Yellowcake

This article is about the chemical urania. For the type of cake, see cake. For the falsified documents leading to an event popularly referred to as the 'yellowcake scandal', see Niger uranium forgeries.
Not to be confused with yellow substance.
Yellowcake
Names
Other names
urania
Identifiers
UNII
Properties
variable, see text
Appearance Yellow granules (as Yellowcake); Brown or black granules (UO2 and others)
Melting point 2,880 °C (5,220 °F; 3,150 K)
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).
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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 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 that has a pungent odor, is insoluble in water, and contains about 80% uranium oxide, which melts at approximately 2880 °C.