How is uranium hexafluoride produced from uranium tetrafluoride?

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Enrichment of uranium — uranium processing How uranium is enriched to make a nuclear weapon.

Uranium hexafluoride (UF₆) is produced from uranium tetrafluoride (UF₄) through a process of fluorination. This is achieved by reacting UF₄ with fluorine gas at a temperature of 350 °C (660 °F).1

This reaction results in the formation of volatile uranium hexafluoride, which is subsequently purified through fractional distillation to serve as feedstock for isotopic enrichment.1