【摘要】 为了可靠地进行高加浓铀和钚的萃取过程,研究了一种结构简单的临界安全的混合澄清槽。通过三级槽的级联水力学和传质实验研究,认为:该混合澄清槽结构简单,临界安全性好,流动稳定,操作弹性大(流比为O/A=0.5～5,萃取效率高(Ex=90％)。在前人基础上,本研究开发的半开涡轮与梯形复合桨在较低转速时有很强的抽吸力和良好的混合效果,通过实验获得了适宜的搅拌转速值(250～280r/min)。更多还原

【Abstract】 The study on structure of critically safe multistage mixer-settler for the extraction process of high enriched uranium and plutonium has been completed. The mixer-settler has simple structure, good critical safety, flexibility in operation (.O/A from 0. 5 to 5) and high extraction efficiency (>90%). These performances have been proved in the hydrodynamics and mass transfer experiments at a three stages cascade mixer-settler. Based on the others experience, a trapezoidal impeller combined with half-open turbine is developed which has stronger pumping and well mixing function at low rotating speed. The optimal rotating speed is 250?80 r/ min obtained by experiments.更多还原