magnetic medium structure characteristics on the separation effect, the influence of three-dimensional structure characteristics of high gradient magnetic medium on the magnetic induction distribution around it is analyzed by using ANSYS electromagnetic simulation technology. By comparing and analyzing the magnetic induction characteristics of circular rod medium, the important influence of salient pole structure on the magnetic induction distribution around the medium is found. The results show that the salient pole structure can not only increase the maximum magnetic induction intensity on the surface of the medium, Moreover, the axial magnetic field gradient can be provided for particle capture, and the effect of axial gradient regulation is more obvious with the closer to the surface of the medium, the maximum magnetic induction intensity of the salient pole medium is higher than that of the circular rod medium when the volume filling ratio is the same. Moreover, the effective area of the high magnetic induction intensity region is also large, and the magnetic gradient and magnetic force of the salient medium in the range of 1.25 mm from the surface of the dielectric body is significantly higher than that of the circular rod medium, which is conducive to the enhancement of the capture of weak magnetic particles.
【作者单位】： 东北大学资源与土木工程学院;
【基金】：国家自然科学基金项目(编号:51604064) 中央高校基本科研业务费专项资金项目(编号:N150103003) 辽宁博士科研启动基金项目(编号:201601027)
【分类号】：TD924
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本文编号：1540156