摘要
采用先进的实验技术测定了Na3AlF6-AlF3-Al2O3-CaF2-LiF-NaCl系电解质的初晶温度、密度和电导率.首先提供了测量的实验数据,接着基于实验数据给出了该体系的初晶温度、密度和电导率的计算公式,并与以前的经验公式作对比,最后从理论上分析了AlF3,Al2O3,LiF和NaCl对电解质物理化学性质的影响.实验表明,LiF和NaCl能够有效地降低铝电解质的初晶温度并能提高电导率,是十分优良的添加剂,两者配合使用效果良好.本工作旨在探索新型低温铝电解质组成,为铝电解工业选择适宜的电解质成分提供科学的理论依据.
Liquidus temperature, density and electrical conductivity of the Na3AlF6-AlF3-Al2O3-CaF2-LiF-NaCl electrolyte system for aluminum electrolysis were measured. The effects of AlF3, Al2O3, LiF and NaCl concentrations on liquidus temperature, density and electrical conductivity of the electrolyte were analyzed in theory. Empirical equations for the concentration and temperature dependence of these parameters were developed on the basis of experimental data. The reliability of these equations was compared with regression equations published in the literature. The results showed that the liquidus temperature was reduced and the electrical conductivity was increased greatly by adding NaC1 and LiF into the electrolyte. These data are useful for industry production of aluminum electrolysis, since they can provide a scientific basis for selecting suitable aluminum electrolyte composition.
出处
《过程工程学报》
EI
CAS
CSCD
北大核心
2007年第3期604-609,共6页
The Chinese Journal of Process Engineering
基金
国家自然科学基金重点资助项目(编号:50334030)
关键词
铝电解质
初晶温度
密度
电导率
aluminum electrolyte
liquidus temperature
density
electrical conductivity
