No, Thorium is a fertile nuclear material.
Enrichment
Enrichment of uranium-235 is done.
Th, element 90, spelled thorium, is an actinide and has been used as a nuclear fuel (see Wikipedia.)
Today thorium is used as nuclear fuel only in India; very probable the future will be different.
thorium is breed to make uranium-233 fuel
1. Thorium is more abundant than uranium. 2. Thorium is not so expensive as uranium. 3. Countries without uranium but with thorium reserves have the possibility to build nuclear reactors. 4. Natural thorium has only one isotope; enrichment is not necessary. 5. Thorium can't be used in nuclear weapons. 6. The specific activity of thorium is very low. 7. The physical properties of ThO2 are superior to the properties of UO2. 8. The nuclear properties of thorium are suitable for a nuclear fertile material.
Thorium itself is not a fuel, it does not emit energy. However if it is irradiated in a reactor it forms uranium233 which is a fissile isotope of uranium. Therefore potentially thorium can be used to breed fissile fuel. There are issues around reprocessing however which have not been tackled because the incentive is not there whilst uranium235 is available. Thorium might become important in the future, or for a country which has thorium but not uranium. See link below
Thorium is and can be used as a fuel in nuclear reactors. It just happens to be not fissile, so it needs a neutron flux to create Uranium-233, which is fissile. There are pros and cons of using Thorium. For more information, please see the Related Link below.
It can be used as a blanket fuel to produce U-233 fissile fuel.
O: Thorium oxide, ThO2 - many important uses, see the link F: Thorium tetrafluoride, ThF4 - used as antireflection layer in optics C: Thorium carbide, ThC - used as nuclear fuel
Uranium, plutonium, or thorium.
In this type of nuclear reactor the fertile isotope thorium-232 is transformed in the fissile isotope uranium-233 and this act as a nuclear fuel.