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地球科学进展
环境地球化学     
沱江流域磷矿开采和加工过程中放射性环境问题探讨
施泽明1,2,倪师军1,2,张成江1,2,葛良全1,郑〓林2,裴云倩2
1.四川省地学核技术重点实验室,四川 成都 610059; 2.成都理工大学地球化学系,四川 成都 610059
Discussion on Radioactively Environmental Problems during Phosphorite Mining and Processing in Tuojiang Area
Shi Zeming1,2, Ni Shijun1,2,  Zhang Chengjiang1,2, Ge Liangquan1,Zheng Lin2,  Pei Yunqian2
1.Sichuan Province Key Laboratory of Nuclear Techniques in Geosciences, Chengdu 610059, Chnia;2.Department of Geochemistry, Chengdu University of Technology, Chengdu 610059, Chnia
 全文: PDF(1152 KB)  
摘要:

大多数磷矿伴随着高含量的放射性元素U,通过对龙门山地区磷矿开采和加工过程中U,Th迁移的研究,初步查明了沱江流域放射性环境问题。研究结果显示,除含U磷块岩外,四川省磷肥及磷矿石中U含量水平相对偏高,磷矿开采加工是造成区域放射性元素含量偏高的主要原因;磷矿加工过程中放射性元素U,Th主要迁移到中间产物及最终产品中;磷石膏的堆放对周边土壤环境的放射性影响,水平方向上已超过2 km,垂向上近50 cm;磷矿的开采与加工已对流域产生了一定程度的放射性环境影响。

关键词: 磷矿磷肥放射性UTh    
Abstract:

Most Phosphorite is accompanied by high levels of radioactive elements uranium. By studying Uranium and Thorium migration during Phosphorite mining and processing in Tuojiang area, this paper did a preliminary identification of radioactive pollution in Tuojiang drainage basin. The result reveals that the Phosphorite mining and processing are the main causes of regionally high radioactive elements contents, which are reflected in relatively higher Uranium content in Phosphate fertilizer and Phosphorite except for Uraniumbearing Phosphorite in Sichuan province. During Phosphorite mining and processing, the radioactive elements (Uranium and Thorium) mainly migrate into the intermediate and final products. The impact of phosphogypsum dumping on periphery soil environment is unneglected with radioactive infiltration over 2 km in horizontal and 50 cm in vertical. On a certain extent, Phosphate mining and processing has produced radioactive environmental impact.

Key words: Phosphorite    Phosphate fertilizer    Radioactive    Uranium    Thorium.
收稿日期: 2012-07-28 出版日期: 2012-10-10
:  TD87  
基金资助:

中国地质调查局项目“成都经济区生态地球化学调查与评价”(编号:200314200015)

作者简介: 施泽明(1968-),男,江苏东台人,教授,主要从事环境、矿床地球化学研究.E-mail:shizm@cdut.edu.cn
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引用本文:

施泽明,倪师军,张成江,葛良全,郑 林,裴云倩. 沱江流域磷矿开采和加工过程中放射性环境问题探讨[J]. 地球科学进展, 10.11867/j.issn.1001-8166.2012.10.1134.

Shi Zeming, Ni Shijun, Zhang Chengjiang, Ge Liangquan,Zheng Lin, Pei Yunqian. Discussion on Radioactively Environmental Problems during Phosphorite Mining and Processing in Tuojiang Area. Advances in Earth Science, 10.11867/j.issn.1001-8166.2012.10.1134.

链接本文:

http://www.adearth.ac.cn/CN/10.11867/j.issn.1001-8166.2012.10.1134        http://www.adearth.ac.cn/CN/Y2012/V27/I10/1134

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