铝电解主要生产条件对炉底沉淀的影响  

Impact of Main Production Conditions of Aluminum Electrolysis on Furnace Bottom Precipitation

作　　者：周爱平 ZHOU Ai-ping

机构地区：[1]沈阳铝镁设计研究院有限公司,辽宁沈阳110001

出　　处：《有色冶金节能》2021年第5期18-20,26,共4页Energy Saving of Nonferrous Metallurgy

摘　　要：电解槽炉底沉淀的产生会增加吨铝能耗,紊乱熔体区的磁场分布,使炉膛内形不规整,对电解槽生产的影响较为恶劣。本文综述了电解槽内磁场分布、分子比、电解质水平、铝水平、覆盖料、阳极效应等生产条件对炉底沉淀产生和消除的影响。分析表明,适当提高电解槽电压、电解质分子比、电解质水平,调整合适的铝水平,适当加强槽上部保温等措施都可有效消除炉底沉淀。The precipitation in the furnace bottom of electrolytic cell will increase the energy consumption per ton of aluminum, and disturb the stability of magnetic field distribution, as to make the inner shape of the hearth irregular and impose bad influence on the electrolytic cell production. This paper summarized the effect of magnetic field distribution, molecular ratio, electrolyte level, aluminum level, covering material, anode effect and other production conditions on the formation and elimination of bottom precipitation. It is shown by analysis that the precipitation at the bottom of the furnace can be effectively eliminated by appropriate measures such as raising the electrolytic cell voltage and the molecular ratio of electrolyte, adjusting the aluminum level and strengthening the thermal insulation at the top of the electrolytic cell, etc.

关 键 词：铝电解 炉底沉淀 磁场分布 分子比 电解质水平 铝水平 阳极效应 电解槽 

分 类 号：TF821[冶金工程—有色金属冶金]