摘要
煤中微量元素的赋存状态决定了元素在煤加工利用和在表生条件下的地球化学行为,但煤中同一种元素可以有不同形式的赋存状态,不同的元素也可以拥有同一种赋存状态。煤中如黄铁矿、方铅矿等各种硫化物中含有的环境有害元素最多,在我国西南地区一些煤田的煤层中部分元素如Ge,As和S等则具有较高的有机亲合性,增加了洗选去除的难度,环境效应也更大。
The modes of occurrence of elements decide the behavior of geochemistr y under the surface condition.For one element there could be more than one mode of occurrence,while many elements can share one mode of occurrence.Some mineral s such as pyrite contain many hazardous elements.In some parts of southwest Chin a the elements Ge,As and S could have strong organic affinity,which make it di fficult to separate from coal and serious impacts on environment.
出处
《中国煤田地质》
2002年第B07期14-17,共4页
Coal Geology of China
基金
国家自然科学基金资助项目(编号49172114
49872054)
