Magnetic field analysis of magnetic system of magnetic cyclone

doi:10.16085/j.issn.1000-6613.2018-1635

Abstract

Abstract:

A magnetic cyclone was designed for the central adsorption of iron. The magnetic field strength and separation performance of the magnetic cyclone were compared and analyzed by means of experimention and numerical simulation. In the experiment, the magnetic structure of the magnetic cyclone was simplified, the thickness of the magnetically conductive iron sheet, the core structure and the magnetic system structure were changed, and the adsorption capacity of the magnetic system on the iron containing compounds was analyzed. The magnetic field intensity of the magnetic system was obtained by numerical simulation, which provides a basis for the prediction of separation capacity. The results showed that the magnetic field strength is inversely proportional to the thickness of the magnetically conductive iron sheet. With the increase of the thickness of the magnetic field, the magnetic field strength decreases, and the adsorption capacity of the magnetic particle is weakened. The separation effect is best when the thickness of the guide magnet is 2mm in the test. The squeezed magnetic system has greater magnetic field strength than the common magnetic system. The increase of the thickness of the magnetic iron sheet will reduce the magnetic flux leakage at the end of the magnetic system and increase the magnetic leakage on the side of the core. The magnetic flux leakage of the magnetic core of the iron bar core is relatively small, and the leakage flux of the squeezed magnetic system is relatively small.

Key words: magnetic hydrocyclone, magnetic system, numerical simulation, separation, recovery

摘要：

设计了一种中心吸附铁化合物的磁力旋流器，利用试验和数值模拟的方法，对比分析了磁力旋流器磁场强度和分离性能。在试验中，简化了磁力旋流器磁系的结构，改变导磁铁片厚度、铁芯结构、磁系结构等参数，分析磁系对含铁化合物的吸附能力。利用数值模拟方法得到磁系的磁场强度，为分离能力预测提供依据。结果表明：磁场强度与导磁铁片的厚度成反比，随着导磁铁片厚度增大，磁场强度减小，磁力旋流器对铁化合物颗粒的吸附能力减弱，试验中导磁铁片的厚度为2mm时分离效果最好；铁棒铁芯磁系与铁管铁芯磁系相比具有更大的磁场强度；挤压式磁系与普通磁系相比具有更大的磁场强度。导磁铁片厚度的增大会使磁系端面漏磁量减少，铁芯侧面漏磁量增大；铁棒铁芯磁系的漏磁量相对较小，挤压式磁系的漏磁相对较小。

关键词: 磁力旋流器, 磁系, 数值模拟, 分离, 回收

CLC Number:

TQ051.8

Shuangcheng FU, Junxian JIA, Yalei ZHANG, Huixin YUAN. Magnetic field analysis of magnetic system of magnetic cyclone[J]. Chemical Industry and Engineering Progress, 2019, 38(05): 2150-2157.

付双成, 贾俊贤, 张亚磊, 袁惠新. 磁力旋流器磁系的磁场分析[J]. 化工进展, 2019, 38(05): 2150-2157.

Figures/Tables 18

References 23

1	FREEMAN R J ， ROWSON N A ， VEASEY T J ， et al . The progress of the magnetic hydrocyclone[J]. Magnetic & Electrical Separation，1993，4(3)：139-149.
2	PREMARATNE W A P J ， ROWSON N A . The processing of beach sand from Sri Lanka for titanium using magnetic separation[J]. Magnetic and Electrical Separation,2003，12(1)：13-22.
3	郭娜娜，李茂林，崔瑞，等 . 溢流型磁力旋流器径向磁场分析[J]. 矿冶工程， 2013，33(5)：59-62.
	GUO Nana ， LI Maolin ， CUI Rui ，et al . Radial magnetic field analysis of overflow magnetic cyclone [J]. Mining and Metallurgical Engineering，2013，33 (5)：59-62.
4	SVOBODA J ，俞成 . 磁力旋流器在重介质选别中应用的试验研究[J]. 现代矿业，1999，25(1)：557-562.
	SVOBODA J ， YU Cheng . Experimental study on the application of magnetic cyclone in heavy media separation[J]. Modern Mining，1999，25(1)：557-562.
5	樊盼盼，孔令帅，彭海涛，等 . 置于锥部的轴向电磁场对重介旋流器分选效果的影响[J]. 煤炭学报，2015，40(7)：1615-1621.
	FAN Panpan ， KONG Lingshuai ， PENG Haitao ， et al . The effect of the axial electromagnetic field placed in the cone on the separation effect of the heavy medium cyclone [J]. Journal of China Coal Society，2015，40 (7)：1615-1621.
6	SUBA J ， STYRIAKOVA D . Iron minerals removal from different quartz sands [J]. Procedia Earth & Planetary Science，2015，15：849-854.
7	张婷婷，任东风，侯军发，等 . 海相沉积型天然石英砂生产超白砂的工艺研究[J]. 建材世界，2012，33(4)：48-51.
	ZHANG Tingting ， REN Dongfeng ， HOU Junfa , et al . Study on the technology of producing super-white sand from marine sedimentary natural quartz sand [J]. The World of Building Materials，2012，33 (4)：48-51.
8	吴基球，李红敏，李竟先 . 陶瓷原料的除铁增白方法[J]. 陶瓷，2007(1)：25-27.
	WU Jiqiu ， LI Hongmin ， LI Jingxian . Iron and whitening methods for ceramic raw materials, [J]. Ceramics，2007 (1)：25-27.
9	胡琳，程安运，李积彬，等 . 磁力液力旋流器在电火花加工工作液处理装置中的应用研究[J]. 电加工与模具，2002，5(10)：44-46.
	HU Lin ， CHENG Anyun ， LI Jibin ，et al . Application of magnetic fluid hydrocyclone in the working liquid treatment device of EDM [J].Electromachining & Mould，2002，5 (10)：44-46.
10	郭娜娜 . 溢流型磁力旋流器的磁场模拟及试验研究[D]. 武汉：武汉科技大学，2014.
	GUO Nana . Magnetic field simulation and experimental study of overflow type magnetic hydrocyclone [D]. Wuhan:Wuhan University of Science and Technology，2014.
11	梁政 . 固液分离水力旋流器流场理论研究[M]. 北京：石油工业出版社，2011.
	LIANG Zheng . Theoretical study on the flow field of solid-liquid separation hydrocyclone [M]. Beijing: Petroleum Industry Press，2011.
12	袁惠新，方勇，付双成, 等 . 旋流器的微米级颗粒分级性能分析[J]. 化工进展，2017，36(12)：4371-4377.
	YUAN Huixin ， FANG Yong ， FU Shuangcheng ，et al . Performance analysis of micron-grade particle classification of cyclone [J]. Chemical Industry and Engineering Progress，2017，36 (12)：4371-4377.
13	肖祖峰，陈明东，韩光泽 . 电磁场作用下的强化传质研究进展[J]. 化工进展，2008，27(12)：1911-1916.
	XIAO Zufeng ， CHEN Mingdong ， HAN Guangze . Advances in enhanced mass transfer under electromagnetic field[J]. Chemical Industry and Engineering Progress，2008，27 (12)：1911-1916.
14	HATCH G P ， STELTER R E . Magnetic design considerations for devices and particles used for biological high-gradient magnetic separation (HGMS) systems[J]. Journal of Magnetism & Magnetic Materials，2001，225(1)：262-276.
15	王常任，孙仲元，郑龙熙 . 磁选设备磁系设计基础[M]. 北京：冶金工业出版社，1990.
	WANG Changren ， SUN Zhongyuan ， ZHENG Longxi . Magnetic system design basis of magnetic separation equipment [M].Beijing: Metallurgical Industry Press，1990.
16	REN Liuyi ， ZENG Shanglin ， ZHANG Yimin . Magnetic field characteristics analysis of a single assembled magnetic medium using ANSYS software[J]. International Journal of Mining Science and Technology，2015, 25(3)：479-487.
17	柴金荣，葛凤，孙星 . 基于ANSYS的磁选机磁系组装过程的磁场计算与分析[J]. 煤矿机械，2015，36(4)：300-301.
	CHAI Jinrong ， GE Feng ， SUN Xing . Calculation and analysis of magnetic field in magnetic separator assembly process based on ANSYS[J]. Coal Mine Machinery，2015，36(4)：300-301.
18	王金刚 . 纳米磁性流体密封磁场的数值仿真和实验验证[J]. 化工进展，2006，25(8)：963-967.
	WANG Jingang . Numerical simulation and experimental verification of magnetic field of nano magnetic fluid seals [J]. Chemical Industry and Engineering Progress，2006，25 (8)：963-967.
19	姜昌伟，梅炽，周乃君，等 . 用标量电位法与双标量磁位法计算铝电解槽三维磁场[J]. 中国有色金属学报，2003，13(4)：1021-1025.
	JIANG Changwei ， MEI Zhi ， ZHOU Naijun ，et al . The calculation of three dimensional magnetic field of aluminum electrolysis cell [J]. The Chinese Journal of Nonferrous Metals，2003，13(4)：1021-1025.
20	MAYERGOGOYZ I ， CHARI M ， ANGELO J D . A new scalar potential formulation for three-dimensional magnetostatic problems[J]. IEEE Transactions on Magnetics，1987，23(6)：3889-3894.
21	RODRIGUEZ Ana Alonso， Enrico BERTOLAZZI ， Riccardo GHILONI ，et al . Finite element simulation of eddy current problems using magnetic scalar potentials[J]. Journal of Computational Physics，2015，1(8)：503-523.
22	SAITO T . Magnetic shielding effect from multiple configurations of open-type magnetic shielding walls compared to solid plates[J]. Journal of Magnetism & Magnetic Materials，2010，322(9)：1540-1543.
23	冉红想，王芝伟，魏红港 . RTGX型永磁强磁选机在弱磁性铁矿石预选中的应用[J]. 矿冶，2015， 24(b11)：23-25.
	RAN Hongxiang ， WANG Zhiwei ， WEI Honggang . Application of RTGX type permanent magnet high intensity magnetic separator in the preconcentration of weak magnetic iron ore[J]. Mine and Metallurgy，2015，24(b11)：23-25.

试验内容	铁棒	铁管	导磁铁片	线圈	直流电源	铁化合物颗粒
导磁铁片厚度试验	?15mm		?38mm×15mm×2mm ?38mm×15mm×4mm ?38mm×15mm×6mm ?38mm×15mm×8mm ?38mm×15mm×10mm	N=1856	型号：ZBK-350D 试验电流为0.2A	D ₅₀=13μm
导磁铁片厚度试验	?15mm					D ₅₀=13μm

铁芯结构试验	?19mm	?19mm×2mm	?66mm×19mm×2mm	N=5625
磁系结构试验	?15mm		?38mm×15mm×2mm	N=1856

试验内容	铁棒	铁管	导磁铁片	线圈	直流电源	铁化合物颗粒
导磁铁片厚度试验	?15mm		?38mm×15mm×2mm ?38mm×15mm×4mm ?38mm×15mm×6mm ?38mm×15mm×8mm ?38mm×15mm×10mm	N=1856	型号：ZBK-350D 试验电流为0.2A	D ₅₀=13μm
导磁铁片厚度试验	?15mm					D ₅₀=13μm

铁芯结构试验	?19mm	?19mm×2mm	?66mm×19mm×2mm	N=5625
磁系结构试验	?15mm		?38mm×15mm×2mm	N=1856

L/mm	m/g	L/mm	m/g
2	6.335	8	1.628
4	5.177	10	0.256
6	3.374

L/mm	m/g	L/mm	m/g
2	6.335	8	1.628
4	5.177	10	0.256
6	3.374

磁系	m/g
铁管磁系	9.786
铁棒磁系	15.036