高效节能技术在大型预焙阳极铝电解槽的应用  

Application of High Efficiency Energy Saving Technology in Large-scale Pre-baked Anode Aluminum Reduction Cell

作　　者：田伟[1] 李贤[1] TIAN Wei;LI Xian

机构地区：[1]青海桥头铝电股份有限公司,青海西宁810100

出　　处：《有色冶金节能》2020年第4期14-18,共5页Energy Saving of Nonferrous Metallurgy

摘　　要：为了进一步推进低电压生产,更好地实现节能降耗,某公司在50台电解槽上实施高效节能技术,包括全面升级铝电解槽智能控制系统、应用多参数在线监测系统、优化电解质组分及生产工艺参数、改进预焙阳极结构、优化磷生铁配方等。上述技术措施应用后,节能效果显著,氧化铝浓度可以控制在低浓度区域,平均槽电压、直流电耗、阳极毛耗、炉底压降分别降低了110 mV、326 kWh/t-Al、8 kg、 69 mV,阳极使用周期由以前的31天延长到35天。In order to promote low-voltage production further and achieve energy saving and consumption reduction better, high efficiency energy saving technology was implemented on 50 reduction cells in a company, including upgrading intelligent control system of aluminum reduction cell comprehensively, application of multi-parameter online monitoring system, optimization of electrolyte composition and production process paramters, improvement of pre-baked anode structure, optimization of phosphorus iron formula. After the application of the above technical measures, the energy saving effect was significant, the alumina concentration could be controlled in the low concentration area, the average cell voltage, DC power consumption, anode gross consumption and pressure drop of furnace bottom had been reduced by 110 mV, 326 kWh/t-Al, 8 kg and 69 mV respectively, and life cycle of the anode had been extended from 31 days to 35 days.

关 键 词：铝电解槽 智能控制系统 多参数在线监测系统 电解质组分 预焙阳极结构 高效节能技术 

分 类 号：TF821[冶金工程—有色金属冶金] O646.51[理学—物理化学]