Abstract

Extraction of rare earth elements with solutions of di(2-ethylhexyl) hydrogen phosphate or tributyl phosphate in heptane, toluene, or tetrachloromethane is accompanied by the origination and development of spontaneous surface convection. The spontaneous surface convection is manifested in the form of interfacial oscillation but can also lead to its break. The spectral composition of spontaneous surface convection in the systems with tributyl phosphate and di(2-ethylhexyl) hydrogen phosphate was studied. The motion of liquid elements is more intense in the system with heptane. The modulus of the surface motion velocity of the liquid elements in the systems with tributyl phosphate is higher than in those with di(2-ethylhexyl) hydrogen phosphate. Local oscillatory action on the interfacial layer at the resonance frequency increases the extraction rate.

中文翻译：

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磷酸三丁酯和磷酸二（2-乙基己基）氢酯体系中的自然对流和萃取（汽提）速率

摘要

用磷酸二（2-乙基己基）氢或磷酸三丁酯在庚烷，甲苯或四氯甲烷中的溶液萃取稀土元素伴随着自然对流的产生和发展。自发的表面对流以界面振动的形式表现出来，但也可能导致其破裂。研究了磷酸三丁酯和磷酸二（2-乙基己基）氢在体系中自发表面对流的光谱组成。在庚烷体系中，液体元素的运动更为剧烈。具有磷酸三丁酯的体系中液体元素的表面运动速度模量高于具有磷酸二（2-乙基己基）氢的体系中液体元素的表面运动模量。