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地质论评  2003 

地浸过程中铀迁移特征及条件的实验研究

Keywords: 地浸过程铀迁移迁移规律存在形式水文地球化学

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Abstract:

通过室内模拟试验,对地浸过程中铀的迁移规律进行了研究。结果表明:①溶浸液中铀浓度值在达到饱和浓度前,随地浸路径延长而逐渐增大;②铀的存在形式及其含量与水文地球化学条件相关,当1.9<pH<4.4时,为UO2SO4和UO^22;当4.4<pH<5.1时,为UO2SO4和(UO2)a(OH)^5;②随着水文地球化学条件的变化,铀迁移经历了溶解迁移、水解沉淀、再溶解迁移的多次旋回,即当pH>4.6、Eh<420mV时,溶解状态的铀产生沉淀;当2.0<pH<4.6,420mV<Eh<650mV时,U^6溶解迁移;当pH<2.0、Eh>650mV时,U^4溶解迁移;④根据溶浸液中铀浓度和pH、Eh临界值,铀地浸路径可划分出充分浸出带、有效浸出带、铀沉降带和未浸出带,不同特征的浸出带随浸出时间的变化而有序移动。

References

[1]  高柏,罗定贵,张卫民,王国华.2001.地浸铀矿实验室地质工艺研究.见:周文斌等编.核资源与环境研究成果成就与展望.北京:原子能出版社,142~149.
[2]  高柏,史维浚,孙占学.2002.PHREEQC在研究地浸溶质迁移过程中的应用.华东地质学院学报,25(2):132~135.
[3]  格拉博夫尼科夫B A. 1983.溶浸采矿法的地质工艺研究.夏同庆,刘家俊,白风周译.1991.北京:原子能出版社,14~92.
[4]  李德平,顾连兴,王保群.2002.层间氧化带型砂岩铀矿床地浸过程的热力学研究.地质论评,48(6):642~650.
[5]  罗定贵,黄国夫.1998.可地浸砂岩铀矿实验地质工艺研究.国外铀金地质,15(4):376~379.
[6]  彭新建,闵茂中,王金平,贾恒,魏观辉,王建峰.2003.层间氧化带砂岩型铀矿床的铁物相特征及其地球化学意义――以伊犁盆地511铀矿床和吐哈盆地十红滩铀矿床为例.地质学报,77(1):120~125.
[7]  权志高,李占双.2002.新疆十红滩砂岩型铀矿床基本特征及成因分析.地质论评,48(4):430~436.
[8]  史维浚.1990.铀水文地球化学原理.北京:原子能出版社,170~236.
[9]  施友善.1992.381地浸场浸出剂选择和应用.铀矿开采,16(2):9-16.
[10]  王西文.1990.采矿手册.北京:冶金工业出版社,588~605.
[11]  王西文.1997.论地浸钻孔排列形式.铀矿开采,21(3):1~5.
[12]  Gao Bai, Luo Dinggui, Zhang Weimin,Wang Guohua. 2001. The study on geological technics of in-situ leaching uranium in laboratory. In: Zhou Wenbin, eds. The Studying Achievement and Outlook of the Nuclear Resources and Envronment. Beijing: Atomic Energy Publishing House, 142~149(in Chinese with English abstract).
[13]  Gao Bai, Shi Weijun, Sun Zhanxue. 2002. PHREEQC applied in studying solute transport process of in-situ leaching. Journal of East China Geology Institute, 25(2): 132~135 (in Chinese with English abstract).
[14]  Li Deping, Gu Lianxing, Wang Baoqun. 2002. A thermodynamic study on the in-situ leaching process in interlayered oxidation zone type sandstone uranium deposits――A case study of the No. 512 uranium deposit. Geological Review, 48(6):642~650(in Chinese with English abstract).
[15]  Luo Dinggui, Huang Guofu. 1998. The study on geological technics of in-situ leaching sandstone uranium in laboratory. The Geology of Uranium and Gold Abroad,15(4):376~379(in Chinese).
[16]  Pang Xinjian, Min Maozhong, Wang Jinping, Jia Heng, Wei Guanhui, Wang Jianfeng. 2003. Characteristics and geochemical significance of the ferrum phases in the Shihongtan interlayered-oxidation zone sandstone type uranium deposit. Acta Geologica Sinica, 77(1):120~125(in Chinese with English abstract).
[17]  Quan Zhigao, Li Zhanshnang. 2002. Geological characteristics and genesis of the Shihaongtan sandstone-type uranium deposit, Xinjiang. Geological Review, 48(4):430~436 (in Chinese with English abstract).
[18]  Shi Youshan. 1992. The choice and apply of leaching agent in 381 Leaching field. Uranium Mining,16(2):9~16(in Chinese).
[19]  Wang Xiwen. 1990. Mining manual. Beijing: Metallurgy Publishing House, 588~605(in Chinese).
[20]  Wang Xiwen. 1997. Arranging form of in-situ leaching. Uranium Mining, 21(3): 1~5(in Chinese).
[21]  Γрабовников В А. 1983. Геотхнологоические исследедования при разведке металлов. Мосскова: Недра.

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