预焙槽阳极压降影响因素研究  

STUDY OF ANODE VOLTAGE DROP AFFECTING FACTORS OF PRE-BAKED CELL

作　　者：张报清[1] 雷霆[1] 余宇楠[1] 

机构地区：[1]昆明冶金高等专科学校,昆明650031

出　　处：《矿冶》2015年第1期50-53,共4页Mining And Metallurgy

摘　　要：针对我国铝电解吨铝电耗高的现状,以186kA系列电解槽阳极为研究对象,对阳极压降、回路压降和槽工作电压进行了理论计算,分析了影响阳极压降过高的因素。研究结果表明,回路压降约占槽工作电压23%;阳极压降约占回路压降41%;阳极压降理论计算值为391.15mV;影响阳极压降的主要因素是钢-炭压降和阳极炭块压降,次要因素是铝-钢爆炸焊压降和阳极钢爪压降;降低阳极压降有一定潜力。阴极压降占回路压降的比重也较大,降低阴极压降也有一定潜力。对于300kA以上大型预焙槽,应该运用阳极理论压降放大准则进行研究与分析。According to the present situation of high power consumption of aluminium electrolysis, anode voltage drop, circuit voltage and working voltage have been theoretically calculated for a 186 kA series aluminium electrolytic cell anode. The factors influencing anode voltage have been analysed. The results show that, circuit voltage drop takes about 23 percentage of the working voltage, and anode voltage drop takes about 41 percentage of the circuit voltage drop; The calculated value of the anode voltage drop is about 391. 15 mV; the main factors influencing anode voltage are steel-carbon voltage drop and carbon block voltage drop, the secondary factors are explosive weld- ing voltage drop and steel stub voltage drop. It is feasible to reduce anode voltage drop. The cathode voltage drop also has a big account of circuit voltage drop, it is feasible to reduce cathode voltage drop as well. It is better to use the rule of amplification to study and analyse anode voltage drop of higher than 300 kA series prehaked aluminium reduction cells.

关 键 词：铝电解 预焙槽 阳极 电压降 节能降耗 

分 类 号：TF821[冶金工程—有色金属冶金]