地电化学提取铀的吸附材料制备方法  

The preparation method of electrogeochemical extraction adsorption materials for uranium

作　　者：刘洪军[1] 吴国东[1] 谢胜凯[1] 

机构地区：[1]核工业北京地质研究院中核集团铀资源勘查与评价技术重点实验室,北京100029

出　　处：《世界核地质科学》2017年第1期32-35,共4页World Nuclear Geoscience

基　　金：中国核工业地质局铀矿地质科研项目(编号:201495)

摘　　要：近地表土壤覆盖层中本身活动态U元素含量甚微,而地电化学方法是通过人工电场作用将近地表土壤中的铀离子吸附到提取材料之上,所提取铀含量相对更少,因此需要一种低本底、高效的吸附材料作为离子态铀的吸附材料。选取聚氨酯泡塑作为铀矿地电化学提取吸附材料,进而通过对聚氨酯泡塑的去本底和不同负载剂TRPO、P_(204)、N_(235)吸附铀效率试验,得出体积分数为20%的硝酸能够有效降低聚氨酯泡塑中的U、Th元素本底含量,负载有TRPO的聚氨酯泡塑对室内U元素标准溶液中U元素的提取率达到98.4%,在同等条件下TRPO负载剂的吸附容量更大、吸附效率更高,可作为地电化学提取U元素的理想负载剂。Mobile forms of uranium is very little in soil near surface layer.The electrogeochemical method uses the artificial electric field to extra those uranium ions into the adsorption material,and the extraction content of uranium is less relatively.Therefor a kind of low background and high efficiency material is needed to adsorb uranium ions.The polyurethane foam plastic is used as the adsorption material in electrogeochemical prospecting uranium deposit.By carrying out uranium adsorption efficiency tests about reducing the background of polyurethane foam plastic and loading different organic agents,such as TRPO,P204,N235,it is concluded that the 20%volume fraction of nitric acid can effectively reduce uranium and thorium background content in polyurethane foam plastic,and polyurethane foam plastic loading TRPO can extract U element up to 98.4%of the standard solution.This means that under the same condition TRPO has the better adsorption capacity and adsorption efficiency,which can be an ideal loaded reagent to the electrogeochemical extraction of uranium.

关 键 词：地电化学 深穿透 聚氨酯泡塑 TRPO负载剂 铀矿 

分 类 号：P631.3[天文地球—地质矿产勘探]