高钾电解质体系下阳极品质和锂钾含量对炭渣量的影响  

Effects of anode quality and lithium&potassium fluoride contents on amount of carbon dust during aluminum electrolysis process with high potassium electrolyte system

作　　者：包生重 罗英涛 陈开斌 何飞[2] 李刚[2] 冷龙洋 李昌林 苏自伟 汪艳芳 Bao Shengzhong;Luo Yingtao;Chen Kaibin;He Fei;Li Gang;Leng Longyang;Li Changlin;Su Ziwei;Wang Yanfang(Zhengzhou Non-ferrous Metals Research Institute Co.Ltd of CHALCO,Zhengzhou 450041;Zunyi Aluminum Co.,Ltd.,Zunyi 563000)

机构地区：[1]中铝郑州有色金属研究院有限公司,河南郑州450041 [2]遵义铝业股份有限公司,贵州遵义563000

出　　处：《铝镁通讯》2021年第1期35-41,共7页

摘　　要：针对某电解铝企业,长期跟踪了电解槽的运行过热度、不同炭阳极运行期间的炭渣量和电解质中含碳量,开展了电解质组分调整试验,跟踪分析了炭渣量和运行过热度随锂钾含量变化的过程。结果表明:高品质阳极能够明显降低炭渣量,降低电解质中的含碳量;电解运行过热度偏低,炭渣量偏高可能是高钾低锂电解质体系的特征,降低电解质中钾含量、适当提高锂含量,能够提高电解运行过热度,降低炭渣量;阳极质量、电解质中锂钾含量、运行过热度、阳极覆盖料中的含碳量都是影响电解过程中炭渣产生量的重要因素。In this paper,the operation superheat of electrolyte,the amount of carbon dust and the carbon content in electrolyte during the period of different quality carbon anodes usage in an aluminum smelter enteqjrise were tracked for a long time.The electrolyte composition adjustment test was carried out to track and analyse the carbon dust amount and operation superheat variations with the change of KF and LiF content.The results showed that high quality anodes could significantly reduce the amount of carbon dust and carbon content in electrolyte.Low operation superheat and high amount of carbon dust might be the characteristic of aluminum electrolysis process with high KF and low LiF content electrolyte system.Reducing the content of KF in electrolyte and appropriately increasing the content of LiF could improve the operation superheat and reduce the amount of carbon dust significantly.Anode quality,LiF and KF content in electrolyte,operation superheat of the bathe and carbon content in anode covering materials are important factors affecting carbon dust production in electrolysis process.

关 键 词：炭渣量 高钾电解质体系 锂钾含量 过热度 

分 类 号：TF8[冶金工程—有色金属冶金]