摘要
白额井田内镓的平均含量为12.891 ppm～14.256 ppm,其含量随煤层从上到下逐渐升高。通过分析各煤层中镓的含量,可以得出镓的分布特征,大致为东北部和西南部高、中部低。采用相关系数法对镓与显微组分和灰分进行相关性分析,可知镓的含量与煤中的显微组分没有相关性,与灰分成正相关关系,说明镓主要赋存于粘土矿物中。结合镓的分布特征以及井田的地质情况和煤质煤岩特征,分析得出镓的富集和分布主要受陆源碎屑、沉积环境和地下水作用的影响。
The average content of Gallium in Bai＇e minefield is from 12. 891 ppm to 4. 256 ppm, the content increases from top to bottom with the coal seam. Analysed the Gallium content, it is conclu- ded that the distribution of Gallium, roughly the content of northeast and southwest area is high, and middle area is low. Using correlation coefficient method analyse the correlation between the content of Gallium with the maceral and ash, the content of Gallium has no relevance with coal macerals, and is positively correlated with ash. The results indicated that Gallium mainly exists in clay minerals. Com- bined with the distribution characteristics, the geology circumstance of the coal and the characteristics of coal quality and coal rock, the accumulation and distribution of Gallium are mainly controlled by the terrigenous clastic, sedimentary environment and groundwater.
出处
《河北工程大学学报（自然科学版）》
CAS
2012年第4期62-65,78,共5页
Journal of Hebei University of Engineering:Natural Science Edition
关键词
镓
分布特征
成因机制
白额井田
Gallium
distribution characteristics
formation mechanism
Bai＇e minefield
