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Some thorium uses:

- fertile material (as ThO2) in nuclear power reactors; is a precursor of the fissile isotope 233U.
- thorium dioxide can be used as refractory material for crucibles, tubes, rods, etc.
- thorium tetrafluoride (ThF4) is used as anti-reflection coating in optics.
- gas mantles (as ThO2)
- alloying metal for some aviation components (magnesium-thorium alloy, magnesium-zinc-thorium); also for welding alloys wolfram-thorium
- additive (as ThO2) in wolfram filaments - to stop crystalline growth of W and to increase time of use of light bulbs
- catalyst in organic chemistry (as ThO2)
- additive for special glass (as ThO2)
- additive in filaments (as ThO2) of magnetron tubes, vacuum tubes - reagent in chemistry laboratories (as thorium nitrate)
- etc.

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10y ago

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