从负载铀三脂肪胺中单级反萃取铀的影响因素  

Study on Influence Factors of Uranium-loaded TFA Organic-phase by Single-stage Stripping

作　　者：周志全[1] 赵凤岐[1] 舒祖骏[1] 张永明[1] 支梅峰 邓慧东[1] 任燕[1] ZHOU Zhi-quan;ZHAO Feng-qi;SHU Zu-jun;ZHANG Yong-ming;ZHI Mei-feng;DENG Hui-dong;REN Yan(Beijing Research Institute of Chemical Engineering and Metallurgy,CNNC,Beijing 101149,China)

机构地区：[1]核工业北京化工冶金研究院,北京101149

出　　处：《铀矿冶》2018年第4期247-251,257,共6页Uranium Mining and Metallurgy

摘　　要：针对胺萃取提铀流程单级反萃取技术,开展了时间、反萃取液铀质量浓度、硫酸根质量浓度、pH等影响因素研究,试验表明影响单级反萃取效果的主要因素是pH。研究探讨了pH过高反萃取效果差的原因,并进行了机制分析。台架验证试验表明:pH控制在合适的范围后,单级反萃取可以获得很好的效果,贫有机相铀质量浓度平均值为0.03g/L。For single-stage stripping technology of amine extraction process for uranium,influence factors such as time,uranium concentration of stripping solution,sulfate concentration and pH are carried out.The experimental results indicate that pH is the main factor that affects the single-stage stripping efficiency.Reasons for the poor stripping efficiency is explored when pH is too high,and the mechanism is analyzed too.Verification test is conducted,the results show that pH at appropriate range could make a good single-stage stripping result,and the average uranium concentration in lean organic phase is 0.03 g/L.

关 键 词：单级反萃取 三脂肪胺 铀 萃取 影响因素 

分 类 号：TL212.3[核科学技术—核燃料循环与材料] TF804.2[冶金工程—有色金属冶金]