稀土氧化物电解槽内阴极产生金属钕的研究

Study on Cathode Metal Neodymium in Rare Earth Oxide Electrolysis Cell

钕氧化物电解槽内金属钕在电解质中的下沉情况属于典型的两相流动。因此,采用多相流范畴的混合物模型,着重研究随着槽底部钕液面上升而发生的金属钕的扩散情况。模拟过程中没加入电磁场,在电解槽的优化设计过程中,母线和电极产生的磁场可以在一定程度上抑制钕的扩散。研究槽内单纯的流体流动,对母线和电极的排列方式可以提供一定的理论依据。以3 kA钕电解槽为模型,模拟计算了电解槽正常工作情况下,阴极表面产生的金属钕在电解槽内的分布情况,并对得到结果进行了分析。

Metal neodymium in neodymium oxide electrobath sinks in the electrolyte belongs to typical two mediums flowing. Therefore, it is feasible to research the diffusion of metal with the rising of the neodymium liquid surface at the electrobath bottom with the plenty-mediums mixture model. The impact of electric magnetic field to the fluid is not considered in the simulation course. In the course of designing the electrobath, the magnetic field arised by generatrix and electrode can restrain the diffusion of the neodymium to a certain extent. Researching the single fluid flowing can offer certain theoretical foundation to the arrangement of generatrix and electrode. 3 kA neodymium electrobath is used as model to research the distribution of metal neodymium in the electrobath generated from the surface of cathode when the electrobath is under the normal condition, and the results are analyzed.