نتایج جستجو برای: u3o8
تعداد نتایج: 69 فیلتر نتایج به سال:
Mining and ore processing activities are associated with changes in the surrounding environment and may pose a risk to human health, if adequate safety measures are not taken. The uranium ore generally varies worldwide between 0.03 – 3% U3O8, except for a few deposits where higher levels of uranium is reported. More than 95% of the ore is converted into waste material called “tailings”. Around ...
Raman spectroscopy is one of the most useful techniques for studying structure UO2 and changes due to specific defects caused by doping, in stoichiometry, irradiation, or heating under oxidizing conditions. In this paper, we illustrate several aspects application study UO2, including use wavelength-dependent excitation (455, 532, 785 nm) assess effects doping (Nd, Th, Zr), ion situ oxidation (U...
Fly ash is generated from LWR nuclear power plant as a low-level waste, which is contaminated with a small amount of radioactive materials, composed mainly of uranium oxide. The constituents of the fly ash are similar to those of the ore; the major components of the ash are oxides of silicon, aluminum, sodium, magnesium, zinc, iron sodium and uranium. In this study, removal of uranium from the ...
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