导流式铝电解槽电热平衡计算建模与应用  

Modeling and application for calculation of electric-thermal balance in a drained aluminium reduction cell

作　　者：周乃君[1] 童道辉[1] 张家奇[1] 王瑞雪[1] 

机构地区：[1]中南大学能源科学与工程学院,湖南长沙410083

出　　处：《中南大学学报（自然科学版）》2011年第12期3888-3893,共6页Journal of Central South University:Science and Technology

基　　金：湖南省科技计划重点项目(2009GK2009)

摘　　要：采用经验公式与数值计算相结合的方法建立导流槽电平衡及能量平衡计算模型,针对1台114.5 kA系列槽进行计算,得到槽体电热场的分布和槽膛内形的相关信息。研究结果表明:在设定的工艺条件下,导流槽的槽极距可降至2.75 cm,体系电压可降至3.312 V,铝电解能量利用率提高到53.63%,体现了导流槽的极大节能潜力。在计算工况下,导流槽也能获得形状规整的槽帮,稳态时槽帮厚度可达12 cm左右。该计算模型和计算结果可为导流槽的设计提供参考。The model for calculating of electric-thermal balance in a drained aluminium reduction cell was established by combining experiential formula and numerical simulation.A 114.5 kA drained cell was calculated by using this model.And the distribution of the electric-thermal field was obtained by the finite element analysis software.The results show that under the given process condition,the anode-cathode distance can drop to 2.75 cm,the cell system voltage drops to 3.312 V and the energy efficiency reaches 53.63%,which shows the great potential of energy saving for the drained cell.In addition,a well shaped ledge with reasonable thickness is also acquired in the investigated cell.In stable condition,the ledge is 12 cm in thickness.The research results can provide reference for design of the drained cell.

关 键 词：导流槽 电热平衡 仿真建模 有限元分析 

分 类 号：TF806.25[冶金工程—有色金属冶金]