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本文在DyCl_3-HCl-H_2O-P204-煤油体系中于较宽的稀土浓度和酸度范围内建立了镝的萃取平衡数学模型:D=3.1001I-1.7870.Y_H-0.6129。模型的形式简单、计算方便、预报分配系数准确。通过对T.K.Ioannou等人提供的数据进行关联,可以看出这种形式的模型也适用于该萃取体系的其它稀土元素。
In this paper, the mathematical model of dysprosium extraction equilibrium was established in DyCl_3-HCl-H_2O-P204-kerosene system over a wide range of rare earth concentrations and acidity: D = 3.1001I-1.7870.Y_H-0.6129. The form of the model is simple, easy to calculate, and the forecast distribution coefficient is accurate. By correlating the data provided by T. K. Ioannou et al., It can be seen that this form of model is also applicable to other rare earth elements in the extraction system.