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为研究稀土电解后期阳极壁面向上倾斜对气泡逸出过程的影响,以3kA钕电解槽为研究对象、相似理论为基础,建立了电解过程的水模型物理实验平台,随后采用水模型实验法研究不同壁面上倾角度下气泡形状、直径、接触面积、滑移距离等参数随时间变化情况,上倾角度选取3°、5°、7°、10°和20°。结果显示,当壁面上倾角度过大时,气泡脱离时间延长,气泡成串脱离的现象消失,同时发生阳极效应,使电流效率降低,生产成本增加。为了与实际电解过程相符合,阳极壁面上倾角度不宜过大,以3°为佳。
In order to study the influence of upward tilt of the anodic wall on the evolution of bubbles during the late stage of rare earth electrolysis, a 3kA neodymium cell was taken as the research object and a similarity theory. The water model physical experiment platform for the electrolysis process was established. The shape, diameter, contact area, sliding distance and other parameters of the bubble with the angle of inclination on the wall vary with time. The inclination angle is selected as 3 °, 5 °, 7 °, 10 ° and 20 °. The results show that when the angle of the wall is too large, the time of air bubbles detachment is prolonged, and the phenomenon of air bubbles stripping off disappears. At the same time, the anode effect occurs, which reduces the current efficiency and increases the production cost. In order to be consistent with the actual electrolysis process, the anode wall inclination angle should not be too large, preferably 3 °.