菱形磁介质参数对磁场特性的影响

金属矿山 ›› 2016, Vol. 45 ›› Issue (04): 110-114.

菱形磁介质参数对磁场特性的影响

张涛^1,2，李茂林^1,2,3，胡伟^1,2，姚伟^1,2，彭兴华^1,2

1.武汉科技大学资源与环境工程学院，湖北武汉 430081；2.冶金矿产资源高效利用与造块湖北省重点实验室，湖北武汉 430081；3.长沙矿冶研究院有限责任公司，湖南长沙 410012

出版日期:2016-04-15 发布日期:2016-08-16

Influence of the Parameter of Diamond Magnetic Medium on Magnetic Field Property

Zhang Tao^1,2，Li Maolin^1,2,3，Hu Wei^1,2，Yao Wei^1,2，Peng Xinghua^1,2

1.College of Resources and Environmental Engineering,Wuhan University of Science and Technology,Wuhan 430081,China；2.Hubei Key Laboratory for Efficient Utilization and Agglomeration of Metallurgic Mineral Resources，Wuhan 430081,China；3.Changsha Research Institute of Mining and Metallurgy Co.，Ltd.，Changsha 410012,China

Online:2016-04-15 Published:2016-08-16

摘要/Abstract

摘要： 为考察菱形磁介质表面的磁场特性随其顶角α的变化趋势，采用ANSYS软件模拟了不同顶角角度下的菱形磁介质在不同背景磁感应强度下的磁场特性。结果表明：背景磁感应强度为0.2 T时，菱形聚磁介质表面产生的磁场强度、磁场梯度和磁场力均随α的增加而降低；背景磁感应强度大于0.2 T时，菱形磁介质表面产生的磁场强度、磁场梯度和磁场力均随α的增加呈先提高后降低的趋势，并且在达到极值前随α的增加缓慢提高，达到极值后随α的增加快速降低。磁介质顶角α增加使得介质有效迎磁面积增大，这有利于提高介质的聚磁能力，表现为磁场强度、磁场梯度和磁场力的提高，但有效迎磁面积太大会使磁力线分布更为分散，导致磁场强度、磁场梯度和磁场力的降低。在低背景磁感应强度下，聚磁能力始终小于分散磁场力的作用，表现为磁场强度、磁场梯度、磁场力随介质顶角的增加先缓慢下降后快速下降；在高背景磁场强度下，α小于某角度时，聚磁作用大于分散磁场力作用，α大于这个角度时，聚磁作用小于分散磁场力作用，表现为磁场强度、磁场梯度、磁场力随介质顶角的增加先缓慢提高后快速下降。

关键词: 菱形磁介质, 顶角角度, 磁场强度, 磁场梯度, 磁场力, 有效迎磁面积

Abstract: In order to investigate the magnetic properties variation tendency of the diamond magnetic media with the change of the vertex angle，ANSYS software is used to simulate the magnetic field characteristics at different diamond vertex angle and various background magnetic field strength.The results show that when background magnetic field strength is 0.2T，the magnetic field intensity，magnetic field gradient and magnetic field force reduce with the increase of α angle.When background magnetic field strength is more than 0.2 T，magnetic field intensity，magnetic field gradient and magnetic field force present tendency of first increase and then reduce with the increase of α angle.In addition，when α angle is less the extrema，the magnetic field intensity，magnetic field gradient and magnetic field force increase slowly，when α is more than the extrema，decrease rapidly.With the increase of α angle，the effective magnetic flux area will increase.This is helpful to improve medium magnetism gathering ability.The relative result is the increase of the magnetic field intensity，magnetic field gradient and magnetic field force，while the effective magnetic flux area is too big，magnetic line of force distribution will be more scattered，result in the reduce of the magnetic field intensity，magnetic field gradient and magnetic field force.With low background magnetic induction intensity，the magnetism gathering ability is always less than the effect of dispersion force，magnetic field intensity,magnetic field gradient and magnetic field force slowly decline and then rapidly decline；With high background magnetic field intensity，alpha is smaller than a certain angle，disperse magnetic effect is greater than the assembled magnetic force，and when alpha is bigger than a certain angle，disperse magnetic effect is smaller than the assembled magnetic force，greater than this angle，the assembled magnetic effect is less than the magnetic force，magnetic field intensity,magnetic field gradient and magnetic field force slowly increase when alpha is smaller than a certain angle，and falling fast when alpha is bigger than a certain angle.

Key words: Diamond magnetic media, Vertex angle, Magnetic field intensity, Magnetic field gradient, Magnetic field force, Effective magnetic flux area

张涛, 李茂林, 胡伟, 姚伟, 彭兴华. 菱形磁介质参数对磁场特性的影响[J]. 金属矿山, 2016, 45(04): 110-114.

ZHANG Tao, LI Mao-Lin, HU Wei, YAO Wei, PENG Xing-Hua. Influence of the Parameter of Diamond Magnetic Medium on Magnetic Field Property[J]. Metal Mine, 2016, 45(04): 110-114.

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