【摘要】 引入LCA(生命周期评价法)中产品"生命周期"的概念,系统地对煤炭开采的副产品——煤矸石整个"生命周期"中微量元素的析出过程进行了研究。结果表明:煤矸石的整个生命周期是一个微量元素析出—富集—析出的长期过程,随着风化程度的增强,煤矸石的环境影响逐渐增大。更多还原

【Abstract】 Introducing the concept of product life cycle in LCA(life cycle assessment),trace elements precipitation process was studied systematically in the whole life cycle of coal gangue as a by-product of coal mining.The results show that trace elements in coal gangue have a long-term course which is shown as precipitation-enrichment-precipitation in the whole period of coal gangue.With increase of weathering degree,environmental impact of coal gangue is gradually strengthened.更多还原