铝电解槽阳极系列电阻随工作天数的变化规律研究

Study of the rule of anode assembly resistivity changing with the working days

研究阳极电阻变化规律,找出在现有的技术条件下降低阳极压降的途径,对降低槽电压、降低能耗有重要意义。利用有限元分析软件ANSYS建立模型分析一个换极周期内阳极温度场与阳极系列电阻的变化规律,仿真结果表明:随着阳极的消耗,阳极顶部温度逐渐增加,阳极系列电阻逐渐变小,在电解温度一定的情况下,保持较高的电解质水平、较厚的覆盖层,有助于提高阳极温度,降低阳极系列电阻与压降。

It is very important for both decreese of cell＇s voltage and energy consumption if the approaches to decrease the anode＇s voltage drop can be found. A model iS established with finite dement analysis software ANSYS to analyze the change rule bwtween temperature field of anode and the resistivity of anode assembly within a cycle of changing anode. The emulation shows that the temperature at the top of anode is increasing and the resistivity of anode assembly decreasing with the consumption of anode. Under the circumstances of constant electrolysis temperature, it is helpful to increase the temperature of anode and decrease the resistivity and voltage drop of anode assembly if higher level of bath is kept and thicker layer of covering materials.