Effect of magnetic field gradients force on copper electrorefining under intense magnetic field

被引：0
|
作者：
Yao X.-Y. [1 ]
Zhao Y.-Y. [1 ]
Lu X.-W. [1 ]
Wang J.-H. [2 ]
Niu Y.-S. [1 ]
Chen L. [1 ]
Li Y.-L. [1 ]
机构：
[1] Key Laboratory of New Process for Non-ferrous Metal Smelting and Rare Metal High Utilization Efficiency in Gansu Province, Northwest Research Institute of Mining and Metallurgy, Baiyin
[2] Baiyin Nonferrous Group Co., Ltd., Baiyin
来源：
Yao, Xia-Yan (1141557523@qq.com) | 1600年 / Central South University of Technology卷 / 30期
关键词：
Copper electrolysis; Energy; self purification; Magnetic field gradient force; Metal materials;
D O I：
10.11817/j.ysxb.1004.0609.2020-37686
中图分类号：
学科分类号：
摘要：
The diffusion property of Cu2+ and the concentration of impurity ions are the key factors affecting the quality of cathode copper. The horizontal oriented magnetic field is installed on the circulating water pipeline in this paper to improve the quality of cathode copper by regulating the diffusion property of Cu2+ and strengthen the self purification process of copper electrolysis. From the perspective of magnetic separation and the influence of magnetic field on water clusters and ion hydration, the experiment of magnetizing copper electrolyte with horizontal orientation magnetic field was carried out. The effects of magnetic field gradient force on the concentration of cupric acid, impurity ion, viscosity, surface tension and the apparent quality of cathode copper were studied by flame atomic absorption spectrophotometry, viscometer, capillary tube and scanning electron microscope, and the mechanism of strengthening copper electrolysis process by horizontal orientation magnetic field was analyzed. The results show that the magnetic field gradient force can enlarge the magnetic energy of diamagnetic ions and water molecules in copper electrolyte, reduce the degree of hydrogen bond association of water molecules and the activation energy of electrolysis system, accelerate the reaction of copper electrolysis and the precipitation of SbAsO4, BiAsO4 and AsSbO4, increase the solubility of dissolved oxygen and CaSO4, so it can promote the formation of oxide protective film on the surface of Ni, Fe and Zn, improve the clarity of electrolyte and increase cathode production. On the other hand, the magnetic field gradient force can reduce the magnetic energy of paramagnetic ions, regulate the dissolution of anode and the precipitation of cathode copper, reduce copper loss and improve the apparent quality of cathode copper. At the same time, the magnetic field gradient force can reduce the surface tension of the electrolyte. As a result, the number of bubbles in the electrolyte increases and the pores form on the surface of copper cathode. To sum up, there is an optimum magnetic field intensity when the horizontal orientation magnetic field acts on the copper electrolysis process. © 2020, Science Press. All right reserved.
引用
收藏
页码：2695 / 2705
页数：10
相关论文
共 32 条
  • [1] YAO Xia-yan, WANG Jun-hui, YU Jiang-hong, LU Xing-wu, LI Yan-long, JIAO Xiao-bin, Mechanism discussion and verification of improving cathode copper quality by magnetic field synergy, China Nonferrous Metallurgy, 48, 3, pp. 14-18, (2019)
  • [2] MITRA A, MALLIK M, SENGUPTA S, BANTHIA S, DAS K, DAS S., Effect of anodic passivation at high applied potential difference on the crystal shape and morphology of copper electrodeposits: thermodynamics and kinetics of electrocrystallization, Crystal Growth & Design, 17, 4, pp. 1539-1549, (2017)
  • [3] KIVILUOMA M, AALTONEN M, AROMAA J, LUNDSTROM M, FORSEN O., Development of characterization methods for adherent anode slimes in copper electrorefining, Physicochemical Problems of Mineral Processing, 52, 1, pp. 295-302, (2016)
  • [4] KALLIOMAKI T, WILSON B P, AROMAA J, LUNDSTROM M., Diffusion coefficient of cupric ion in a copper electrorefining electrolyte containing nickel and arsenic, Minerals Engineering, 134, pp. 381-389, (2019)
  • [5] PENG Ying-lin, ZHENG Ya-jie, CHEN Wen-mi, The oxidation of arsenic from As(Ⅲ) to As(Ⅴ) during copper electrorefining, Hydrometallurgy, 129, 130, pp. 156-160, (2012)
  • [6] ZHANG Wang-bing, YANG Xin-an, DONG Yong-ping, CHU Xiang-feng, Application of alkaline mode electrochemical hydride generation for the detection of As and Sb using atomic fluorescence spectrometry, Spectrochimica Acta Part B: Atomic Spectroscopy, 65, 7, pp. 571-578, (2010)
  • [7] HISKEY J B., Mechanism and thermodynamics of floating slimes formation, Proceedings of T.T. Chen Honorary Symposium on Hydrometallurgy, Electrometallurgy and Materials Characterization, pp. 101-112, (2012)
  • [8] SAFIZADEH F, GHALI E., Monitoring passivation of Cu-Sb and Cu-Pb anodes during electrorefining employing electrochemical noise analyses, Electrochimica Acta, 56, 1, pp. 93-101, (2011)
  • [9] ZENG Wei-zhi, WANG Shi-jie, MICHAEL L F., Two-phase flow modeling of copper electrorefining involving impurity particles, Journal of The Electrochemical Society, 164, 9, pp. 233-241, (2017)
  • [10] YANG Jian-guang, LIU Shan, ZENG Wei-zhi, LI Bo, LI Ken, HU Hui, DING Wen-jie, Experimental analysis of the performance of innovative circulation configurations for cleaner copper electrolysis, Hydrometallurgy, 189, pp. 105-145, (2019)
1234