煤矸石中汞、砷的研究进展

摘要

煤矿生产过程中伴生的大量煤矸石不仅占用土地资源,而且在露天堆放的过程中其含有的有害微量元素汞、砷等会进入自然环境中,对环境造成严重污染.通过总结,介绍了国内外学者对于煤矸石中汞、砷的研究成果.主要从煤矸石中汞、砷含量,煤矸石加热汞、砷释放,煤矸石中汞、砷淋溶析出以及煤矸石中汞、砷赋存形态四个方面进行总结.以期为更多学者对于煤矸石中汞、砷的研究工作提供一定的帮助.%Coal gangue is an by-product generated from coal mining and coal washing.Huge quantities of coal gangue occupies a tremendous amount of land and causes serious environmental problems with harmful elements such as mercury and arsenic leaching out.In this paper,the research on mercury and arsenic of coal gangue was introduced.The contents,the release behaviors during coal gangue combustion,the leaching characteristics,the modes of occurrence of mercury and arsenic in coal gangue were summarized.