Citation: JIANG Liang-Xing, ZHONG Shui-Ping, LAI Yan-Qing, LV Xiao-Jun, HONG Bo, PENG Hong-Jian, ZHOU Xiang-Yang, LI Jie, LIU Ye-Xiang. Effect of Current Densities on the Electrochemical Behavior of a Flat Plate Pb-Ag Anode for Zinc Electrowinning[J]. Acta Physico-Chimica Sinica, ;2010, 26(09): 2369-2374. doi: 10.3866/PKU.WHXB20100935 shu

Effect of Current Densities on the Electrochemical Behavior of a Flat Plate Pb-Ag Anode for Zinc Electrowinning

1.
1. School of Metallurgical Science and Engineering, Central South University, Changsha 410083, P. R. China;
2. Zijin Mining Group Co., Ltd., Shanghang 364200, Fujian Province, P. R. China

Received Date: 12 April 2010
Available Online: 27 July 2010
Fund Project: 国家自然科学基金(50954006)资助项目 (50954006)

We studied the anodic potential, corrosion rate, and anodic passive layer of a flat plate Pb-Ag (0.8% (mass fraction, w) anode over a long period of polarization under different current densities. Additionally, the cathode current efficiency and quality of the zinc product in the ZnSO₄-MnSO₄-H₂SO₄ electrolyte were also studied. The morphology of the anodic passive layer was characterized by scanning electron microscopy (SEM). The results show that the current density greatly affects the electrochemical behavior of the anode and the cathode during zinc electrowinning irrespective of Mn²⁺. With an increase in the current density, the anodic potential, corrosion rate, cathode current efficiency, and quantity of anode slime increased while the Pb content in the zinc product decreased. When the current density decreased from 500 to 200 A·m^-2 in the ZnSO₄-MnSO₄-H₂SO₄ electrolyte, the stable anodic potential and the corrosion rate decreased by 64 mV and 40%, respectively. Under a lower current density, the anodic potential stabilizes more easily and the passive layer that forms on the surface of the anode is denser and it adheres better to the base body, which is advantageous for the reduction of the corrosion rate. Therefore, to reduce the anodic potential, corrosion rate, and the quantity of anode slime, increase the cathode current efficiency and quality of zinc product, we suggested that the ideal working condition for zinc electrowinning is a higher cathodic current density and lower anodic current density.
- Zinc electrowinning,
- Current density,
- Pb-Ag anode,
- Anodic potential,
- Corrosion rate
1. [1]
  
  1. Petrova, M.; Stefanov, Y.; Noncheva, Z.; Dobrev, T.; Rashkov, S.British Corrosion Journal, 1999, 34(3): 198
2. [2]
  2. Stefanov, Y.; Dobrev, T. Transactions of the Institute of MetalFinishing, 2005, 83(6): 296
3. [3]
  3. Ivanov, I.; Stefanov, Y.; Noncheva, Z.; Petrova, M.; Dobrev, T.;Mirkova, L.; Vermeersch, R.; Demaerel, J. P. Hydrometallurgy,2000, 57: 109
4. [4]
  4. Rashkov, S.; Dobrev, T.; Noncheva, Z.; Stefanov, Y.; Rashkova,B.; Petrova, M. Hydrometallurgy, 1999, 52: 223
5. [5]
  5. Newnham, R. H. Journal of Applied Electrochemistry, 1992, 22:116
6. [6]
  6. Zhong, S. P.; Lai, Y. Q.; Jiang, L. X.; Lü, X. J.; Chen, P. R.; Li, J.;Liu, Y. X. Journal of Central South University of Technology,2009, 16(2): 236
7. [7]
  7. Lupi, C.; Pilone, D. Hydrometallurgy, 1997, 44: 347
8. [8]
  8. Rashkov, S.; Stefanov, Y.; Noncheva, Z.; Petrova, M.; Dobrev, T.;Kunchev, N.; Petrov, D.; Vlaev, S. T.; Mihnev, V.; Zarev, S.;Georgieva, L.; Buttinelli, D. Hydrometallurgy, 1996, 40: 319
9. [9]
  9. Camurri, C. P.; López, M. J.; Pagliero, A. N.; Vergara, F. G.Materials Characterization, 2001, 47: 105
10. [10]
  10. Li, B. S.; Lin, A.; Gan, F. X. Trans. Nonferrous Met. Soc. China,2006, 16(5): 1193
11. [11]
  11. Hu, J. M.; Zhang, J. Q.; Cao, C. N. International Journal ofHydrogen Energy, 2004, 29(8): 791
12. [12]
  12. Stefanov, Y.; Dobrev, T. Transactions of the Institute of MetalFinishing, 2005, 83(6): 291
13. [13]
  13. Cattarin, S.; Guerriero, P.; Musiani, M. Electrochimica Acta, 2001,46: 4229
14. [14]
  14. Shrivastava, P.; Moats, M. S. Journal of the ElectrochemicalSociety, 2008, 155(7): E101
15. [15]
  15. de Mussy, J. P. G.; MacPherson, J. V.; Delplancke, J. L.Electrochimica Acta, 2003, 48: 1131
16. [16]
  16. Felder, A.; Prengaman R. D. JOM, 2006, 58(10): 28
17. [17]
  17. Zhong, S. P.; Lai, Y. Q.; Jiang, L. X.; Lü, X. J.; Chen, P. R.; Li, J.;Liu, Y. X. Journal of Central South University of Technology,2008, 15(6): 757
18. [18]
  18. Lai, Y. Q.; Jiang, L. X.; Li, J.; Zhong, S. P.; Lü, X. J.; Peng, H. J.;Liu, Y. X. Hydrometallurgy, 2010, 102: 73
19. [19]
  19. Lai, Y. Q.; Jiang, L. X.; Li, J.; Zhong, S. P.; Lü, X. J.; Peng, H. J.;Liu, Y. X. Hydrometallurgy, 2010, 102: 81
20. [20]
  20. Peng, R. Q.; Ren, H. J.; Zhang, X. P. Metallurgy of lead and zinc.Beijing: Science Press, 2003: 413 [彭容秋, 任鸿九,张训鹏.铅锌冶金学.北京:科学出版社, 2003: 413]
21. [21]
  21. Mei, G. G.; Wang, R. D.; Zhou, J. Y.; Wang, H. Hyrometallurgy ofzinc. Changsha: Central South University Press, 2001: 340-402[梅光贵,王德润, 周敬元, 王辉.湿法炼锌学,长沙:中南大学出版社, 2001: 340-402]
22. [22]
  22. Zhang, Y. P. Hydrometallurgy of China, 2001, 20(4): 169[张玉萍.湿法冶金, 2001, 20(4): 169]
23. [23]
  23. Ivanov, I.; Stefanov, Y.; Noncheva, Z.; Petrova, M.; Dobrev, T.;Mirkova, L.; Vermeersch, R.; Demaerel, J. P. Hydrometallurgy,2000, 57: 125
24. [24]
  24. Nguyen, T.; Atrens, A. Hydrometallurgy, 2009, 96: 14
25. [25]
  25. Pu, Y.; O'Keefe, T. J. Journal of the Electrochemical Society,2002, 149(5): 558
1. [1]
  Zizheng LU , Wanyi SU , Qin SHI , Honghui PAN , Chuanqi ZHAO , Chengfeng HUANG , Jinguo PENG . Surface state behavior of W doped BiVO₄ photoanode for ciprofloxacin degradation. Chinese Journal of Inorganic Chemistry, 2024, 40(3): 591-600. doi: 10.11862/CJIC.20230225
2. [2]
  Kun Li , Na Gao , Shuangyan Huan , Yuzhi Wang . Design of Ideological and Political Education for the Experiment of Detecting Cadmium with Anodic Stripping Voltammetry. University Chemistry, 2024, 39(2): 155-161. doi: 10.3866/PKU.DXHX202307068
3. [3]
  Xiufang Wang , Donglin Zhao , Kehua Zhang , Xiaojie Song . “Preparation of Carbon Nanotube/SnS₂ Photoanode Materials”: A Comprehensive University Chemistry Experiment. University Chemistry, 2024, 39(4): 157-162. doi: 10.3866/PKU.DXHX202308025
4. [4]
  Jiaxin Su , Jiaqi Zhang , Shuming Chai , Yankun Wang , Sibo Wang , Yuanxing Fang . Optimizing Poly(heptazine imide) Photoanodes Using Binary Molten Salt Synthesis for Water Oxidation Reaction. Acta Physico-Chimica Sinica, 2024, 40(12): 2408012-. doi: 10.3866/PKU.WHXB202408012
5. [5]
  Mingxin LU , Liyang ZHOU , Xiaoyu XU , Xiaoying FENG , Hui WANG , Bin YAN , Jie XU , Chao CHEN , Hui MEI , Feng GAO . Preparation of La-doped lead-based piezoelectric ceramics with both high electrical strain and Curie temperature. Chinese Journal of Inorganic Chemistry, 2025, 41(2): 329-338. doi: 10.11862/CJIC.20240206
6. [6]
  Lu XU , Chengyu ZHANG , Wenjuan JI , Haiying YANG , Yunlong FU . Zinc metal-organic framework with high-density free carboxyl oxygen functionalized pore walls for targeted electrochemical sensing of paracetamol. Chinese Journal of Inorganic Chemistry, 2024, 40(5): 907-918. doi: 10.11862/CJIC.20230431
7. [7]
  Tong Zhou , Jun Li , Zitian Wen , Yitian Chen , Hailing Li , Zhonghong Gao , Wenyun Wang , Fang Liu , Qing Feng , Zhen Li , Jinyi Yang , Min Liu , Wei Qi . Experiment Improvement of “Redox Reaction and Electrode Potential” Based on the New Medical Concept. University Chemistry, 2024, 39(8): 276-281. doi: 10.3866/PKU.DXHX202401005
8. [8]
  Xinghai Li , Zhisen Wu , Lijing Zhang , Shengyang Tao . Machine Learning Enables the Prediction of Amide Bond Synthesis Based on Small Datasets. Acta Physico-Chimica Sinica, 2025, 41(2): 100010-. doi: 10.3866/PKU.WHXB202309041
9. [9]
  Hong Wu , Yuxi Wang , Hongyan Feng , Xiaokui Wang , Bangkun Jin , Xuan Lei , Qianghua Wu , Hongchun Li . Application of Computational Chemistry in the Determination of Magnetic Susceptibility of Metal Complexes. University Chemistry, 2025, 40(3): 116-123. doi: 10.12461/PKU.DXHX202405141
10. [10]
  Ping Ye , Lingshuang Qin , Mengyao He , Fangfang Wu , Zengye Chen , Mingxing Liang , Libo Deng . 荷叶衍生多孔碳的零电荷电位调节实现废水中电化学捕集镉离子. Acta Physico-Chimica Sinica, 2025, 41(3): 2311032-. doi: 10.3866/PKU.WHXB202311032
11. [11]
  Yong Zhou , Jia Guo , Yun Xiong , Luying He , Hui Li . Comprehensive Teaching Experiment on Electrochemical Corrosion in Galvanic Cell for Chemical Safety and Environmental Protection Course. University Chemistry, 2024, 39(7): 330-336. doi: 10.3866/PKU.DXHX202310109
12. [12]
  Bo YANG , Gongxuan LÜ , Jiantai MA . Corrosion inhibition of nickel-cobalt-phosphide in water by coating TiO₂ layer. Chinese Journal of Inorganic Chemistry, 2025, 41(2): 365-384. doi: 10.11862/CJIC.20240063
13. [13]
  Shuyong Zhang , Shu'e Song . Ideological and Political Case Design of Experiment of Corrosion and Protection Linking with National Major Projects. University Chemistry, 2024, 39(2): 57-60. doi: 10.3866/PKU.DXHX202304078
14. [14]
  Li Jiang , Changzheng Chen , Yang Su , Hao Song , Yanmao Dong , Yan Yuan , Li Li . Electrochemical Synthesis of Polyaniline and Its Anticorrosive Application: Improvement and Innovative Design of the “Chemical Synthesis of Polyaniline” Experiment. University Chemistry, 2024, 39(3): 336-344. doi: 10.3866/PKU.DXHX202309002
15. [15]
  Lei Shi . Nucleophilicity and Electrophilicity of Radicals. University Chemistry, 2024, 39(11): 131-135. doi: 10.3866/PKU.DXHX202402018
16. [16]
  Xue Dong , Xiaofu Sun , Shuaiqiang Jia , Shitao Han , Dawei Zhou , Ting Yao , Min Wang , Minghui Fang , Haihong Wu , Buxing Han . 碳修饰的铜催化剂实现安培级电流电化学还原CO₂制C₂₊产物. Acta Physico-Chimica Sinica, 2025, 41(3): 2404012-. doi: 10.3866/PKU.WHXB202404012
17. [17]
  Meifeng Zhu , Jin Cheng , Kai Huang , Cheng Lian , Shouhong Xu , Honglai Liu . Classical Density Functional Theory for Understanding Electrochemical Interface. University Chemistry, 2025, 40(3): 148-152. doi: 10.12461/PKU.DXHX202405166
18. [18]
  Yanhui XUE , Shaofei CHAO , Man XU , Qiong WU , Fufa WU , Sufyan Javed Muhammad . Construction of high energy density hexagonal hole MXene aqueous supercapacitor by vacancy defect control strategy. Chinese Journal of Inorganic Chemistry, 2024, 40(9): 1640-1652. doi: 10.11862/CJIC.20240183
19. [19]
  Qiqi Li , Su Zhang , Yuting Jiang , Linna Zhu , Nannan Guo , Jing Zhang , Yutong Li , Tong Wei , Zhuangjun Fan . 前驱体机械压实制备高密度活性炭及其致密电容储能性能. Acta Physico-Chimica Sinica, 2025, 41(3): 2406009-. doi: 10.3866/PKU.WHXB202406009
20. [20]
  Wenqi Gao , Xiaoyan Fan , Feixiang Wang , Zhuojun Fu , Jing Zhang , Enlai Hu , Peijun Gong . Exploring Nernst Equation Factors and Applications of Solid Zinc-Air Battery. University Chemistry, 2024, 39(5): 98-107. doi: 10.3866/PKU.DXHX202310026

Get Citation

PDF

XML

Metrics

PDF Downloads(1472)
Abstract views(3072)
HTML views(21)

通讯作者: 陈斌, bchen63@163.com

1.
沈阳化工大学材料科学与工程学院沈阳 110142