Institute of Geology and Mining Engineering, Xinjiang University, Urumqi
School of Earth Resources, China University of Geosciences, Wuhan

大南湖煤田是我国重要的大型煤田,前人研究中发现大南湖煤田煤中关键金属有富集潜力,通过系统收集、梳理煤中关键金属方面的研究成果,结合部分测试数据,阐述了煤中镓、锗等关键金属元素在大南湖煤田的分布及富集机理,镓、锗元素均表现为顶底板含量较低,在中部煤层富集的现象。分析煤中镓锗含量与灰分产率、煤灰中Al2O3和Fe2O3的关系,认为研究区镓元素为无机矿物和有机质共同作用的复合成因,锗元素应当为风化搬运或地下水动力搬运周边物源进而形成,推测大南湖煤田中镓锗主要来自于南部的觉罗塔格造山带。

Dananhu coal field is an important large-scale coal field in China. Many scholars have found the enrichment of gallium, germanium and other key metals in the coal of Dananhu coal field. On the basis of previous studies, this paper systematically collected and sorted out the research results of key metals in coal, and combined with some test data, expounded the distribution and enrichment causes of key metal elements such as gallium and germanium in coal in Dananhu coalfield. Gallium and germanium are shown to have low content in the top and bottom, and are enriched in the middle coal seam. The relationship between gallium and Ge content in coal and ash yield, Al2O3 and Fe2O3 in coal ash is analyzed. It is concluded that gallium in the study area is a composite origin of inorganic minerals and organic matter, and germanium should be formed by weathering transport or groundwater dynamic transport of surrounding materials. It is inferred that gallium and Ge in Dananhu coalfield mainly comes from the southern Juelotage orogenic belt.

新疆维吾尔自治区重点实验室开放课题(2023D04056)

1 区域地质背景
2 煤中关键金属分布特征
2.1 镓元素
2.2 锗元素
3 大南湖煤田煤中金属元素富集成因分析
3.1 镓元素
3.2 锗元素
4 结 语

尚疆一,冯烁,田继军.新疆大南湖煤田一井田煤中镓锗元素富集机理研究[J].煤炭加工与综合利用,2024(3):53-57.