This represents an intermediate step in the processing of uranium ores. Yellowcake concentrates are prepared by various extraction and refining methods, depending on the types of ores. Typically yellowcakes are obtained through the milling and chemical processing of uranium ore forming a coarse powder which is insoluble in water and contains about 80% uranium oxide, and which melts at approximately 2878°C.
Yellowcake is used in the preparation of fuel for nuclear reactors, where it is processed into purified UO2 for use in fuel rods for PHWR and other systems using unenriched uranium. It may also be enriched, by being converted to uranium hexafluoride gas (UF6), by isotope separation though gaseous diffusion or in a gas centrifuge to produce enriched uranium suitable for use in weapons and reactors.
Yellowcake is produced by all countries in which uranium is mined.
2007-03-10
18:26:18
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