摘要
以河南新密煤田芦沟煤矿二1煤层为研究对象,通过XRD、XRF、ICP-MS等分析技术研究了在低温灰化条件下稀土元素的含量及赋存特征。结果表明,芦沟煤矿二1煤层中稀土元素总含量范围为21.85~287.62μg/g,均值为96.20μg/g;本煤层中稀土元素呈现明显的轻稀土富集、重稀土亏损的现象,判断主要来源于陆源碎屑;煤中稀土元素含量与煤中黏土矿物含量有关,且与伊利石的含量最为紧密;中、新生代的构造运动虽然破坏了煤层的结构,但对煤中稀土元素的含量和分布特征无明显影响;部分分层中的稀土元素含量已达到工业开采要求,具有一定的开发和利用价值。
The content of rare earth elements and their occurrence characteristics under low temperature ashing conditions in Lugou coal mine of Xinmi coalfield were studied by XRD,XRF and ICP-MS analysis techniques.The results show that the total content of rare earth elements(REE) in No.1 coal seam of Lugou coal mine is 21.85~287.62 μg/g,with a mean value of 96.20 μg/g.The rare earth elements in the coal seam show obvious light rare earth enrichment and heavy rare earth loss,which is mainly derived from terrigenous clastics.The content of rare earth elements in coal is related to the content of clay minerals in coal,and it is most closely related to the content of illite.Although the tectonic movement of the Mesozoic and Cenozoic destroys the structure of coal seams,it has no obviows effect on the content and distribution characteristics rare earth elements in coal.The content of rare earth elements in some stratification has satisfied the requirements of industrial mining,and has certain development and utilization value.
作者
罗钟庚
李春辉
汪师逵
梁汉东
Luo Zhonggeng;Li Chunhui;Wang Shikui;Liang Handong(State Key Laboratory of Coal Resoures and Safe Mining,Beijing 100083,China;College of Geoscience and Surveying Engineering,China University of Mining&Technology-Beijing,Beijing 100083,China;Lugou Coal Mine,Zhengzhou Coal Industry Co.Ltd,Zhengzhou Henan 452370,China)
出处
《矿业科学学报》
2020年第2期140-149,共10页
Journal of Mining Science and Technology
基金
煤炭资源与安全开采国家重点实验室自主研究课题(SKLCRSM17ZZ01)
国家自然科学基金(41371449,41772157)。
