摘要
分析我国主要聚煤区煤中微量元素研究进展及煤炭洗选过程中有害微量元素的脱除规律与脱除效果,旨在减少煤炭生产、加工、利用过程中有害微量元素对环境及人体健康所造成的危害。中国煤中微量元素的研究时空分布不均,对华北晚古生代聚煤区和华南晚二叠世及晚三叠世聚煤区中微量元素的研究较多,对西北早中侏罗世聚煤区及东北晚侏罗-早白垩世聚煤区中微量元素的研究相对较少。在洗选过程中大多数有害微量元素均有不同程度的脱除,说明通过洗选脱除煤中有害微量元素的路径切实可行。我国煤炭工业发展面临新形势,煤炭生产开发向西北、东部地区大型煤炭基地集中,限制开发对生态环境影响较大的煤炭资源。未来应加强对中国西北和东北大型煤炭生产基地有害微量元素的分布赋存及脱除潜力的研究。
The progresses on the distributions of trace elements in the main coal-accumulating areas were analyzed,the research was aimed at reducing the harm of harmful trace elements to the environment and human health in the process of coal production,processing and utilization.The studies of trace elements in China are unevenly presented in areas and times,as the studies in North China and South-Southwest China are plenty while those in Northwest China and Northeast China are relative low.Most trace elements could be removed in various proportions in coal preparation,therefore,it is a practical way to remove the trace elements through coal preparation.New situation is encountered for coal industry,the developments are concentrated in large coal bases in the northwest and northeast areas.Coal resources,which have great impacts to the ecosystems and environments are restrained to exploit.The researches on the occurrence and removability of trace elements should focus on the large coal bases in northwest and northeast areas.
作者
王越
孙南翔
WANG Yue;SUN Nanxiang(Beijing Research Institute of Coal Chemistry,China Coal Research Institute Corporation Ltd.,Beijing 100013,China;State Key Laboratory of Coal Mining and Clean Utilization,Beijing 100013,China;National Energy Technology & Equipment Laboratory of Coal Utilization and Emission Control,Beijing 100013,China)
出处
《煤质技术》
2021年第6期56-61,共6页
Coal Quality Technology
基金
国家自然科学基金资助项目(21875095)。
关键词
煤中有害微量元素
分布赋存
洗选脱除
聚煤区
脱除率
有机亲和性
harmful trace elements in coals
distribution and occurrence
coal preparation remove
coal-accumulating areas
removability
organic affinity
