流動層磁気アシスト比重分離法に関する基礎的研究(ソフト磁性材料)

概要

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Feasibility study of magnetic separation of sample powders with small difference in their specific gravity which was ineffective, was carried out, by magnetic separation by focusing on the difference in their magnetic properties. An apparatus to separate the ferromagnetic particles from the mixed powder with small difference in its specific gravity was made. To investigate the relation between the sizes of the particles and separation efficiency, systematical examination of the separation ratio was done while changing the sizes of the ferromagnetic and paramagnetic particles. Successful separation of dry powders with small difference in their gravities was achieved in a magnetic field by using t,his apparatus. With a sample composed of a mixture of Cu-Zn ferrite and Al_2O_3 with the grain size of 45μm, the separation efficiency of the Al_2O_3 was close to 100%. As the size of particles of the mixed powers became smaller, its separation efficiency decreasecl, which could be attributed to the aggregation/flocculation of each particle.
社団法人日本磁気学会の論文
2004-03-01