新型阴极结构铝电解槽的物理数学模拟  

Mathematical and Physical Simulation of New Cathode Structure of Aluminum Electrolytic Cells

作　　者：刘燕[1] 张廷安[1] 赵秋月[1] 李冲[1] 王洪星[1] 章俊[1] 冯乃祥[1] 

机构地区：[1]东北大学材料与冶金学院多金属共生矿生态化利用教育部重点实验室,辽宁沈阳110004

出　　处：《过程工程学报》2011年第5期721-728,共8页The Chinese Journal of Process Engineering

基　　金：国家高技术研究发展计划(863)基金资助项目(编号:2009AA063701);国家自然科学基金资助项目(编号:50934005;50974035;51074047);中国博士后科学基金资助项目(编号:20090451277);教育部高校博士点专项基金资助项目(编号:20050145029);辽宁省青年人才基金资助项目(编号:2005221012);辽宁省财政厅/省计划资助项目(编号:200921007)

摘　　要：采用相似原理指导下的水模型实验,研究新型阴极结构电解槽中阳极气体的扰动.通过高速摄影手段拍摄液面波动,得到不同操作条件下阴极结构铝电解槽水模型的液面波动图像,利用Image-Pro-Plus6.0专业图像分析软件对捕捉到的波动静态图进行处理,获得液面波动的最大高度.并用Fluent6.2.16进一步对电解槽的阳极结构进行数学模拟.结果表明,极距的增加、电解质水平的提高、气体流量的减小,均会减小界面波动.新型阴极结构电解槽比普通阴极结构阳极气体引起的界面波动小,新型阴极结构可有效地降低极距;相同实验条件下,1/2阳极产生气体引起的界面波动振幅和普通阳极没有明显区别,而1/4阳极的减波作用较好,倒角对于界面波动的影响甚微.Using cold water model experiments based on the principle of similitude,the level fluctuations by anode gas disturbance in an aluminum electrolysis cell were studied.By means of high-speed photography,the level fluctuation images of new cathode structure electrolytic cell of cold water model in different operate parameters were obtained.The maximum surface wave height was obtained by using the professional image analysis software Image-Pro-Plus 6.0 to deal with fluctuations in the captured static figures.Moreover,mathematical simulation on the anode structure of cell with Fluent 6.2.16 was also carried out.The results show that the fluctuation in new cathode structure water model of aluminum electrolysis is decreased significantly compared with that of normal cathode structure water model under the same experimental conditions.In the simulated water model cell with new cathode structure,interface fluctuation amplitude will be reduced significantly along with increasing of the anode cathode distance,increasing of the electrolyte level and decreasing of gas flow rate.The fluctuation amplitude caused by the gas from 1/2 anode is not much different from that of traditional anode,1/4 anode can reduce waves better,but chamfer has almost no impact on the fluctuation.

关 键 词：新型阴极结构 铝电解 物理模拟 数值模拟 界面波动 

分 类 号：TF827[冶金工程—有色金属冶金]