在均匀外磁场里的铁磁椭球内外磁场和磁力的解析计算及其功用  

ANALYTICAL CALCULATION OF MAGNETIC FIELD AND MAGNETIC FORCE INSIDE AND OUTSIDE A FERROMAGNETIC ELLIPSOIDAL BALL PLACED IN AN EVEN EXTERNAL MAGNETIC FIELD AND ITS CONTRIBUTION TO MAGNETIC SEPARATION

作　　者：徐建成[1] 徐建民[2] 

机构地区：[1]首都师范大学物理系,北京100037 [2]北京矿冶研究总院,北京100044

出　　处：《矿冶》2005年第4期31-33,45,共4页Mining And Metallurgy

摘　　要：介绍了置于无限大均匀外磁场里的长轴与外磁场平行的铁磁性椭球体内外磁场和磁力的解析计算方法,讨论了它在磁选研究方面的功用。论述了特殊点的直角坐标与椭球坐标之间的对应关系,这便于用文内公式计算各点上的磁场和磁力,有利于对磁选技术的研究。The method of analytical calculate the magnetic field and the magnetic force inside and outside a ferromagnetic ellipsoidal ball placed in a boundless even external magnetic field, together with its contribution to magnetic separation, is given. In the calculation the long axis of the ellipsoidal ball is parallel to the external magnetic field. The corresponding relation betweent the orthogonal coordinates and the ellipsoidal coordinates of the special points is presented. It is convenient for calculating the magnetic field and the magnetic force at every point with the formulas in this paper and for research on magnetic separation.

关 键 词：磁选 磁场计算 磁力 铁磁椭球 椭球坐标 

分 类 号：TD924.1[矿业工程—选矿] TD457