期刊论文

Radioactive Contamination Behaviors on Surface of Uranium Mining Industry in Nitric Acid Medium

Wang, Q.-L.

中文

核化学与放射化学

0253-9950

2019

41

3

304-310

10.7538/hhx.2019.YX.2018065

湖南省自然科学基金资助项目（2017JJ4010）；

本校为第一且通讯机构

为了掌握铀矿冶生产实践中常用设备材质经放射性污染后表面活度的变化规律,研究了不锈钢、有机玻璃、橡胶3种材质经不同浓度的硝酸铀酰溶液连续浸泡26 d后,样品表面活度、表面形貌及铀的存在形式等变化特征。结果表明:在26 d内,当铀溶液质量浓度为10.22 mg/L时,3种材质表面活度随浸泡时间增加变化不显著,当溶液铀质量浓度分别为563.58 mg/L、25.54 g/L时,各材质表面活度值均随浸泡时间增加逐渐增大。此外,3种材质表面活度从大到小依次是橡胶>不锈钢>有机玻璃。样品表面活度的增加主要是由于样品被腐蚀,导致铀在样品表面的附着沉积引起,并且表面的铀主要以UO_2(NO_3)_2·6H_2O及少量UO_3的形式存...

In order to master the rule of surface activity of radioactively contaminated materials commonly used in uranium mining and metallurgy, the characteristics of surface activity, surface morphology and the form of uranium were studied with stainless steel, plexiglass and rubber soaked in different uranium nitrate milling concentrations solution for 26 days. The results show that the surface activities of three kinds of materials do not change significantly over time as the mass concentration of uranium solution is 10.22 mg/L; the surface activity...