LIU Gui jian 1;PENG Zi cheng 1;YANG Ping yue 1;WANG Gui liang 2;ZHANG Wei 3 (1.Department of Earth and Space Science;

• 1:University of Science and Technology of China
• 2:Hefei 230026
• 3: 2.Faculty of Resource and Environmental Science
• 4:China University of

Abstract：

Based on the genetic analysis of trace elements in the coal of Yanzhou mining district and the summary of previous conclusions,the concentration processes of trace elements are divided into three stages,i.e.primary,secondary and hysterogenic stages.The main factors,which impact on concentration and migration of trace elements,are analyzed.The results indicated that during the coal formation,which began from plants growing to peat swamp and to types of coal rank,there are many factors influencing migration and concentration of trace elements.The factors mainly include plant types,chemical conditions,climate conditions,seawater encroachment,magma hydrothermalism during coalification,and matter exchange between coal and rocks of roof and floor.Therefore,the generation and concentration of trace elements in coals are controlled by many geological factors during every coalification stages.

Key Words： trace element;coal;factors of concentration

Abstract:

Keywords:

Foundation: 国家自然基金资助项目 ;;编号 :49776 30 7

Authors: LIU Gui jian 1;PENG Zi cheng 1;YANG Ping yue 1;WANG Gui liang 2;ZHANG Wei 3 (1.Department of Earth and Space Science;

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