Uranium, the definition of Uranium, Uranium places

Uranium, the definition of Uranium, Uranium places

Uranium is a radioactive chemical elements in the periodic table, the symbol of a letter U. Atomic number is 92, and the most prominent qualities: a heavy, silvery white, Sam, and a piece of metallic uranium metal net seem close to silver metal or steel, but very heavy relative to their size. A density of about 20 grams / cubic centimeter, that is, 1 cubic meter of uranium weighs about 20 tons! It is the heaviest of metals found in nature.
Raw materials
    Ore Rnoti k2 (UO3) (VO4) 2.3H2O
    Ore Alaoranit UO2
    Pitchblende ore
DeducedFirst is cracking crude into small pieces and then assembled the way buoyancy using folic acid, is then roasted in the air, so is' function to oxides interview, is then filtered in a mixture of sulfuric acid and Bermnjanat potassium to make sure from the oxidation of uranium found crude oil is deposited uranium by adding hydroxide sodium until it turns to the formula is soluble (Na2U2O7) and called yellow cake, after Zllk is added nitric acid until it turns into nitrate Alaoranim UO2 (NO3) 2 (H2O) n, which is passed steam fluorine it is turned into steam of fluoride Alaoranim (UF4) is then purified by extraction of uranium reduction by calcium and extraction of uranium isotopes are also similar manner.
The most important isotopesAnd has four isotopes are uranium-235 and uranium -234 and uranium -233 and uranium-238, and there is this syndrome isotopes in nature, mostly uranium-238 by 97%.

    (Peer-atomic 235) which is subject to fission, which gives this isotope fission huge amounts of energy, which is not fissile automatically, but when exposed to a stream of neutrons turns into plutonium 239, which has the property fission automatic, and occurs in uranium ore by a small 0.7 percent and is used in nuclear reactors and atomic bombs are made of it and works Kpadi of the hydrogen bomb.
    (Peer-atomic 238) and present in the ore by a large 99.3 is not available for fission, a Maeetm enriched for use in nuclear reactors and is used in the study, diagnosis, and is also used to improve agriculture and chemotherapy is used to track the arrival of the drug to Omcnh in vivo. And is used in reactors generating nuclear fuel.
    (Atomic isotope 233) also met with the fission neutron and can be used in nuclear reactors operating helium Thermal nuclear reactor. 

   (Atomic isotope 234) and present as an impurity in the crude.

 

 

The process of nuclear fission of uranium

Half-lifeElement with radioactive uranium, since the atoms slowly disintegrate absolute power in the form of radiation, where the half-life is approximately 4.9 × 710 years for (atomic isotope 235), and about 7.04 × 810 years for (atomic isotope 238).

If you use uranium for peaceful purposes should not exceed the proportion of enriched uranium for 4 percent. The catalyst neutron must be less than the one in the case of use in cases explosive must reach the proportion of uranium enriched to 80%, and the catalyst neutron must be greater than one, as the catalyst neutron is the number of neutrons is used to create the chain reaction chain reaction in a nuclear reactor.

ApplicationsUranium is used in military applications in the so-called super-launchers where the use of depleted uranium, which can destroy armored targets at high speeds. These fragments of a negative impact on the environment, as happened in the events of the Gulf War (Gulf War Syndrome).Depleted uranium is also used as human shields for some of the containers containing radioactive materials.Also used in keeping a balance in the air thanks to the heavy weight.The uranium fuel and excellent facilities in the nuclear-powered.The properties of uranium and radioactive half-life of the sample makes it suitable to estimate the age of igneous rocks.Operation of large plants to generate electricity, and water desalination


Uranium in the Arab worldThere are raw uranium metal in the UAE city of Al Ain in the area (and transit), 15 km south of the eye, as well as in (Jebel Hafeet), while in Saudi Arabia discovered uranium in Dkhor granite at (Mount Alsaad) and (Alsoawin) and (Hawiye) and (Jebel Abed) and the (taller) and (Mazda and (strange), and identified the presence of uranium in northern Algeria at (Oiles) and (Mount doubles) and (Mount cervix) and (Albema) and (Timjaoan), In the Arab Republic of Egypt have discovered uranium district (thirsty), central Eastern Desert, as well as in the south at (camel) and (Enkerb Alfoghani) and (island), as well as classes in the sandy northern area (Fayoum) and (Mount tar), and there are ratios of uranium in phosphate rock in a (short) and (Safaga.

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