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The Precipitation Of Uranium Peroxide In The Presence Of Fluorides
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Book Synopsis The Precipitation of Uranium Peroxide in the Presence of Fluorides by :
Download or read book The Precipitation of Uranium Peroxide in the Presence of Fluorides written by and published by . This book was released on 1941 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: The large-scale recovery of uranium from materials which also contained great quantities of fluorides did not give a product which had a low enough fluoride content to be treated satisfactorily by the other extraction process. The objective of the investigations carried out in this laboratory was a method of reducing the amount of fluoride which accompanied the uranium. The material from which the uranium was recovered in the industrial process was a slag containing (in addition to uranium) magnesium fluoride, calcium and dolomitic lines, crucible dross, and other waste products from the reaction of magnesium metal and uranium hexafluoride. Most of the fluoride was removed from this mixture by heating the roasted and ground slag with sulfuric acid. The residue was mixed with water and much of the caclium sulfate and fluoride, magnesium fluoride, and hydrated ferric oxide and alumina was precipitated by reducing the acidity. After filtering off the precipitate, ammonium sulfate was added to the solution and uranium peroxide (UO4 · 2H2O) was precipitated by addition of hydrogen peroxide. The pH of the solution was maintained between 3.0 and 3.5 during the precipitation by addition of sodium hydroxide. The uranium peroxide, even after washing, contained between 2 and 3% fluoride. The percentage of fluoride could be reduced to 0.5% by precipitating the peroxide from a more acidic solution but this required the use of much larger amounts of hydrogen peroxide.
Book Synopsis Sodium Uranium (IV) Fluoride by : W. B. Tolley
Download or read book Sodium Uranium (IV) Fluoride written by W. B. Tolley and published by . This book was released on 1955 with total page 30 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis French Process - Fundamental. The Precipitation of Ammonium Uranium Fluoride : Bench-scale Kinetic Tests by :
Download or read book French Process - Fundamental. The Precipitation of Ammonium Uranium Fluoride : Bench-scale Kinetic Tests written by and published by . This book was released on 1965 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: Chemical and infra-red spectrophotometric methods were used to analyse the off-gas from the reaction in which sulphur dioxide is bubbled into a heated solution containing ammonium fluoride and formic acid with or without the presence of uranyl ions. It was found that carbon dioxide is evolved for a relatively short period at a constant rate during the lengthy reaction between sulphur dioxide and formic acid. It is believed that the accompanying constant production of a reducing agent that is capable of reducing uranyl ions is responsible for the zero-order characteristics that have been found when precipitating ammonium uranous fluoride from such a system. From the qualitative observations made when studying off-gas evolution by infra-red spectrophotometric methods, several suggestions have been made that might make the process more attractive economically.
Book Synopsis Hydrogen Peroxide Precipitation of Uranium by : M. Shabbir
Download or read book Hydrogen Peroxide Precipitation of Uranium written by M. Shabbir and published by . This book was released on 1974 with total page 24 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis CALCIUM URANIUM(IV) FLUORIDE PRECIPITATION AND REDUCTION TO METAL. by :
Download or read book CALCIUM URANIUM(IV) FLUORIDE PRECIPITATION AND REDUCTION TO METAL. written by and published by . This book was released on with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: The double salt calcium uranium(IV) fluoride can be precipitated from uranyl nitrate solution. In the presence of fluoride and calcium ions, ferrous salts will reduce uranium(VI) nitrate to the four state precipitating calcium uranium(IV) fluoride. X-ray studies showed that the compound is a true double salt. The salt can be dehydrated under argon at 250 deg C and reduced to metal by the bomb technique. Reduction yields are high, but co-precipitated iron in the salt is concentrated in the uranium button, resulting in iron impurities of approximately 0.6%. The double salt is a suitable feed for fused salt electrolysis. Electrolyzing from a solution of 30% double salt dissolved in LiC1- KC1 eutectic dendritic uranium was recovered with a current efficiency of 35%. Iron impurity in the electrolyztically prepared uranium was reduced from an expected concentration of 5700 ppm to an actual concentration of 250 ppm. (auth).
Book Synopsis Development of the Excer Process III by : W. J. Neill
Download or read book Development of the Excer Process III written by W. J. Neill and published by . This book was released on 1958 with total page 20 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis The Precipitation of Double Fluoride Salts of Uranium by : C. W. A. Muir
Download or read book The Precipitation of Double Fluoride Salts of Uranium written by C. W. A. Muir and published by . This book was released on 196? with total page 36 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Nuclear Science Abstracts written by and published by . This book was released on 1973 with total page 1256 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Processing of Uranium-magnesium Fluoride Slag by : U.S. Atomic Energy Commission
Download or read book Processing of Uranium-magnesium Fluoride Slag written by U.S. Atomic Energy Commission and published by . This book was released on 1956 with total page 86 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Official Gazette of the United States Patent Office by : United States. Patent Office
Download or read book Official Gazette of the United States Patent Office written by United States. Patent Office and published by . This book was released on 1958 with total page 1414 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Production of Yellow Cake and Uranium Fluorides by : International Atomic Energy Agency
Download or read book Production of Yellow Cake and Uranium Fluorides written by International Atomic Energy Agency and published by . This book was released on 1980 with total page 374 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Processing of Fuel Assemblies that Contain Zirconium by : Woodfin E. Shuler
Download or read book Processing of Fuel Assemblies that Contain Zirconium written by Woodfin E. Shuler and published by . This book was released on 1959 with total page 36 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis The Chemistry of the Actinide and Transactinide Elements (Set Vol.1-6) by : L.R. Morss
Download or read book The Chemistry of the Actinide and Transactinide Elements (Set Vol.1-6) written by L.R. Morss and published by Springer Science & Business Media. This book was released on 2010-10-21 with total page 4511 pages. Available in PDF, EPUB and Kindle. Book excerpt: The fourth edition of "The Chemistry of the Actinide and Transactinide Elements" comprises all chapters in volumes 1 through 5 of the third edition (published in 2006) plus a new volume 6. To remain consistent with the plan of the first edition, “ ... to provide a comprehensive and uniform treatment of the chemistry of the actinide [and transactinide] elements for both the nuclear technologist and the inorganic and physical chemist,” and to be consistent with the maturity of the field, the fourth edition is organized in three parts. The first group of chapters follows the format of the first and second editions with chapters on individual elements or groups of elements that describe and interpret their chemical properties. A chapter on the chemical properties of the transactinide elements follows. The second group, chapters 15-26, summarizes and correlates physical and chemical properties that are in general unique to the actinide elements, because most of these elements contain partially-filled shells of 5f electrons whether present as isolated atoms or ions, as metals, as compounds, or as ions in solution. The third group, chapters 27-39, focuses on specialized topics that encompass contemporary fields related to actinides in the environment, in the human body, and in storage or wastes. Two appendices at the end of volume 5 tabulate important nuclear properties of all actinide and transactinide isotopes. Volume 6 (Chapters 32 through 39) consists of new chapters that focus on actinide species in the environment, actinide waste forms, nuclear fuels, analytical chemistry of plutonium, actinide chalcogenide and hydrothermal synthesis of actinide compounds. The subject and author indices and list of contributors encompass all six volumes.
Book Synopsis Enriched Uranium Processing by : Finis S. Patton
Download or read book Enriched Uranium Processing written by Finis S. Patton and published by . This book was released on 1963 with total page 302 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Uranium Production Technology by : Charles D. Harrington
Download or read book Uranium Production Technology written by Charles D. Harrington and published by . This book was released on 1959 with total page 600 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Nuclear Science Abstracts written by and published by . This book was released on 1967 with total page 1004 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Reprocessing of Power Reactor Fuels by :
Download or read book Reprocessing of Power Reactor Fuels written by and published by . This book was released on 1958 with total page 20 pages. Available in PDF, EPUB and Kindle. Book excerpt: