摘要
用磁场的协同作用改善Cu2+的扩散性能和强化铜电解的自净化过程,使阴极铜的质量提高。从离子磁性和离子水合作用的角度,进行不同流速下强磁场磁化铜电解液的实验,研究了洛伦兹力和磁场梯度力对Cu2+扩散性能、杂质离子浓度和阴极铜表观质量的影响,分析了垂直取向磁场和水平取向磁场强化铜电解的机理。结果表明:磁场能强化对流、减弱氢键缔合程度、降低离子水合作用、提高体系能量、促进Cu2+扩散性能和砷锑铋等杂质离子的沉降速度,从而提高电解液的清晰度和增强阴极铜表观质量;但是,磁场增加微气泡和溶解氧量并随着循环流速的提高而增大,使电解液表面张力增大而导致磁场的协同作用失效。在磁化铜电解过程中,存在一个提高阴极铜质量的最佳循环流速。
In order to improve the quality of cathode copper, the intense magnetic field was used to enhance the diffusion of Cu2+ and the self-purification process of copper electrolysis. From the point of view of ionic magnetism and ionic hydration, experiments on magnetized copper electrolysis at different flow velocity were carried out. The effect of Lorentz force and magnetic field gradient force on the diffusion properties, impurity ion concentration and apparent quality of cathode copper was investigated. The mechanism of copper electrolysis strengthened by vertical orientation magnetic field and horizontal orientation magnetic field was respectively analyzed. Results show that magnetic field can strengthen the convection, weaken the hydrogen bonding, reduce the ion hydration and increase the energy of the system.Besides, the diffusion of Cu2+ and the deposition rate of impurity ions such as As, Sb and Bi were also increased, which could improve the clarity of electrolyte and the apparent quality of cathode copper. On the other hand, the dissolved oxygen, microbubbles and surface tension of electrolyte increased with the increase of cyclical flow velocity, so leading to the failure of magnetic field synergy. There is an optimum cyclical velocity to improve the quality of cathode copper in the process of magnetized copper electrolysis.
作者
姚夏妍
赵芸芸
王军辉
牛永胜
鲁兴武
YAO Xiayan;ZHAO Yunyun;WANG Junhui;NIU Yongsheng;LU Xingwu(Northwest Research Institute of Mining and Metallurgy,Key Laboratory of New Process for Non-ferrous Metal Smelting and Rare Metal High Utilization Efficiency in Gansu Province,Baiyin 730900,China;Baiyin Nonferrous Group Co.Ltd.,Baiyin 730900,China)
出处
《材料研究学报》
EI
CAS
CSCD
北大核心
2020年第5期392-400,共9页
Chinese Journal of Materials Research
基金
甘肃省工业绿色低碳转型升级研究课题(GGLD-2019-28)
白银市2019年科技计划(2019-1-12G)。
关键词
金属材料
磁化电解
强磁场
铜电解
阴极铜
metallic materials
magnetized electrolysis
intense magnetic field
copper electrolysis
cathode copper
