LIU Hanbin;MA Zhibin;GUO Yanxia;CHENG Fangqin;

• 1:Institute of Resources and Environmental Engineering
• 2:Shanxi University
• 3:Shanxi Coal Geological Bureau

Abstract：

The coal-associated metal minerals refer to metal minerals with the industrial value or industrial utilization prospects in coal mining that are co-produced or associated with coal in coal-bearing strata. Shanxi is a large coal province in China,which has abundant coal resources and huge reserves. The annual coal output accounts for about 25% of the national annual coal output. The annual thermal power generation accounts for more than 90% of the total power generation in the province. The Shanxi coal and coal-based solid waste contain a large number of the metal minerals for industrial development and utilization,such as lithium,gallium and aluminum in coal. However,there is no research on the distribution of the associated metal minerals in Shanxi coal from the perspective of the province,which greatly limits the strategic development of the coal-related companion minerals from the macro policy level. Based on the existing research data of lithium,gallium and aluminum in Shanxi coal-bearing strata,the distribution characteristics and metallogenic prospects of lithium,gallium and aluminum in Shanxi coal system were analyzed and discussed. It is believed that the lithium content in Taiyuan Formation coal in Shanxi coal is significantly larger than that in Shanxi group,while the aluminum and gallium is smaller than that in the Shanxi group. The content of lithium gallium in coal seam gangue is significantly larger than that in coal seam. In Shanxi Ningwu Coalfield Pingshuo mining area,Qinshui coalfield Jincheng mining area,Huoxi coalfield Huozhou mining area,Xishan coalfield Gujiao mining area,Taiyuan Formation main coal seam and the gangue of Xishan coalfield,the Lithiumhas good mineralization potential for coal-related associated lithium; The abnormally high values of gallium and aluminum in Shanxi coal are common,and the gallium and aluminum widely are distributed in the central and northern parts of Shanxi Province,and decrease from from north to south as a whole. The Shanxi coal-based resources of lithium-gallium-aluminum have huge reserves of the fly ash and high-alumina coal gangue in Shanxi Power Plant,which has good prospects for industrial development. It is urgent to demarcate the boundary grade and minimum industry grade of lithium and gallium in coal seams and lithium and in Shanxi fly ash in order to achieve resource recycling and high value utilization. As two special mineral resources,the comprehensive utilization of fly ash and coal gangue should be made from the source to the top layer design,according to local conditions,classify and classify cascade utilization.

Key Words： Shanxi coal;co-occurrence;lithium;gallium;aluminum;development and utilization

Abstract:

Keywords:

Foundation: 国家重点研发计划资助项目(2017YFB0603101);; 山西省煤基低碳科技重大专项资助项目(MC2016-05)

Authors: LIU Hanbin;MA Zhibin;GUO Yanxia;CHENG Fangqin;

DOI: 10.13226/j.issn.1006-6772.19030415

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