底部出电型铝电解槽母线结构与电磁流场仿真优化  

Simulation and optimization of bus structure and electro-magneto-flow field of aluminum reduction cells with vertical bottom bars

作　　者：刘业翔[1] 梁学民[1,2] 李劼[1] 张红亮[1] 徐宇杰[1] 丁凤其[1] 邹忠[1] 

机构地区：[1]中南大学冶金科学与工程学院,长沙410083 [2]河南中孚实业股份有限公司,巩义451200

出　　处：《中国有色金属学报》2011年第7期1688-1695,共8页The Chinese Journal of Nonferrous Metals

基　　金：国家"十一五"科技支撑计划资助项目(2009BAE85B00);国家自然科学基金资助项目(50874020)

摘　　要：从减小槽内水平电流和垂直磁感应强度进而改善磁流体稳定性的角度出发,提出一种底部出电型结构铝电解槽,该种电解槽采用阴极垂直出电方式代替传统水平出电方式。在ANSYS软件平台上,建立400 kA级该槽型的电磁场模型并进行求解,根据计算结果对母线配置进行优化,得到一种可使磁场分布最优的母线结构,在该母线配置下,垂直磁感应强度最大值为1.658 mT,平均值为0.401 mT,远低于同规格普通电解槽,磁流体稳定性计算结果进一步表明该槽能在低极距下稳定运行,具有较大的节能潜力。Based on the target of reducing the horizontal current and vertical magnetic field strength,thereby improving the magnetohydrodynamic stability,a kind of aluminium reduction cell with vertical bottom was improved,in which the current flowed out of cathode vertically instead of horizontally.An electromagnetic simulated model of a 400 kA cell with this structure was developed by ANSYS software,and a bus bar scheme that can make the best electromagnetic field distribution was obtained after being optimized according to the computing result.Adopting this bus bar scheme,the maximum and average values of vertical magnetic flux density are 1.658 mT and 0.401 mT,respectively,which are far lower than those in traditional cells,and the MHD computation further proves that the above cell can operate stably under a small anode-cathode distance and has great potential in energy saving.

关 键 词：铝电解 母线优化 多物理场 

分 类 号：TF821[冶金工程—有色金属冶金]