1
Uranium Mining and Milling
Uranium ore is extracted, purified and milled by miners to become uranium oxide (U3O8) or 'Yellowcake.'
2
Refining & Conversion
U3O8 is chemically converted into uranium hexafluoride (UF6), for light water reactors and uranium dioxide (U02) for heavy water reactors.
3
Enrichment
UF6 is fed into gas centrifuges to separate the lighter U235 isotope. U235 is typically enriched to up to 5%.
4
Fuel Fabrication
The enriched UF6 is converted back to uranium dioxide (UO2) and is then pressed and sintered into pellets before being put into fuel rods.
5
Electricity Generation
The fuel rods are loaded into nuclear reactors and used to generate steam. This drives turbines which power electricity generators.
6
Reprocessing and Recycling
Recovered uranium from reprocessing can be converted to UF6 and then re-enriched into new fuel.
U3O8
U3O8 or Yellow Cake
UF6
UF6
235U
235U typically enriched to up to 5%
Also known as EUP
— US Utility Nuclear Fuel Buyer