【摘 要】
：
Liquidus temperatures in the molten salt system Na3AlF6-K3AlF6-AlF3 of interest for aluminum electrolysis were determined by thermal analysis method.The results
【机 构】
：
School of Metallurgical Science and Engineering
【基金项目】
：
国家重点基础研究发展规划(973计划);the National High-Tech Research and Development Program of China
论文部分内容阅读
Liquidus temperatures in the molten salt system Na3AlF6-K3AlF6-AlF3 of interest for aluminum electrolysis were determined by thermal analysis method.The results were presented and an empirical equation describing liquidus temperatures for primary crystallization was derived t=1003.5-0.081 ×A2.3159-5.87×B0.657-0.024×A2.22×B1.14+0.035×A2.17×B1.084,where t is the liquidus temperature in degree Celsius,A denotes the mass fraction of AlF3 in system Na3AlF6-K3AlF6-AlF3,and B denotes K3A1F6/(Na3AlF6+K3AlF6)in mass(％,the value was defined as KR in this paper).The composition limitations are 0＜w(AlF3)＜30％,and 0＜KR＜50％.The isothermal diagram of molten salt system Na3AlF6-K3A1F6-AlF3 was obtained in this composition limitation.
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