| 掺铀榍石人造岩石固化体的制备及其浸出性能 |
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| 引用本文： | 滕元成,赵伟,任雪潭,李玉香,吴浪.掺铀榍石人造岩石固化体的制备及其浸出性能[J].辐射防护,2012,32(2):72-76,87. |
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| 作者姓名： | 滕元成 赵伟 任雪潭 李玉香 吴浪 |
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| 作者单位： | 西南科技大学四川省非金属复合与功能材料重点实验室-省部共建国家重点实验室培育基地,四川绵阳,621010 |
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| 基金项目： | 国防基础科研计划资助项目 |
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| 摘 要： | 以碳酸钙(CaCO3)、二氧化钛(TiO2)、氧化铝(Al2O3)、氧化硅(SiO2)和硝酸铀酰(UO(2NO3)2.6H2O)为原料,采用固相反应工艺,制备掺铀榍石基人造岩石固化体。借助X射线衍射(XRD)、扫描电子显微镜(SEM)等分析手段,研究固化体的烧结温度、物相组成、U元素的浸出性能等。结果表明,掺铀榍石基人造岩石固化体的较佳烧结温度是1 260℃;榍石能很好地固溶U形成榍石固溶体;配方化学式为Ca095U0.05Ti0.9Al0.1SiO5、Ca092U0.04Ti0.9SiO5固化体,28天90℃的浸出率分别为7.0×10-10m.d-1、9.5×10-10m.d-1,其归一化浸出率分别是2.10×10-3g.m-2.d-1、1.76×10-3g.m-.2d-1。
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| 关 键 词： | 榍石 固化体 烧结温度 浸出率 |
The Preparation and Leaching Performance of Sphene Synroc Form Doped Uranium |
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| Teng Yuancheng,Zhao Wei,Ren Xuetan,Li Yuxiang,Wu Lang.The Preparation and Leaching Performance of Sphene Synroc Form Doped Uranium[J].Radiation Protection,2012,32(2):72-76,87. |
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| Authors: | Teng Yuancheng Zhao Wei Ren Xuetan Li Yuxiang Wu Lang |
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| Affiliation: | (State Key Laboratory Cultivation Base for Nonmetal Composite and Functional Materials,Southwest University of Science and Technology,Mianyang Sichuan 621010) |
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| Abstract: | The sphene synroc form doped uranium was prepared by solid-state method,using calcium carbonate(CaCO3),titanium dioxide(TiO2),alumina(Al2O3),silica(SiO2) and uranyl nitrate UO2(NO3)2.6H2O] as raw materials.The sintering temperatures,composes from crystals,and leaching rates of uranium of the synroc forms,were studied by means such as X-ray diffraction(XRD) and scanning electron microscope(SEM).The results indicate that the ideal sintering temperature of the synroc form is 1 260 ℃.The sphene can dissolve commendably uranium and come into being sphene solution.The leaching rates of uranium of synroc forms,for the formulas of Ca095U0.05Ti0.9Al0.1SiO5 and Ca092U0.04Ti0.9SiO5,are 7.0×10-10 m.d-1 and 9.5×10-10 m.d-1 respectively;Their unitary leaching rates of uranium are 2.10×10-3 g.m-2.d-1 and 1.76×10-3 g.m-2.d-1 respectively at 90 ℃,42 day. |
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| Keywords: | sphene form sintering temperature leaching rate |
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