What is the lifespan of uranium?
- What is the lifespan of uranium?
- What is the half-life of uranium?
- How to get uranium?
- What is the half-life of uranium 235?
- Where are the uranium reserves?
- Where is uranium found in the world?
- How to calculate the half-life of uranium 238?
- Which country has the most uranium?
- What is the price of a uranium reserve?
- What is the geographical distribution of natural uranium reserves in the world?
- How to use uranium in nuclear power plants?
L’uranium 236 (236U) is the isotope whose nucleus is consisting of 92 protons and 144 neutrons. Alpha emitter of the 4n+0 thorium decay chain. It has a half-life 23.42 million years old.
|tritium||12.3 years old|
|Plutonium-241||13.2 years old|
|Cesium 137||30.2 years|
|Uranium 238||4.5 billion years old|
How ? The rocks are crushed and finely ground then theuranium is extracted through different chemical operations. This is called processing, the result of which is a yellow paste called yellow cake containing 75% oxide ofuranium.
L’uranium 235 (another natural isotope ofuranium) to one half–life shorter than theuranium 238, only ~700 million years old.
Among them, the three largest producers ‘uranium are Cameco (Canada), Areva (France) and Kazatomprom (Kazakhstan). All these big companies are born in countries with the reservations in uranium the most important natural ones, with the exception ‘Areva.
L’uranium is a metal quite common in the basement of the Earth. He is contained in ores, which are extracted from open pit deposits or underground galleries. These deposits lie mainly in Australia, the United States, Canada, South Africa and Russia.
L’uranium 238 has a time of half–life t½=4.5 109 years. Recall the definition of time half–life. The half–life radioactive, (or period) denoted t½, of a sample of radioactive nuclei is equal to the time after which half of the initial radioactive nuclei have disintegrated.
In 2011, Australia had 31% of proven reserves of natural uranium in the world, ie nearly tons (4). The other countries with more than 5% of world reserves are: Namibia (5%).
According to other indications (from the Organization for Economic Co-operation and Development – OECD), the known reserves of uranium that can be exploited at a price of 130 dollars per kilo could be sufficient, at the current rate of consumption, for another 100 years. Uranium reserves by country.
The geographical distribution of natural uranium RRAs in the world is relatively more balanced than that of hydrocarbon reserves (nearly 48% of proven oil reserves and more than 43% of gas reserves are in the Middle East) ( 3).
Before it can be used as fuel in the reactors of nuclear power plants, it must be extracted and transformed. Uranium is a fairly common metal in the Earth’s subsoil. It is contained in ores, which are extracted from open pit deposits or underground galleries.