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现代矿业 ›› 2024, Vol. 40 ›› Issue (03): 185-188.
为了更有效地优化磁选设备的磁系设计，提升磁场利用效率，以三极开放磁系为对象， 通过逐步增加钕铁硼磁块块数，对多层钕铁硼块形成的磁系进行了仿真模拟研究，并进一步探索了 在不同磁极距条件下，磁系的磁场分布特性及磁感应强度的变化规律。通过仿真研究得出：磁感应 强度与钕铁硼块数成正比，与磁材利用效率及作用深度成反比；磁极极距的增加，会减缓磁感应强度 随作用深度的增加而降低的趋势，在作用深度为 50 mm 时，出现大磁极距磁系磁感应强度反超小磁 极距磁系磁感应强度的情况。因此，不同磁块数量与磁极距在不同作用深度上，有一个最佳的组合 值，能最大限度地发挥磁材性能。
In order to optimize the magnetic system design of magnetic separation equipment more ef⁃ fectively and improve the utilization efficiency of magnetic field，taking the three-pole open magnetic sys⁃ tem as the object，the magnetic system formed by multi-layer Nd-Fe-B blocks was simulated by gradually increasing the number of Nd-Fe-B magnetic blocks.The magnetic field distribution characteristics and the variation of magnetic induction intensity of the magnetic system under different magnetic pole distances are further explored.Through simulation research，it is concluded that the magnetic induction intensity is propor⁃ tional to the number of Nd-Fe-B blocks，and inversely proportional to the utilization efficiency and depth of action of magnetic materials. The increase of the magnetic pole distance will slow down the trend of the mag⁃ netic induction intensity decreasing with the increase of the action depth.When the action depth is 50 mm， the magnetic induction intensity of the magnetic system with large magnetic pole distance reverses the mag⁃ netic induction intensity of the magnetic system with small magnetic pole distance.Therefore，there is an op⁃ timal combination value between the number of different magnetic blocks and the magnetic pole distance at different depths of action，which can maximize the performance of the magnetic material.
摘要： 为了更有效地优化磁选设备的磁系设计，提升磁场利用效率，以三极开放磁系为对象， 通过逐步增加钕铁硼磁块块数，对多层钕铁硼块形成的磁系进行了仿真模拟研究，并进一步探索了 在不同磁极距条件下，磁系的磁场分布特性及磁感应强度的变化规律。通过仿真研究得出：磁感应 强度与钕铁硼块数成正比，与磁材利用效率及作用深度成反比；磁极极距的增加，会减缓磁感应强度 随作用深度的增加而降低的趋势，在作用深度为 50 mm 时，出现大磁极距磁系磁感应强度反超小磁 极距磁系磁感应强度的情况。因此，不同磁块数量与磁极距在不同作用深度上，有一个最佳的组合 值，能最大限度地发挥磁材性能。
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