旋转磁场特性及其磁选行为影响规律  

Characteristics of the rotating magnetic field and its influence on magnetic separation behavior

作　　者：尚红亮 李国平[1,3] 沈政昌 王天歌 SHANG Hongliang;LI Guoping;SHEN Zhengchang;WANG Tiange(BGRIMM Technology Group,Beijing 100160,China;College of Mechanical Engineering,University of Science&Technology Beijing,Beijing 100083,China;National Key Laboratory for Mineral Processing Science&.Technology,Beijing 102628,China)

机构地区：[1]矿冶科技集团有限公司,北京100160 [2]北京科技大学机械工程学院,北京100083 [3]矿物加工科学与技术国家重点实验室,北京102628

出　　处：《中国矿业大学学报》2022年第3期599-606,共8页Journal of China University of Mining & Technology

基　　金：国家重点研发计划项目(2021YFC2902402-2)。

摘　　要：旋转磁场属于开放式磁场中一种特殊磁场形式,可有效降低强磁性矿物的磁团聚影响,提高分选效率.本文采用理论分析和试验验证的方法,设计了旋转磁场实验装置,仿真模拟了多种旋转磁场结构的磁场,根据不同结构方案在相同分选区域的磁场力分布特性,发现了较优的磁路方案;应用动力学相关方法,研究了旋转磁场中单一磁性颗粒的运动特性,揭示了磁性颗粒的运动规律;基于试验装置平台,分析了装置运转参数影响规律并进行了干式和湿式2种工况的试验验证,确定了分选装置关键结构及参数,为工业装置的结构设计及运转提供了理论参考.结合理论研究分析,设计了旋转磁场磁选装备并进行了工业应用,获得优异分选指标.The rotating magnetic field is a special form of open magnetic field and can improve the separation process by reducing the magnetic aggregation effect of ferromagnetic minerals effectively.In this paper,the magnetic field of various rotating magnetic field structures was simulated and the optimum magnetic circuit scheme was found by comparing the magnetic force distribution characteristics in the same separation region.An experimental device with rotating magnetic field was designed.The motion characteristics of single magnetic particle in rotating magnetic field were studied experimentally,and the motion law of magnetic particle was revealed.Based on the experimental data,the influence of the operating parameters of the device was analyzed,and the verification tests under dry and wet conditions were carried out to determine the key structure and the operating parameters of the magnetic separator,which provides a theoretical reference for the equipment design and industrial application.Based on the theoretical analysis and experiment investigation,the rotating magnetic field separator was designed and applied in industry,and the improved separation performance has been achieved.

关 键 词：旋转磁场 磁团聚 磁场力特性 运转规律 旋转磁场磁选机 

分 类 号：TD924[矿业工程—选矿]