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| 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 |
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Received:February 21, 2005
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| DOI： |
| KeyWord:Magnetic separation; Calculating magnetic field;Magnetic force; Ferromagnetic ellipsoidal ball;Ellipsoidal coordinate |
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| 1. Department of Physics, Capital Normal University, Beijing 100037, China ;2.Beijing General Research Institute of Mining and Metallurgy, Beijing 100044, China |
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| Abstract: |
| 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. |
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