• 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Journal of Geochemical Exploration: Journal of the Association of Exploration Geochemists >Study of harmful trace elements and rare earth elements in the Permian tectonically deformed coals from Lugou Mine, North China Coal Basin, China
【24h】

Study of harmful trace elements and rare earth elements in the Permian tectonically deformed coals from Lugou Mine, North China Coal Basin, China

机译：中国华北煤水池卢沟矿煤层矿床有害微量元素及稀土元素研究

获取原文
获取原文并翻译 | 示例
           
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

The No.2-1 coal (Early Permian-Shanxi Formation) in the Lugou Mine, Xinmi coalfield, Northern China, is a characteristic tectonically deformed coal. A total of 15 coal bench samples were considered, including 13 bench samples, one roof, and one floor. In this study, the content, distribution, and occurrence of harmful trace elements and rare earth elements (REE) (HR) were investigated by low-temperature ashing prior to powder X-ray diffraction (LTA-XRD), X-ray fluorescence (XRF), inductively coupled plasma mass spectrometry (ICP-MS), and field emission scanning electron microscopy equipped with energy-dispersive X-ray analysis (FESEM-EDX). The results showed that the No. 2-1 coal is a low-medium ash yield (23%) and ultralow sulfur content (0.32%) meager coal. Minerals detected in this coal included clay minerals such as kaolinite, illite, and smectite, and non-clay minerals such as quartz, calcite, ankerite, tobelite, pyrite, and anatase. Compared with the Clarke values, selenium is unusually enriched (6.51 mu g/g, CC = 130.20.), and arsenic is enriched (13.15 mu g/g, CC = 7.31), while the content of other elements is normal: mercury (0.24 mu g/g, CC = 2.40), vanadium (49.09 mu g/g, CC = 0.36), chromium (38.77 mu g/g, CC = 0.39), manganese (16.90 mu g/g, CC = 0.02), lead (21.65 mu g/g, CC = 1.73), cobalt (13.98 mu g/g, CC = 0.56), nickel (22.76 mu g/g, CC = 0.30), and Sigma REE (96.20 mu g/g, CC = 1.40). It is necessary to pay special attention to selenium and arsenic due to their potential impact on environment. By analyzing the trace element contents in vertical and adjacent layers, and the REE distribution patterns, we concluded that the coal seam has turned into a typical tectonically deformed coal due to the strong tectonic destruction and plastic deformation, yet we found no evidence that this could cause local enrichment or redistribution of the HR in the coal seam. The analysis of the correlation between the HR and ash yield, percentage of minerals, and main inorganic element content using FESEM-EDX showed that the majority of vanadium, chromium, lead, nickel, and REE mainly originate from kaolinite or illite, while mercury and selenium originate from pyrite.
机译：中国北方新煤炭煤矿庐矿（山山初山）的2-1煤炭（初二叠山溪形成）是一个特色的根本变形煤。总共考虑了15个煤台样本，包括13个台式样品，一个屋顶和一层。在该研究中，通过在粉末X射线衍射（LTA-XRD），X射线荧光（ XRF），电感耦合等离子体质谱（ICP-MS），以及配备能量分散X射线分析（FESEM-EDX）的场发射扫描电子显微镜。结果表明，2-1煤是低中型灰分（23％）和超级硫含量（0.32％）微薄煤。在该煤中检测到的矿物质包括粘土矿物，如高岭石，illite和蒙脱土，非粘土矿物，如石英，方解石，尾，纺织品，硫铁矿和锐钛矿。与Clarke值相比，硒异常富集（6.51μg/ g，Cc = 130.20。），富含砷（13.15μg/ g，cc = 7.31），而其他元素的含量是正常的：汞（ 0.24μg/ g，cc = 2.40），钒（49.09μg，cc = 0.36），铬（38.77μg/ g，cc = 0.39），锰（16.90μg/ g，cc = 0.02），铅（21.65μg，cc = 1.73），钴（13.98μg，cc = 0.56），镍（22.76μg/ g，cc = 0.30）和sigma ree（96.20μg/ g，cc = 1.40）。由于它们对环境的潜在影响，有必要特别注意硒和砷。通过在垂直和相邻层中分析痕量元件内容物，我们得出结论，由于强大的构造破坏和塑性变形，煤层已经变成了典型的根本变形煤，但我们发现没有证据导致煤层中的局部浓缩或重新分布。使用FESEM-EDX的人力资源和灰分比与灰屈光度，矿物质百分比和主要无机元素含量的分析表明，大多数钒，铬，铅，镍和REE主要来自高岭石或伊利石，而水星和汞硒源自黄铁矿。

著录项

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱：kefu@zhangqiaokeyan.com

京公网安备：11010802029741号 ICP备案号：京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有

  • 客服微信

  • 服务号