Uranidioksidia

Uranidioksidia, also known as uranium dioxide or UO2, is a chemical compound. It is a crystalline solid and is the most stable oxide of uranium. Naturally occurring uranium is primarily found in the form of uraninite, which is a mineral composed mainly of UO2. In its pure form, uranidioksidia is a brown or black powder.

The primary use of uranidioksidia is as the most common form of nuclear fuel for nuclear reactors. It is typically fabricated into ceramic pellets and then assembled into fuel rods. When enriched uranium is used, the UO2 fuel contains a higher percentage of the fissile isotope uranium-235. During nuclear fission, the atoms of uranium-235 split, releasing a significant amount of energy in the form of heat. This heat is then used to produce steam, which drives turbines to generate electricity.

Uranidioksidia is also used in some specialized applications, such as in ceramics and as a pigment. However, its role in the nuclear energy industry remains its most significant contribution. Due to its high melting point and chemical stability, it is well-suited for the demanding conditions within a nuclear reactor core. The safe handling and disposal of uranidioksidia, particularly spent nuclear fuel, are critical aspects of nuclear power plant operation and decommissioning.