Friday, December 23, 2011

Uranium enrichment

Uranium enrichmenthttp://world-nuclear.org/images/info/centrfge.jpg
Isolate a specific chemical elements isotopes of an element for the purpose of increasing the concentration of other isotopes for material is saturated with the desired isotope, for example, isolation of specific isotopes of natural uranium for enriched uranium and depleted uranium. The enrichment process in stages where each stage in the isolation of larger quantities of the desired isotope is enriched with the element increases after each stage limit access to the required percentage of purity.
For example, uranium is enriched uranium has increased the proportion of the isotope uranium-235 isotope and the removal of the other. The process of enrichment of these difficult and expensive and is difficult to isotopes, which is intended removal of uranium is very similar in terms of weight of the isotopes, which wants to keep it and fertilize is the enrichment process using heat via liquid or gas to contribute to the process of isolating isotopes is desirable and there are other ways a more complex example, using laser or X electromagnetism.
Natural uraniumUranium is the only component which can produce nuclear energy, containing natural uranium atoms with different blocks, called isotopes, and are commonly found in the (uranium 238) and (uranium) 235. And ratios as follows:

    
(Uranium 238) - 99.3%
    
(235) -0.7%
    
Other isotopes - 0.01
During the enrichment of natural uranium as nuclear fuel does not Sthaddamh in reactors or nuclear weapons consists of by-product, called the (depleted uranium). With an estimated amount of radioactivity (40%) of the irradiated power of natural uranium enriched
The enrichment process1 - Enrichment is the process of separating uranium 238 and uranium 235, and is by gas centrifuges. Where the circuit is fed to the cylinder (centrifuge) - that take place on the base managed by the engine - gas, uranium fluoride Hecsa - go uranium in its gaseous state to the centrifuge and turns of 50-70 thousand rpm.
2 - collects particles heavier than uranium-238 on the wall of the cylinder and down the least enriched uranium.
3 - collects particles from the lighter U-235 near the center of the cylinder and move up.
4 - Uranium-235 is sent to a second device for uranium centrifuges, are fed and then the next stage gas enriched to slightly enriched 235.
5 - Payment is on a depleted gas of uranium-235 is light for the work of feedback to the previous phase.
Enriched uraniumEnriched uranium is used in the manufacture of nuclear bombs, which should increase the level of uranium-235 before it is burned as fuel in nuclear reactors or used to make nuclear weapons.
Nuclear WeaponsDuring the year of 1500 can be of centrifuges to produce enough highly enriched uranium to produce one nuclear bomb. In the case of nuclear weapons is the level of uranium-235 above 90% as compared to uranium 238 and uranium-235 is so combustible.

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