炭碗结构对预焙铝电解槽阳极压降影响的仿真研究  

Simulative research of effects of parameters of stub hole on anode voltage drop in aluminium electrolysis

作　　者：杨帅[1] 徐宇杰[1] 张红亮[1] 李劼[1] 赖延清[1] 崔喜风[1] 张翮辉[1] 

机构地区：[1]中南大学冶金科学与工程学院,湖南长沙410083

出　　处：《轻金属》2011年第9期38-43,共6页Light Metals

基　　金：国家科技支撑计划(2009BAE85B02);国家自然科学基金(50874120)

摘　　要：采用有限元仿真计算的方法计算铝电解槽的阳极压降,以经电流强化后的某电解槽阳极部分为研究对象,在ANSYS平台上建立了含钢爪与炭碗结构的半阳极有限元模型,考察了磷生铁与阳极炭块间接触电阻对阳极压降的影响,并使用该模型研究了炭碗结构参数对阳极压降的影响。结果表明:磷生铁与阳极炭块间接触电阻对阳极压降有较大影响,接触压降约60mV左右,约占整个阳极压降的17%;增大钢爪直径、炭碗深度、磷生铁浇铸厚度以及炭碗凹槽深度均可不同程度地降低阳极压降,而炭碗凹槽的倾斜角度对阳极压降几乎没有影响。In this article,the finit element method（FEM） was used to calculate the anode voltage drop in a current strengthened aluminium reduction cell.With practical claws and stub holes,an ANSYS based finite element model of a half anode was developed to investigate effects of electric contact resistence（ECR） on anode voltage drop between stub holes and carbon block,effects of stub hole＇s parameters on anode voltage drop were also studied using the same model.The results show that the ECR between stub holes and carbon block has a strong influence on anode voltage drop,which caused a 60mV potential loss in anode voltage drop,about 17% of the entire loss of an ordinary anode.Enlarged the steel stub diameter,increased the depth of stub holes,a thicker cast iron pouring and a larger flutes depth makes a decrease of anode voltage drop in various degree,while the gradient angle of flutes shows little influence on anode voltage drop.

关 键 词：铝电解 阳极压降 接触电阻 炭碗 磷生铁 

分 类 号：TF821[冶金工程—有色金属冶金]