期刊论文

Experimental Study on the Recovery of Uranium From High Phosphoric Acid Wastewater

中文

铀矿冶

1000-8063

2018

37

4

304-308

10.13426/j.cnki.yky.2018.04.014

湖南省研究生科研创新项目（CX2017B537）；

本校为第一机构

用D2EHPA-TRPO萃取和化学除磷的组合工艺,回收某研究院30%高磷酸废液中的铀。先用萃取法萃取铀,铀萃取率达99%以上,反萃率为99.8%,还有约1%的铀留在萃余液中。通过添加CaCO3与Na2CO3沉淀除去萃余液中的磷,滤液及洗涤液蒸发后得到的含铀松状碱渣,返回至料液溶解,进入萃取工序。试验结果表明:萃取剂经过10次循环仍能保持单级萃取率在90%以上,工艺过程中铀的总回收率达到99.9%;最终获得的产品铀含量为63.26%,达到一级品要求。试验结果对铀资源的综合利用和环境保护具有一定意义。

The combination process of D2EHPA-TRPO extraction and chemical dephosphorization were introduced to recover the uranium from 30%high phosphoric acid wastewater which is from one research institute.The extraction method was firstly used to extract uranium,and extraction rate of uranium is over 99%,and the stripping rate is 99.8%,1%of the uranium was still remaining in the raffinate.Then,some amount of CaCO 3 and Na 2 CO 3 were added into the raffinate to remove the phosphorus.The filtrate and the scrubbing solution were evaporated the water to get a loose,alkaline residue which containing urani...