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本文采用二因子二次回归正交设计研究了２．１ＮａＦ·ＡｌＦ３—ＮａＣＩ一ＭｇＦ２熔盐体系的初晶点及９４０℃时体系的电导率，用数理统计分析法得到了初晶点及电导率随体系中ＮａＣｌ和ＭｇＦ２含量变化而变化的二元二次方程．试验结果表明，体系初晶点随ＭｇＦ２含量增高而降低；而随ＮａＣｌ含量变化出现极大值，极大值点随ＭｇＦ２含量变化而变化，越过极大值点，初晶温度随ＮａＣｌ含量增加而下降．体系电导率随ＮａＣｌ含量增加而增大，而随ＭｇＦ２含量的变化出极大值，越过极大点电导率随ＭｇＦ２增加而减少。
In this paper, the primary crystallization of 2.1NaF · AlF3-NaCI-MgF2 molten salt system and the conductivity of the system at 940 ℃ were studied by two-factor quadratic regression orthogonal design. The primary crystallization point and conductivity Binary Quadratic Equation with the Change of NaCl and MgF2 Contents in the System. The experimental results show that the primary crystallization point of the system decreases with the increase of MgF2 content, while the maximum value changes with the variation of NaCl content. The maximum temperature changes with the MgF2 content. decline. The conductivity of the system increases with the increase of NaCl content, but with the MgF2 content of the maximum value, beyond the maximum point conductivity decreases with the increase of MgF2.