(中南大學 冶金科學與工程學院, 長沙 410083)
摘 要: 將某廠現有的160kA Hall-Heroult鋁電解槽改造成導流槽后， 在陰極上表面和陽極底面呈斜坡狀的條件下，計算了采用不同陰極導桿安裝方式時陰極的電位和電流分布， 即通過建立導流槽內部從陽極到陰極的一個半切片電熱場模型， 用有限元法分別對水平和平行于陰極斜坡兩種不同導流槽陰極導桿的安裝方式下陰極電位和表面電流密度分布進行了計算。結果表明， 不同的陰極導桿安裝方法對導流槽陰極的總電位降大小沒有明顯影響， 但是水平陰極導桿安裝更有利于陰極表面電流密度的均勻分布。
關鍵字: 導流槽； 陰極導桿； 陰極電流分布； 有限元法
ZHAO Heng-qin, LIU Ye-xiang
（College of Metallurgical Science and Engineering,
Central South University, Changsha 410083, China）
Abstract:A hypothetical drained cell model retrofitted from a 160kA Hall-Heroult cell was set up to calculate the current distribution in the cathode when the anode bottom and cathode top surfaces were declivous. Two half anode-cathode slice thermo-electrical models with the collector bars installed slopingly or horizontally were adopted to calculate the potential drop and electricity distribution of the cathode. The results show that, there is no obvious variation of the influence of different collector bar installations on the cathode potential drop, but the current distribution will be relatively evener when the cathode collector bar is horizontally installed.
Key words: drained cell; cathode collector bar; current distribution; finite element method
