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本文对于影响铝电解槽电流效率的一些主要因素,例如:极距、电解質温度、氧化铝含量、“电解質比”以及效应系数等,进行了定量研究。利用40000安培电解槽进行研究的结果,用图表或简易的代数式加以麦述。叙述了通过阳极气体的分析直接測定电流效率的方法。实驗表明:二氧化碳被溶解在电解質中的鋁所还原生成一氧化碳;采用預焙阳极时与元素碳的反应是微不足道的。影响电流效率的諸因素及其与电流效率之間的相互关系是铝电解槽新結构及新操作方法的发展方向的依据。提供了一些新型电解槽结构的细节及操作原則,以及这些电解槽的初步生产指标。
In this paper, some important factors that affect the current efficiency of the aluminum reduction cell, such as the polar distance, the electrolyte temperature, the alumina content, the “electrolyte ratio” and the effect coefficient, were studied quantitatively. The results of a study using 40,000 amps of electrolytes were tabulated using a simple algebraic formula. A method of directly measuring the current efficiency by analyzing the anode gas is described. Experiments show that carbon dioxide is reduced by the aluminum dissolved in the electrolyte to form carbon monoxide; the reaction with elemental carbon when the prebaked anode is used is negligible. The factors influencing the current efficiency and the relationship between them and the current efficiency are the basis of the new structure of aluminum reduction cell and the development direction of new operation method. The details and operating principles of some new cell configurations are provided along with preliminary production specifications for these cells.