Abstract
Three different continuous processes were developed for the recovery of uranium from sulfate-containing simulated mill solutions. In all cases, a high-quality product, low in molybdenum and vanadium, which could be filtered and dried easily, was obtained. The presence of sulfate slows the precipitation rate and results in larger precipitated particles, which is an advantage in filtering and drying the precipitate. The morphologies of the large particles produced in the processes described in this report suggest that crystal growth predominated over nucleation in the precipitator. At 60 °C, the uranium peroxide precipitated as the dihydrate, but below 50 °C to 60 °C, the tetrahydrate was formed, and this knowledge led to important conclusions regarding the rate of the precipitation. A variety of particle morphologies was found, the most unusual being spherulitic aggregates consisting of needles radiating from a common point at the center of the particle.
We’re sorry, something doesn't seem to be working properly.
Please try refreshing the page. If that doesn't work, please contact support so we can address the problem.
References
W.D. Wilkinson:Uranium Metallurgy, Interscience, New York, NY, 1962, vol. 1, p. 62.
M. Shabbir and K.E. Tame:Rep. Invest. 7931, U.S. Bureau of Mines, Washington, DC, 1974.
F.E. Caropreso and W.P. Badger:Trans. Soc. Min. Eng. AIME, 1973, vol. 254, pp. 281–84.
F. A. Cotton and G.W. Wilkinson:Advanced Inorganic Chemistry, 3rd ed., John Wiley & Sons, New York, NY, 1972, p. 1104.
G. Gordon and H. Taube:J. Inorg. Nucl. Chem., 1961, vol. 16, pp. 268–71.
A.I. Moskvin:Radiokhimiya, 1968, vol. 10 (1), pp. 13–21;Sov. Radiochem. (Engl. Transl.), 1968, vol. 10 (1), pp. 10–16.
John Garside: University College, London, unpublished research, 1976.
H.D. Keith and F.J. Padden, Jr.:J. Appl. Phys., 1963, vol. 34, pp. 2409–21.
C.W. Bunn and T.C. Alcock:Trans. Faraday Soc., 1945, vol. 41, pp. 317–25.
E.S. Dana:Textbook of Mineralogy, 4th ed., John Wiley & Sons, New York, NY, 1932, p. 538.
T. Adamski:Verfahrenstechnik, 1971, vol. 5, pp. 499–501 (in German).
T. Sato:J. Appl. Chem. Biotechnol., 1976, vol. 26, pp. 207–13.
Author information
Authors and Affiliations
Additional information
Formerly Senior Engineer and Professor, Ames Laboratory and Department of Chemical Engineering, respectively, Iowa State University, is deceased.
Rights and permissions
About this article
Cite this article
Cahill, A.E., Burkhart, L.E. Continuous precipitation of uranium with hydrogen peroxide. Metall Trans B 21, 819–826 (1990). https://doi.org/10.1007/BF02657806
Received:
Issue Date:
DOI: https://doi.org/10.1007/BF02657806