用纳滤膜从酸性溶液中富集铀的可行性研究  

Feasibility Research on Enrichment of Uranium From Acid Solution by Nano-filter Membrane

作　　者：许智慧 李宏星[1] 胥国龙[1] 

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1期37-41,46,共6页Uranium Mining and Metallurgy

摘　　要：针对铀矿酸法地浸浸出液的饱和树脂再吸附工艺和淋萃流程存在的技术问题,提出了纳滤膜2次富集离子交换淋洗液的新方法。试验结果表明,当酸性溶液中铀质量浓度约为2g/L时,纳滤膜(M7)对溶液中铀的富集效果较好。在压力2.0 MPa、温度25℃条件下,铀浓度富集倍数达4.48,透析液中平均铀质量浓度为18mg/L,铀回收率为99.26%。Aimed to solve the current problems in saturated resin re-adsorption and eluex processes technology,a secondary enrichment method for ion-exchange eluate using nano-filter membrane was proposed.The experimental results show that the nano-filter membrane has the best uranium enrichment effect when the uranium concentration in acid solution is about 2 g/L.Under the conditions of pressure 2.0 MPa and temperature 25 ℃,uranium concentration can be enriched up to 4.48 time while the average uranium concentration in dialysis solution is 18 mg/L and the uranium recovery rate is 99.26%.

关 键 词：膜分离 酸性铀溶液 富集 

分 类 号：TL212.12[核科学技术—核燃料循环与材料]