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  2. Uranium oxide - Wikipedia

    en.wikipedia.org/wiki/Uranium_oxide

    The metal uranium forms several oxides: Uranium dioxide or uranium(IV) oxide (UO 2, the mineral uraninite or pitchblende) Diuranium pentoxide or uranium(V) oxide (U 2 O 5) Uranium trioxide or uranium(VI) oxide (UO 3) Triuranium octoxide (U 3 O 8), the most stable uranium oxide; yellowcake typically contains 70 to 90 percent triuranium octoxide)

  3. Uranium dioxide - Wikipedia

    en.wikipedia.org/wiki/Uranium_dioxide

    Uranium dioxide or uranium(IV) oxide (UO 2), also known as urania or uranous oxide, is an oxide of uranium, and is a black, radioactive, crystalline powder that naturally occurs in the mineral uraninite. It is used in nuclear fuel rods in nuclear reactors. A mixture of uranium and plutonium dioxides is used as MOX fuel.

  4. Uranium compounds - Wikipedia

    en.wikipedia.org/wiki/Uranium_compounds

    The most common forms of uranium oxide are triuranium octoxide (U 3 O 8) and UO 2. [3] Both oxide forms are solids that have low solubility in water and are relatively stable over a wide range of environmental conditions. Triuranium octoxide is (depending on conditions) the most stable compound of uranium and is the form most commonly found in ...

  5. Uranium - Wikipedia

    en.wikipedia.org/wiki/Uranium

    The use of pitchblende, uranium in its natural oxide form, dates back to at least the year 79 AD, when it was used in the Roman Empire to add a yellow color to ceramic glazes. [12] Yellow glass with 1% uranium oxide was found in a Roman villa on Cape Posillipo in the Gulf of Naples, Italy, by R. T. Gunther of the University of Oxford in 1912. [29]

  6. Uraninite - Wikipedia

    en.wikipedia.org/wiki/Uraninite

    Uraninite, also known as pitchblende, is a radioactive, uranium-rich mineral and ore with a chemical composition that is largely UO 2 but because of oxidation typically contains variable proportions of U 3 O 8. Radioactive decay of the uranium causes the mineral to contain oxides of lead and trace amounts of helium.

  7. Energy density Extended Reference Table - Wikipedia

    en.wikipedia.org/wiki/Energy_density_Extended...

    Natural uranium (99.3% U-238, 0.7% U-235) in fast breeder reactor: 86,000,000: Reactor-grade uranium (3.5% U-235) in light-water reactor: ... Silver-oxide [19] 0.47: 1.8:

  8. Yellowcake - Wikipedia

    en.wikipedia.org/wiki/Yellowcake

    Yellowcake (also called urania) is a type of powdered uranium concentrate obtained from leach solutions, in an intermediate step in the processing of uranium ores. It is a step in the processing of uranium after it has been mined but before fuel fabrication or uranium enrichment. Yellowcake concentrates are prepared by various extraction and ...

  9. Triuranium octoxide - Wikipedia

    en.wikipedia.org/wiki/Triuranium_octoxide

    In the presence of oxygen (O 2), uranium dioxide (UO 2) is oxidized to U 3 O 8, whereas uranium trioxide (UO 3) loses oxygen at temperatures above 500 °C and is reduced to U 3 O 8. The compound can be produced by any one of three primary chemical conversion processes, involving either uranium tetrafluoride (UF 4) or uranyl fluoride (UO 2 F 2) as