(1. 北方工業(yè)大學(xué)自動(dòng)控制研究所，北京100041; 2. 中南工業(yè)大學(xué)有色冶金系，長(zhǎng)沙410083)
摘 要: 論述了區(qū)域電流效率的意義，利用電流效率綜合機(jī)理模型和區(qū)域參數(shù)估計(jì)模型計(jì)算出了160 kA預(yù)焙槽的區(qū)域電流效率。結(jié)果表明，160kA預(yù)焙槽中各區(qū)域的電流效率很不均勻，最大值與最小值相差20%以上，陽(yáng)極底掌下的區(qū)域電流效率相差可達(dá)4%以上。采用區(qū)域電流效率的觀點(diǎn)，分析了某廠160kA 預(yù)焙鋁電解槽電流效率的特點(diǎn)，認(rèn)為低電流效率區(qū)域的存在和面積偏大導(dǎo)致電解槽平均電流效率偏低，并由此提出了提高電流效率的途徑。
關(guān)鍵字: 鋁電解；電流效率；預(yù)焙鋁電解槽
（1. Institute of Automatic Control, North China University of Technology, Beijing 100041, P.R.China;
2. Department of Metallurgy, Central South University of Technology, Changsha 410083, P.R.China）
Abstract:The zone current efficiency for prebake aluminum electrolysis cell was investigated. The comprehensive mechanism model for aluminum loss and some semi-empiric equations for calculating the parameters in the cell were used to compute the zone current efficiency in aluminum electrolysis on the basis of previous work. The uneven current efficiency of the whole cell is so obvious that the gap between different zones is over 20%, which varies with the different partitions of zone. According to the analysis of both calculation and measurement, some suggestions were put forward to improve the cell operation and to raise the current efficiency for prebake aluminum production cell.
Key words: aluminum electrolysis; current efficiency; prebake aluminum electrolysis cell
