【摘要】 采用等温饱和法系统测定了Nd₂O₃在NaF-AlF₃熔盐中的溶解度，重点考察了熔盐温度（1 010～1 070℃）和NaF/AlF₃物质的量之比（2.0～2.6）对其溶解度的影响。通过实验数据拟合，建立了Nd₂O₃溶解度与熔盐温度和NaF/AlF₃物质的量之比的一次回归模型。结果表明：Nd₂O₃在NaF-AlF₃熔盐中溶解平衡时间不小于60 min;在NaF-AlF₃熔盐体系中，Nd₂O₃溶解度随着熔盐温度升高和NaF/AlF₃物质的量之比增加而明显增大；在熔盐温度1 070℃、NaF/AlF₃物质的量之比2.6条件下，Nd₂O₃溶解度达到最大值6.20%;在实验参数范围内，构建的回归模型决定系数R²达0.983。更多还原

【Abstract】 The solubility of Nd₂O₃ in the NaF-AlF₃ molten salt system was systematically determined using the isothermal saturation method, with a focus on the effects of molten salt temperature（1 010～1 070 ℃） and NaF/AlF₃ molar ratio（2.0～2.6） on its solubility.A first-order regression model correlating the solubility of Nd₂O₃ with molten salt temperature and NaF/AlF₃ molar ratio was established through experimental data fitting.The results demonstrate that the dissolution equilibrium of Nd₂O₃ in the NaF-AlF₃ molten salt is achieved in no less than 60 min, and the solubility significantly increases with increasing molten salt temperature and higher NaF/AlF₃ molar ratio.The solubility of Nd₂O₃ reaches a maximum value of 6.20% at 1 070 ℃ with a NaF/AlF₃ molar ratio of 2.6.Within the experimental parameter range, the constructed regression model achieves a coefficient of determination（R²） of 0.983.更多还原