110kA无隔板镁电解槽电解质成分的选择及其实践  

Choices of Electrolyte Composition and practice in 110kA Magnesium Electrolytic Cell

作　　者：欧阳全胜[1] 陈平[2] 吴英敏[2] 程代松 祝永红[2] 

机构地区：[1]中南大学冶金科学与工程学院,湖南长沙410083 [2]遵义钛业有限责任公司,贵州遵义563004

出　　处：《轻金属》2004年第9期40-44,共5页Light Metals

摘　　要：国内某厂 1 1 0kA无隔板镁电解槽自 2 0 0 1年 2月启动至今 3年多的时间 ,电解质成分历经了由高钙、低钾含量至低钙、高钾含量的巨大变化。其间 ,通过对电解质不同组分性质的研究 ,逐步调整了电解质成分并在生产中加以运用。生产实践表明 ,选择采用高钠 (NaCl40 %～ 48% )、高钾 (KCl 30 %左右 )、低钙 (CaCl 2 5 %～ 1 0 % )及适当氯化镁浓度 (MgCl2 1 0 %～ 1 8% )的电解质成分能够明显提高电解槽的电流效率、降低粗镁的直流电耗。同时 ,在一定程度上也改善了生产过程中频繁出现的镁汇聚不好。For more than 3 years since February 2001,one factory in China has changed a lot the electrolyte composition of 110kA magnesium electrolytic cell to low CaCl 2 level from its high content,to high KCl level from its low content.During that time,different electrolyte compositions were put into production practice and then adjusted gradually according to practical situation and studies on the characters of electrolyte composition.The results of practice showed that choosing such electrolyte composition as MgCl 2 10%～18%,NaCl 40%～48%,KCl 30% or so and CaCl 2 5%～10% could obviously enhance current efficiency,and lower direct current drain of crude magnesium.Such content,to some estent,could also improve collection of magnesium,and reduce the incidences of ill cell.

关 键 词：无隔板 镁电解槽 电解质成分 V型导镁槽 

分 类 号：TF822[冶金工程—有色金属冶金]