摘要
本文是在总结前人研究经验的基础上,通过对稀土电解槽槽型结构的理解,并借鉴钠电解槽的槽型结构,同时参考张小联等人的著作《低电流密度电解金属钕的研究》等,设计出一种新型全埋仿钠式稀土电解槽,并对其进行了极距变化和高度变化的模拟研究。
稀土电解槽中存在着复杂的物理场,而电场是研究其他物理场的基础,温度场、流场是决定稀土电解槽的生产效率和能耗。怎样设计合理的电场、流场、温度场决定着稀土电解槽设计的合理性,因此,电场、流场、温度场的研究就显得非常重要。本文首次利用ANSYS软件模拟研究了新型仿钠式稀土电解槽,并具体对阳极极距变化、阴极极距变化、阴极高度变化和阳极厚度变化等进行了电场模拟。对电场模拟出来的结果,用槽压和电场力两个方面去分析并确定出在不同参数变化时的最佳值。同时也首次利用FLUENT软件对新型仿钠式稀土电解槽中的阳极极距变化系列、阴极极距变化系列、阴极高度变化系列和阳极厚度变化系列进行了流场模拟。对流场模拟出来的结果,用气泡的流动和电解质的流动及涡旋的产生去分析并确定出在不同参数的最佳值。通过电场和流场的仿真模拟,确定出了阳极极距的最佳值为0.09m,阴极极距的最佳值为0.085m,阴极高度的最佳值为0.573m,阳极厚度的最佳值为0.07m。
本课题作为探索性和基础性的研究课题,其意义并不仅仅在于理论上的探索,更在于对稀土电解槽新槽型的改进和创新,以此为实际生产提供理论依据。
As far as the future of rare earth metallurgical industry, the conserving energy and consumption reduction is the primary problem to be solved. But, for the present rare earth electrolysis cell, the heat loss of electrolyte is greatly. Thereupon, to probe a new groove structure of rare earth electrolysis cell, with the aim of adapting the massive industrial production, it seems to be particularly necessity. And the article, on the basis of summarizing the former experience, by means of the understanding of the groove structure of rare earth electrolytic cell, draw on the experience of the groove structure of natrium electrolytic cell, and consult the works of Zhang Xiao-lian et al: Neodymium Electrolysis in Low Current Densities, and then design a new groove of the all buried imitation from natrium electrolytic cell to carry on the simulation of the distance between the anode and the cathode, and the high.
There is the complex physical field in rare earth electrolysis cell, while the electric field is the foundation of other physical fields, and temperature field and flow field are important factors to decide the production efficiency and energy consumption.. How to plan the reasonable electric field, flow field and temperature field determine the rationality concerning the design of electrolyzer. Therefore, the study of electric field, flow field and temperature field is very significant. This paper make full use of simulation software-ANSYS to simulate the electric field as to the new rare earth electrolytic cell of imitation from natrium electrolytic cell for the first time, and simulates the distance of between the anode and the cathode(the chief respect of anode), the distance of between the cathode and the anode (the chief respect of cathode), the high of the cathode and the thickness of the anode. The analysis and the determination is the basis of the voltage of electrolyzer and electric field force, and identify the optimum value from simulation under the variation of different parameters. And, at the same time, it fully utilize the simulation software-FLUENT to simulate the flow field as to the new rare earth electrolytic cell of imitation from natrium electrolytic cell for the first time, and simulate the distance of between the anode and the cathode(the chief respect of anode), the distance of between the cathode and the anode(the chief respect of cathode), the high of the cathode and the thickness of the anode. By means of the simulation of the electric field and the flow field, it is certain that the optimum value of the distance(the chief respect of anode) is 0.09m, the distance( the chief respect of cathode) is 0.085m, the high of the cathode is 0.573m, and the thickness of the anode is 0.07m.
Taking the topic for exploratory and basic subject, its significance lies in not only the theoretical exploration but also the improvement and innovation to the new groove structure of rare earth electrolysis cell, and provide the theoretical foundation for actual production.
引文
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