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[1]刘庆生,程华金,谈成亮,等.非均一极距对稀土电解多相流影响的数值模拟及实验验证[J].有色金属科学与工程,2020,(05):55-60.
 LIU Qingsheng,CHENG Huajin,TAN Chengliang,et al.Numerical Simulation and Experimental Verification of the Influence of Non-Uniform Pole Pitch to Rare Earth Electrolysis Process[J].,2020,(05):55-60.
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非均一极距对稀土电解多相流影响的数值模拟及实验验证(/HTML)
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《有色金属科学与工程》[ISSN:1674-9669/CN:36-1311/TF]

卷:
期数:
2020年05期
页码:
55-60
栏目:
出版日期:
2020-10-20

文章信息/Info

Title:
Numerical Simulation and Experimental Verification of the Influence of Non-Uniform Pole Pitch to Rare Earth Electrolysis Process
作者:
刘庆生程华金1谈成亮1邱建民2李华杰3
(1江西理工大学冶金与化学工程学院,江西 赣州,341000;2赣州嘉通新材料有限公司,江西 赣州 341000;3江西离子型稀土工程技术研究有限公司,江西 赣州 341000)
Author(s):
LIU Qingsheng1 CHENG Huajin1 TAN Chengliang1 QIU Jianmin 2 LI Huajie3
(1.School of Metallurgical and Chemical Engineering, Jiangxi University of Science and Technology, Ganzhou 341000 , Jiangxi,China2.Ganzhou Jiatong New Materials Co., Ltd.Ganzhou ,341000 ,Jiangxi, China 3Jiangxi Ionic Rare Earth Engineering Research Co.Ltd.,Ganzhou ,341000 ,Jiangxi, China )
关键词:
稀土电解等距压降法非均一性极距阳极气泡
分类号:
TG146.4 文献 标志码:A
DOI:
-
文献标志码:
-
摘要:
为了研究极距非均一性对电解槽电、热、流场的影响,本文引入一个函数D表示极距的非均一性,建立了极距非均一性数学模型,模拟了非均一性极距下电场、温度场的分布规律,以及计算了非均一性极距下的流场、气泡和金属液滴的分布状况。通过研究4种不同极距非均一性D,分析可得:当D在1~1.48范围内增大时,阴极两侧极间电流分布变化逐渐不对称,发热量减小,气泡含量及紊流强度发生改变,且阴极稀土金属液在滴落的过程中,偏离电解槽中心线角度为0°~30°,但此时电解槽槽况稳定,可以落入槽底的坩埚内;当D=1.73时,偏离角度为43°,槽况恶劣,此时稀土金属便不能落入坩埚内,需要更换新阳极,以保证正常电解。本文通过等距压降法对阳极电流分布进行测量,并对比分析了实际电流测量值与模拟电流值,其计算误差为2.7%~5.6%,因此通过数值模拟可以反映出极距非均一性对阳极电流分布不均的影响,为优化实际生产中的流程操作,提高电解效率,降低能耗提供保障。

参考文献/References:

[1].SOLHEIM A, JOHANSEN S, THONSTAND J. Gas driven flows in Hall-Heroult cells[J]. J. Appl. Electrochem, 1989, 19:703-712.
[2].[2] 刘庆生,汤卫东,王建鲁,等. 稀土电解槽内阳极气泡行为的数值模拟[J]. 中国稀土学报, 2015,33(6): 737-746.
[3].[3] BILEK M M,Z HANG W D,S TEVENS F J.Modelling of electrolyte flow and its related transport processes in aluminium reduction cells[C].In:Mannweiler U,eds.Light Metals,1994.San Francisco,CA:TMS(The Minerals,Metals&Materials Society) , 1994:321-331.
[4].[4] 姜艳丽,郑奇,喻亮,等. 异型阴极结构铝电解槽热应力场仿真[J]. 有色金属(冶炼部分),2015,5:37-42.
[5].[5] 刘中兴,李扬磊,伍永福,等. 电极插入不同深度下稀土电解槽电热场耦合模拟[J]. 有色金属(冶炼部分), 2019(1):31-36.
[6].[6] 丁培林,王恒,黄俊,等. 铝电解槽下料过程对电解质温度场的影响[J]. 中国有色金属学报, 2016,26(2);430-438
[7].[7] 李贺松. 铝电解槽非稳态非均一信息模型及节能技术[M]. 北京: 冶金工业出版社, 2008
[8].[8] FENG Y Q, COOKSEY M A, SCHWARZ M P. CFD modeling of alumina mixing in aluminium reduction cells[C]//HAGNIAM. Light Metals 2010. Seattle: TMS, 2010: 451?456.
[9].[9] 伍永福, 张雪娇, 陈思琪, 等. 60 kA沉浸式稀土电解槽电场的数值模拟[J]. 有色金属(冶炼部分), 2015,(2): 31-33,38.
[10].[10] MA H H, XUE J X, LI J G,et al. Investigating current efficiency of aluminum electrolysis in NaF-KF-AlF3 system[C]// Zhang Lifeng. Materials Processing Fundamentals. Hoboken, NJ, USA, 2013 :199-206.
[11].[11] 逄启寿,张雨开,黄杰,等. 稀土电解槽不同阴极结构的电解特性分析[J]. 稀土, 2019,(5):17-23
[12].[12] RAO J P , OUYANG C Y , LEI M S ,et al. First principles investigation of interaction between interstitials H atom and Nb metal[J]. Acta Physica Sinca, 2012, 61(4), 047105: 1-5.
[13].[13] 董云芳, 冯猛, 刘中兴,等. 稀土电解槽内双电层-温度场耦合数值模拟[J]. 稀土, 2019,(2):88-94
[14].[14] 刘钊, 李宗安, 张小伟 , 等. 稀土电解槽流场的数值模拟[J]. 中国有色金属学报, 2015, (11):3209-3215
[15].[15] GUPTA R K,NAYAN N,NAGASIREESHA G,SHARMA S C. Development and characterization of Al–Li alloys[J]. Materials Science & Engineering A . 2006 ,420(1-2):228-234
[16].[16] 刘冬福, 唐忠阳, 何利华,等. 盐湖提锂膜堆电解槽流体水力学和数值模拟[J]. 中国有色金属学报, 2019,(2):388-395
[17].[17] ZHAN S Q, LI M Z, JIE M,et al. CFD simulation of effect of anode configuration on gas–liquid flow and alumina transport process in an aluminum reduction cell[J]. Journal of Central South University, 2015,(7):2482-2492
[18].[18] ZHAO C Y. Review on thermal transport in high porosity cellular metal foams with open cells [J]. International Journal of Heat and Mass Transfer, 2012, 55(13/14): 3618-3632
[19].[19] KRISTIAN E E. The Effect of Detaching Bubbles on Aluminum-Cryolite Interfaces: An Experimental and Numerical Investigation[J]. Metallurgical and Materials Transactions B , 2010 ,41(3):560-573
[20].[20] XU H B,HAN Q Y, THOMAS T. Meek. Effects of ultrasonic vibration on degassing of aluminum alloys[J]. Materials Science & Engineering A , 2008,473(1-2):96-104

相似文献/References:

[1]刘庆生,程华金,谈成亮,等.非均一极距对稀土电解多相流影响的数值模拟及实验验证[J].有色金属科学与工程,2020,(05):59.[doi:10.13264/j.cnki.ysjskx.2020.05.009]
 LIU Qingsheng,CHENG Huajin,TAN Chengliang,et al.Numerical simulation and experimental verification of the influence of non-uniform pole pitch to rare earth electrolysis process[J].,2020,(05):59.[doi:10.13264/j.cnki.ysjskx.2020.05.009]

备注/Memo

备注/Memo:
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更新日期/Last Update: 2020-09-18