Nuclear Techniques ›› 2014, Vol. 37 ›› Issue (11): 110601-110601.doi: 10.11889/j.0253-3219.2014.hjs.37.110601

• NUCLEAR ENERGY SCIENCE AND ENGINEERING • Previous Articles     Next Articles

Application of infrared spectrometer on-line monitoring and analyzing method in uranium fluoride volatility process

NIU Yongsheng SUN Lixin HU Congwei ZHANG Huanqi DOU Qiang WU Guozhong LI Qingnuan   

  1. (Shanghai Institute of Applied Physics, Chinese Academy of Sciences, Jiading Campus, Shanghai 201800, China)
  • Received:2014-05-16 Revised:2014-07-22 Online:2014-11-10 Published:2014-11-07

Abstract: Background: High temperature fluoride volatility process (HFVP) is an important pyroprocessing method for separating and recovering fissile material uranium from the spent fuel. Purpose: The goal of this work is to establish an on-line measurement technique for gaseous products. Methods: We established this technique based on infrared spectrometer in HFVP. Results: It was found that during the UF4 fluoride volatility reaction process, in addition to UF6, there were MoF6, UO2F2 and HF formation. The possible source of those compounds was analyzed according to their concentrations during the reaction process. Conclusion: The results in HFVP showed that infrared spectroscopy may be expected to be used not only for on-line monitoring of the process, but also for optimizing the process through on-line detecting MoF6 from corrosion of structure material and UO2F2 and HF from hydrolysis of UF6.

Key words: Pyroprocessing, Uranium fluoride volatility, Fourier Transform Infrared (FT-IR), On-line monitoring and analysis