辐射防护 ›› 2014, Vol. 34 ›› Issue (4): 255-257.

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江西省赣南地区稀土天然放射性核素调查

刘徽平, 钟明龙, 胡咏梅   

  1. 江西理工大学工程研究院,江西 赣州 341000
  • 收稿日期:2013-10-22 出版日期:2014-07-20 发布日期:2025-01-10
  • 作者简介:刘徽平(1963—),男, 2003年6月毕业于江西理工大学材料加工专业,硕士,副教授。E-mail: cammjust@126.com
  • 基金资助:
    国家自然科学基金资助项目(51264013)。

Investigation of Rare Earth Natural Radionuclide in Gannan Region, Jiangxi Province

Liu Huiping, Zhong Minglong, Hu Yongmei   

  1. Institute of Engineering Research, Jiangxi University of Science and Technology, Jiangsi Ganzhou 341000
  • Received:2013-10-22 Online:2014-07-20 Published:2025-01-10

摘要: 为研究离子吸附型稀土矿开发利用过程中天然放射性核素的种类、活度浓度水平及其迁移变化规律,对江西省赣南地区的离子吸附型稀土原矿和提取过程中废渣和废水中的天然放射性核素进行了调查研究。结果表明:安远、龙南稀土原矿除杂渣中天然放射性核素含量最高,其天然铀、镭-226和钍-232的最高活度浓度分别为3.69×104、8.33×103和3.40×103Bq/kg;提取过程中酸溶渣中天然铀、镭-226和钍-232的最高活度浓度分别为2.58×104、2.81×104和2.75×104Bq/kg;部分稀土渣头渣中天然铀和钍-232的放射性、个别企业中和渣中天然铀的比活度高于国家标准规定的豁免水平(1 000 Bq/kg),部份稀土企业外排废水中钍、铀总量高于国家排放标准的限值(0.1 mg/L)。

关键词: 稀土, 天然放射性核素, 赣南地区, 调查

Abstract: In order to identify the types, level and migration law of natural radionuclide in ionic rare earth during its development and utilization process, the natural radionuclide in raw ore, waste residues and wastewater of south ionic rare of Gannan region, Jiangxi province were investigated.The results showed that: the natural radionuclide in rare earth raw ore in An'yuan and Longnan is with high content, in which the specific activities of natural U, 226Ra and 232Th are 3.69×104, 8.33×103 and 3.40×103 Bq/kg respectively; And the specific activities of the acid-soluble slag are 2.58×104, 2.81×104 and 2.75×104 Bq/kg respectively; The radioactive level of natural U and 232Th in some rare earth tailings, and the specific activity of natural U in the neutralizing slag of some individual enterprises is higher than national standards' exemption level (1 000 Bq/kg). Also, the total content of Th and U in the efflux wastewater of some rare earth enterprises efflux wastewater are higher than the national emission standards limit (0.1 mg/ L).

Key words: rare earth, natural radionuclide, Gannan region, investigation

中图分类号: 

  • X837