Abstract
A low-waste flowsheet for extractive refining of uranium concentrates was developed. It involves denitration with urea and the use of the urea nitrate precipitate formed as a source of nitric acid in the extraction process. Implementation of this scheme will reduce the nitric acid consumption by 50–70% owing to its recycling in the extraction process, with the discharge of nitrate ions with wastewater decreased also.
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Afanas’ev, V.L., Rozhkov, V.V., Aleksandrov, A.B., et al., RF Patent 2 209 476, 2003, Byull. Izobret., 2003, no. 21.
Ostrovskii, Yu.V., Zabortsev, G.M., Aleksandrov, A.B., et al., RF Patent 2 295 168, 2007, Byull. Izobret., 2007, no. 7.
Ostrovskii, Yu.V., Zabortsev, G.M., Shpak, A.A., et al., RF Patent 2 253 161, 2005, Byull. Izobret., 2005, no. 15.
Ostrovskii, Yu.V., Zabortsev, G.M., Shpak, A.A., et al., Radiokhimiya, 2004, vol. 46, no. 3, pp. 232–235.
Maiorov, A.A. and Braverman, I.B., Tekhnologiya polucheniya poroshkov keramicheskoi dvuokisi urana (Process for Preparing Powders of Ceramic Uranium Dioxide), Moscow: Energoatomizdat, 1985.
Ustinov, O.A., Yakushin, S.A., Bel’tyukov, V.A., et al., At. Energ., 1997, vol. 82, no. 5, pp. 385–386.
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Original Russian Text © Yu.V. Ostrovskii, G.M. Zabortsev, I.G. Chapaev, A.B. Aleksandrov, S.Yu. Saifutdinov, A.L. Khlytin, 2009, published in Radiokhimiya, 2009, Vol. 51, No. 1, pp. 30–32.
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Ostrovskii, Y.V., Zabortsev, G.M., Chapaev, I.G. et al. Extractive refining of uranium concentrates using urea nitrate. Radiochemistry 51, 34–37 (2009). https://doi.org/10.1134/S1066362209010081
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DOI: https://doi.org/10.1134/S1066362209010081