富锂电解质对铝电解工艺条件的影响及对策  

Influence of the Li rich electrolyte on aluminum reduction process and countermeasures

作　　者：刘冬喜[1] 

机构地区：[1]中国铝业股份有限公司连城分公司,甘肃永登730335

出　　处：《轻金属》2014年第2期30-33,共4页Light Metals

摘　　要：电解质中锂盐含量不断富集，影响到了电解工艺技术条件。通过对某电解厂电解质成分、原材料、技术参数的长期跟踪，分析了锂盐升高的具体原因及其对生产技术参数的影响。为使锂盐含量控制在3．5％以下、分子比保持在2．5—2．6，提出了将不同含锂水平的氧化铝搭配使用，添加低含量锂盐电解质，优化工艺参数的应对措施。Lithium accumulating in the electrolyte has affected the process and technical conditions for aluminum reduction production. Based on long - term track of electrolyte compositions, raw materials and process parameters, the reasons why the lithium contents rise in the electrolyte are specified and the influences of high lithium on production are analyzed. To keep the LiF less than 3.5 % and molar ratio of 2.5 - 2.6, the corresponding optimal control measures are put forward, such as the collocation use of alumina materials with different Li20 contents, adding low Li bath, optimizing process parameters.

关 键 词：铝电解 电解质 锂盐 工艺参数 

分 类 号：TF821[冶金工程—有色金属冶金]