Simulation of Bubble Dynamics and Electrolyte Flow in Rare Earth Electrolysis Cell with Horizontal Electrode  

水平电极稀土电解槽阳极气泡动力学及电解液流动数值模拟

作　　者：Liu Hang Yang Chaoyun Zhang Yao Luan Yikun Li Dianzhong 刘航;杨超云;张耀;栾义坤;李殿中(中国科学院金属研究所沈阳材料科学国家研究中心,辽宁沈阳110016;中国科学技术大学材料科学与工程学院,辽宁沈阳110016;包头天石稀土新材料有限责任公司,内蒙古包头014060)

机构地区：[1]Shenyang National Laboratory for Materials Science,Institute of Metal Research,Chinese Academy of Sciences,Shenyang 110016,China [2]School of Materials Science and Engineering,University of Science and Technology of China,Shenyang 110016,China [3]Baotou Skyrock Rare Earth New Material Co.,Ltd,Baotou 014060,China

出　　处：《稀有金属材料与工程》2024年第12期3291-3298,共8页Rare Metal Materials and Engineering

基　　金：National Natural Science Foundation of China(52101165);Inner Mongolia Science and Technology Major Project(2020ZD0010);Key Research Program of the Chinese Academy of Sciences(ZDRW-CN-2021-3)。

摘　　要：A 2D transient mathematical model was established to separately describe the anode bubble dynamics and the bubbleinduced electrolyte motion in the rare earth electrolysis cell with horizontal electrode.Results indicate that with the increase in the anode inclined angle,the maximum bubble thickness is increased gradually.Furthermore,compared with the conventional anode,the inclined and chamfered anodes are conductive to the bubble length reduction and the bubble velocity improvement.Meanwhile,the bubble-induced electrolyte motion in the electrolysis cell can improve the distribution and transport process of oxyfluorides,thereby enhancing the current efficiency.Finally,a novel feeding method based on the electrolyte flow is proposed.建立了一个二维瞬态数学模型,分别描述了水平电极稀土电解槽中阳极气泡动力学和气泡诱导的电解液运动。结果表明,随着阳极倾斜角度的增大,阳极气泡厚度逐渐增大。此外,与常规阳极相比,倾斜和倒角阳极有利于缩短气泡长度,提高气泡速度。同时,电解槽内气泡诱导的电解质运动可以改善稀土氟氧化物的分布和运动过程,从而提高电流效率。最后,基于电解液流动提出了一种新型的加料方式。

关 键 词：rare earth electrolysis cell horizontal electrode anode inclined angle bubble behavior electrolyte motion 

分 类 号：TF845[冶金工程—有色金属冶金]