永磁滚筒式磁选机的分析和设计
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摘要
磁选机是近年来逐渐应用的磁力机械,可广泛用于冶金及其它行业,如选矿、消除杂质等,也可作为回收重介质的专用设备。由于传统筒式磁选机具有经营费用低、运行稳定可靠等适合现场生产的优点,因此在磁选中占据着不可替代的地位。
本文针对利用永磁滚筒式磁选机回收重介质这一具体情况,对磁选机回收磁性矿粒需要的磁力进行分析,以有限元法为基础对磁选机磁场强度和气隙磁导进行了计算求解,建立了永磁滚筒式磁选机磁系结构的静态磁场计算的数学模型,研究了不同磁系结构对磁场特性的影响。
磁路部分是磁选机的主要部分,对磁选机的性能起决定性作用。磁选机采用开放型磁系。本文研究了磁选机磁系的高度、宽度、半径和极数,相邻磁极的磁位差,极距,极面宽和极隙宽的比值,磁极和磁极端面的形状,以及磁极端面到其排列中心的距离对磁场特性的影响,从理论上计算了磁选机磁系的各个参数,分析并且验证了不同磁系排列对磁场产生的不同作用。设计出一种结构先进、构造简单、成本低、工作可靠的永磁滚筒式磁选机。
对磁选机磁路进行了设计和仿真分析,应用工程电磁场计算软件OPERA建立了磁选机磁路部分的数学模型,计算出各种磁系结构下磁选机的磁场情况,可以简便地对磁路进行分析设计。
Magnetic separator is a magnetic machine, which is widely used in recent years. It can be used in metallurgy and other industries such as mineral separation, eliminate impurity and so on. It also can be used as special equipment for reclaiming heavy-medium. Because traditional cylinder magnetic separator has the advantages of low operation cost, stable operation, fit for locale production, it takes up irreplaceable position in magnetic separators.We analyzed the force of magnetic separator reclaiming magnetism mineral grain in the condition of callback heavy-medium. We calculated magnetic intensity based on electromagnetic vector potential finite-element-method, established mathematics model of magnetic system, and studied effect of different magnetic system configurations.Magnetic circuit is the main portion of magnetic separator. It decides the performance of magnetic separator. Magnetic system is open-ended. The paper studied the impact of magnetic system height, breadth, radius, number of poles, magnetic difference of potential, pole span, ratio of magnetic pole breadth and airspace breadth, shape of magnetic pole, distance of magnetic pole to the magnetic field's center, calculated parameter of magnetic system, analyzed and certification different action of different magnetic series, designed a kind of permanent magnet cylinder magnetic separator with advanced construction, simple constitution, working reliable .Finally, emulated the magnetic circuit, established mathematics model, calculated magnetic field characteristic with OPERA, so that to analyze the magnetic circuit simply.
本文针对利用永磁滚筒式磁选机回收重介质这一具体情况,对磁选机回收磁性矿粒需要的磁力进行分析,以有限元法为基础对磁选机磁场强度和气隙磁导进行了计算求解,建立了永磁滚筒式磁选机磁系结构的静态磁场计算的数学模型,研究了不同磁系结构对磁场特性的影响。
磁路部分是磁选机的主要部分,对磁选机的性能起决定性作用。磁选机采用开放型磁系。本文研究了磁选机磁系的高度、宽度、半径和极数,相邻磁极的磁位差,极距,极面宽和极隙宽的比值,磁极和磁极端面的形状,以及磁极端面到其排列中心的距离对磁场特性的影响,从理论上计算了磁选机磁系的各个参数,分析并且验证了不同磁系排列对磁场产生的不同作用。设计出一种结构先进、构造简单、成本低、工作可靠的永磁滚筒式磁选机。
对磁选机磁路进行了设计和仿真分析,应用工程电磁场计算软件OPERA建立了磁选机磁路部分的数学模型,计算出各种磁系结构下磁选机的磁场情况,可以简便地对磁路进行分析设计。
Magnetic separator is a magnetic machine, which is widely used in recent years. It can be used in metallurgy and other industries such as mineral separation, eliminate impurity and so on. It also can be used as special equipment for reclaiming heavy-medium. Because traditional cylinder magnetic separator has the advantages of low operation cost, stable operation, fit for locale production, it takes up irreplaceable position in magnetic separators.We analyzed the force of magnetic separator reclaiming magnetism mineral grain in the condition of callback heavy-medium. We calculated magnetic intensity based on electromagnetic vector potential finite-element-method, established mathematics model of magnetic system, and studied effect of different magnetic system configurations.Magnetic circuit is the main portion of magnetic separator. It decides the performance of magnetic separator. Magnetic system is open-ended. The paper studied the impact of magnetic system height, breadth, radius, number of poles, magnetic difference of potential, pole span, ratio of magnetic pole breadth and airspace breadth, shape of magnetic pole, distance of magnetic pole to the magnetic field's center, calculated parameter of magnetic system, analyzed and certification different action of different magnetic series, designed a kind of permanent magnet cylinder magnetic separator with advanced construction, simple constitution, working reliable .Finally, emulated the magnetic circuit, established mathematics model, calculated magnetic field characteristic with OPERA, so that to analyze the magnetic circuit simply.
引文
[1] 盛剑霓.电磁场数值分析.北京:科学出版社,1984.
[2] 孟庆龙,颜威利.电器数值分析.北京:机械工业出版社,1993.
[3] 冯慈璋.电磁场.高等教育出版社,1995.
[4] 王美华,吴祥林.新磁路永磁筒式磁选机的特点及应用.金属矿山,2001.
[5] 顾正飞.中国磁性材料工业的现状和展望.电工合金,1997.
[6] 王常任.磁电选矿.冶金工业出版社,1986.
[7] 邹继斌.磁路与磁场.哈尔滨工业大学出版社,1998.
[8] 李文彬.磁力应用工程.兵器工业出版社,1991.
[9] 周寿增.稀土永磁材料及其应用.冶金工业出版社,1990.
[10] 倪光正.电磁场数值计算.高等教育出版社,1996.
[11] 周克定.工程电磁场数值计算理论方法及应用.高等教育出版社,1989.
[12] 冯旭滨.国外矿用磁选设备的现状与性能分析.煤矿机械,1999.
[13] 曹志良.永磁磁选技术的新进展.金属矿山,1997.
[14] 曹志良.筒式永磁中强磁场磁选机的研制.矿冶工程,1994.
[15] 余宗周译.磁选机的发展.国外金属矿山,1997.
[16] 李小静.国内粗粒弱磁性矿石选矿设备现状与发展方向.金属矿山,2000.
[17] 胡美容译.一种新型中场强干式湿式圆筒永磁磁选机在选矿中的实际应用.国外选矿快报,1997.
[18] 吴芬明.我国磁选设备及铁矿石预选技术.冶金矿山设计与建设,1996.
[19] 王常任,郑龙熙.磁选设备的磁系设计原理.东北工学院,1984.
[20] 彭会清.湿式永磁带式强磁选机磁场分布研究.会属矿山,1997
[21] 余永富.包头稀土选矿技术进展.金属矿山,1999
[22] 孙时元.国外选矿设备手册.冶金部马鞍山矿山研究院技术情报室,1992.
[23] M 费拉等.磁选设备的发展趋式和应用进展.国内外选矿快报,1998.
[24] P·A·奥古斯多等.新型磁选机和磁分级机的改进特点.国外金属矿选矿,2001
[25] 田民波.磁性材料.清华大学出版社,2001.
[26] 陈丕璋.电磁场理论与计算.科学出版社,1986.
[27] 赵昱东.磁选设备的新发展.冶金矿山设计与建设,1998.
[28] 张田.湿式半逆流型磁选机的新改进.矿业快报,2000
[29] N·霍顿.磁选机的发展磁选机的发展.英国世界采矿设备编辑部.1997
[30] 选矿手册.冶会工业出版社.1990
[31] MARLENE MARINESCU, NICOLAE MARINESCU, K.-H. UNKELBACH, HANS-GEORG SCHNABEL. New Permanent Magnetic Separator with NdFeB Meets Theoretical Predictions. IEEE TRANSACTIONS ON MAGNETICS, VOL.25, NO.3, MAY 1989
[32] EFFICIENCY OF A SUPERCONDUCTING OGMS SEPARATOR TJANOWSKI, S. KOZAK Institute of Electrotechnics IEEE TRANSACTIONS ON MAGNETICS, VOL. 26, NO. 5, MAY 1990
[33] ASKO kankaanp(aa). High—intensity permanent magnetic separators. World Mining, 1981 (5): 62
[34] ASKO kankaanp(aa). Recent advances in magnetic separation. World Mining, 1982 (10): 98
[35] J Kopp Permanent magnetic disk separator. IEEE TRans. Mag, 1984, 20 (5): 1204
[36] Bo R, Arvidson. New high—intensity roll separator using permanents. CI M BUll, 1985(7):88
[37] M Marinescu et al. New Permanent magnetic separator with Nd-Fe-B meets theoretical predictions. IEEE Trans Mag, 1989, 25(3): 2732
[38] H D, Wasmuth and K H Unkelbach. Recent developments in magnetic separation of feebly magnetic minerals. Min Engr, 1991 (4): 825
[39] A Russell Magnetic separation: an ever more exacting science. Ind Miner, 1992(3)
[40] H D Wasmuth et al. Permos—a new medium intensity drum tyPe Permanent magnetic separator with special structure of Nd- Fe- B magnets. Les Techniques, 1992(12):68
[2] 孟庆龙,颜威利.电器数值分析.北京:机械工业出版社,1993.
[3] 冯慈璋.电磁场.高等教育出版社,1995.
[4] 王美华,吴祥林.新磁路永磁筒式磁选机的特点及应用.金属矿山,2001.
[5] 顾正飞.中国磁性材料工业的现状和展望.电工合金,1997.
[6] 王常任.磁电选矿.冶金工业出版社,1986.
[7] 邹继斌.磁路与磁场.哈尔滨工业大学出版社,1998.
[8] 李文彬.磁力应用工程.兵器工业出版社,1991.
[9] 周寿增.稀土永磁材料及其应用.冶金工业出版社,1990.
[10] 倪光正.电磁场数值计算.高等教育出版社,1996.
[11] 周克定.工程电磁场数值计算理论方法及应用.高等教育出版社,1989.
[12] 冯旭滨.国外矿用磁选设备的现状与性能分析.煤矿机械,1999.
[13] 曹志良.永磁磁选技术的新进展.金属矿山,1997.
[14] 曹志良.筒式永磁中强磁场磁选机的研制.矿冶工程,1994.
[15] 余宗周译.磁选机的发展.国外金属矿山,1997.
[16] 李小静.国内粗粒弱磁性矿石选矿设备现状与发展方向.金属矿山,2000.
[17] 胡美容译.一种新型中场强干式湿式圆筒永磁磁选机在选矿中的实际应用.国外选矿快报,1997.
[18] 吴芬明.我国磁选设备及铁矿石预选技术.冶金矿山设计与建设,1996.
[19] 王常任,郑龙熙.磁选设备的磁系设计原理.东北工学院,1984.
[20] 彭会清.湿式永磁带式强磁选机磁场分布研究.会属矿山,1997
[21] 余永富.包头稀土选矿技术进展.金属矿山,1999
[22] 孙时元.国外选矿设备手册.冶金部马鞍山矿山研究院技术情报室,1992.
[23] M 费拉等.磁选设备的发展趋式和应用进展.国内外选矿快报,1998.
[24] P·A·奥古斯多等.新型磁选机和磁分级机的改进特点.国外金属矿选矿,2001
[25] 田民波.磁性材料.清华大学出版社,2001.
[26] 陈丕璋.电磁场理论与计算.科学出版社,1986.
[27] 赵昱东.磁选设备的新发展.冶金矿山设计与建设,1998.
[28] 张田.湿式半逆流型磁选机的新改进.矿业快报,2000
[29] N·霍顿.磁选机的发展磁选机的发展.英国世界采矿设备编辑部.1997
[30] 选矿手册.冶会工业出版社.1990
[31] MARLENE MARINESCU, NICOLAE MARINESCU, K.-H. UNKELBACH, HANS-GEORG SCHNABEL. New Permanent Magnetic Separator with NdFeB Meets Theoretical Predictions. IEEE TRANSACTIONS ON MAGNETICS, VOL.25, NO.3, MAY 1989
[32] EFFICIENCY OF A SUPERCONDUCTING OGMS SEPARATOR TJANOWSKI, S. KOZAK Institute of Electrotechnics IEEE TRANSACTIONS ON MAGNETICS, VOL. 26, NO. 5, MAY 1990
[33] ASKO kankaanp(aa). High—intensity permanent magnetic separators. World Mining, 1981 (5): 62
[34] ASKO kankaanp(aa). Recent advances in magnetic separation. World Mining, 1982 (10): 98
[35] J Kopp Permanent magnetic disk separator. IEEE TRans. Mag, 1984, 20 (5): 1204
[36] Bo R, Arvidson. New high—intensity roll separator using permanents. CI M BUll, 1985(7):88
[37] M Marinescu et al. New Permanent magnetic separator with Nd-Fe-B meets theoretical predictions. IEEE Trans Mag, 1989, 25(3): 2732
[38] H D, Wasmuth and K H Unkelbach. Recent developments in magnetic separation of feebly magnetic minerals. Min Engr, 1991 (4): 825
[39] A Russell Magnetic separation: an ever more exacting science. Ind Miner, 1992(3)
[40] H D Wasmuth et al. Permos—a new medium intensity drum tyPe Permanent magnetic separator with special structure of Nd- Fe- B magnets. Les Techniques, 1992(12):68