| 云南个旧锡多金属矿区尾矿元素地球化学特征 |
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| 引用本文： | 潘含江 程志中 杨,榕 周国华.云南个旧锡多金属矿区尾矿元素地球化学特征[J].中国地质,2015(4):1137-1150. |
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| 作者姓名： | 潘含江 程志中 杨 榕 周国华 |
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| 作者单位： | 1.中国地质科学院地球物理地球化学勘查研究所，河北廊坊 065000；2.中国地质调查局发展研究中心，北京 100037 |
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| 基金项目： | 中国地质调查局项目“全国尾矿地球化学调查与评价”（1212011087084）资助。 |
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| 摘 要： | 云南省个旧地区锡多金属矿以锡矿资源闻名于世界,自20世纪50年代以来,经历大规模矿产开发,目前共有尾矿库31座,积存尾矿超过1.9亿t。面对数量如此巨大的潜在资源与污染源,查明尾矿中元素的含量、分布特征及其控制因素显得尤为重要。本文针对个旧地区尾矿类型复杂、成矿及共伴生元素多样等特点,以"面上控制、重点剖析"的原则,采用概查和详查两种调查方法,对矿区内的尾矿库进行了系统的地球化学调查,完成了19个尾矿库的概查和2个尾矿库的详查工作,取得了如下认识:(1)个旧矿区不同尾矿库间的物质成分和元素含量差别较大。同一尾矿库中元素分布也不均匀,在横向上和垂向上均有分异性;(2)入选矿石类型、排砂过程中的重力分选作用和选矿工艺的差异是影响尾矿库中元素分布的主要因素;(3)总结和梳理了一套尾矿地球化学调查方法技术;(4)个旧矿区尾矿中成矿与伴生元素Sn、Cu、Fe、Pb、Zn、In、Ga、As等元素含量普遍较高,具有巨大潜在利用价值,同时As、Cd、Cu、Pb和Zn等元素对周边环境存在较大风险,值得重视。
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| 关 键 词： | 尾矿 地球化学调查 个旧 锡多金属矿 |
Geochemical survey and assessment of tailings of the Gejiu tin-polymetallic mining area, Yunnan Province |
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| PAN Han-jiang,CHENG Zhi-zhong,YANG Rong,ZHOU Guo-hua.Geochemical survey and assessment of tailings of the Gejiu tin-polymetallic mining area, Yunnan Province[J].Chinese Geology,2015(4):1137-1150. |
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| Authors: | PAN Han-jiang CHENG Zhi-zhong YANG Rong ZHOU Guo-hua |
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| Abstract: | Abstract: The Gejiu mining area of Yunnan Province is world-famous for tin resources. In total, there are 31 tailing dams in the study area, and the amount of tailings exceeds 190 million tons which could be either further resources or a hazard of contamination. Therefore, it is evidently critical to thoroughly investigate the concentrations and distribution of elements in the tailings and the related controlling factors. In this paper, both geochemical reconnaissance and detailed geochemical survey of tailings were conducted. Totally the work of reconnaissance for 19 tailing dams and the detailed survey for 2 tailing dams were accomplished. The following conclusions have been reached: (1) The material compositions and element concentrations differed significantly between different tailing dams in Gejiu. The distribution of elements in the tailing dams shows anisotropy vertically and horizontally; (2) Types of ores, gravitational segregation and beneficiation have great influence on the distribution of elements in the tailing dams; (3) A suite of methods and techniques for geochemical survey of tailings has been established. (4) The concentrations of Sn, Cu, Fe, Pb, Zn, In, Ga, As and Cd in tailings are high, which implies that more attention should be paid to the great potential value and environmental risks of tailing dams in Gejiu. |
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| Keywords: | tailings geochemical survey Gejiu tin-polymetallic mining area |
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