Title of article :
Preparation of U3O8 by Calcination from Ammonium Uranyl Carbonate Using Response Surface Methodology: Process Ptimization
Author/Authors :
Bing Guo, Liu Faculty of Metallurgical and Energy Engineering - Kunming University of Science and Technology - Kunming - 650093 - CHAINA , Jin Hui, Peng Faculty of Metallurgical and Energy Engineering - Kunming University of Science and Technology - Kunming - 650093 - CHAINA , Li Bo, Zhang Faculty of Metallurgical and Energy Engineering - Kunming University of Science and Technology - Kunming - 650093 - CHAINA , Srinivasakannan, C. Chemical Engineering Department - the Petroleum Institute - Abudhabi - UAE , Jin Ming, Hu Key Laboratory of Unconventional Metallurgy - Ministry of Education - Kunming University of Science and Technology - Kunming - 650093 - CHAINA , Sheng Hui, Guo Faculty of Metallurgical and Energy Engineering - Kunming University of Science and Technology - Kunming - 650093 - CHAINA
Abstract :
The parameters to prepare U3O8 by calcination from ammonium uranyl carbonate
were optimized by using response surface methodology. A quadratic equation model for the value of
total uranium and U4+ of triuranium octaoxide was built and the effects of main factors and
their corresponding relationships were obtained. The statistical analysis of the results indicated that
the value of total uranium and U4+ of triuranium octaoxide was significantly affected by
the calcination temperature and calcination time in this study range. The optimized calcination
conditions were determined as follows: the calcination temperature 961.6 K, the calcination time
27.9 min, and the mass of material 37.86 g, respectively. Under these conditions, the value of total
uranium and U4+ of triuranium octaoxide was 84.29% and 28.14%. The validity of the model
was confirmed experimentally and the results were satisfactory.
Keywords :
U4+ , Total uranium , U3O8 , Calcination , Response surface methodology , Ammonium uranyl carbonate
Journal title :
Astroparticle Physics
