Na₃AlF₆-AlF₃-LiF-CaF₂系熔体的等溶初晶温度和等溶变温密度

来源期刊：中国有色金属学报2000年第1期

论文作者：马秀芳 李德祥 陈建设 张世荣 谭德康 李国华

文章页码：109 - 112

关键词：铝电解质；等溶初晶温度；等溶变温密度

Key words：aluminium electrolytes; initial crystallization temperature; density at nonequal temperature

摘    要：基于(2.23～3.0)NaF·AlF₃-(0～5%)LiF-(0～15%)CaF₂系熔体初晶温度、变温氧化铝溶解能力和变温密度的研究，首次得到了氧化铝溶解能力为6%，8%和10%时温度范围在 910 ～950 ℃的等溶初晶温度和密度在2.04～2.20g/cm³之间的等溶变温密度。分析了分子比、LiF添加量和CaF₂添加量对这两种性质的影响规律，为铝电解工业选择适宜的电解质成分提供了具有可比性的科学的理论依据。

Abstract: According to the regression equations of initial crystallization temperature(ICT), the solubility of alumina and density at the temperature of 20 ℃ above its ICT of (2.23～3.0)NaF·AlF₃-(0～5%)LiF-(0～15%)CaF₂ system, the ICT isograms within the range of 910～950℃ and the density isograms at nonequal temperature within the range of 2.04～2.20g/cm³ under the 6%, 8%, 10% solubility of alumina were first obtained respectively. The effects of bath ratio, concentration of LiF and CaF₂ were discussed. It can provide the scientific theoretical basis for choosing suitable aluminium electrolyte composition.