Life Cycle Assessment of Internal Recycling Options of Steel Slag in Chinese Iron and Steel Industry  

作　　者：CHEN Bo YANG Jian-xin OUYANG Zhi-yun 

机构地区：[1]State Key Laboratory of Urban and Regional Ecology, Research Center for Eco-Environmental Sciences,Chinese Academy of Sciences, Beijing 100085, China

出　　处：《Journal of Iron and Steel Research International》2011年第7期33-40,共8页

基　　金：Item Sponsored by Environmental Protection Public Welfare Scientific Research Project of China(200809025);National Basic Research Program of China(2005CB724206)

摘　　要：The internal recycling process of BOF slag which is one of the huge solid wastes from iron and steel indus try was emphasized. Based on the four scenarios of different internal recycling strategies for BOF slag, life cycle assessment （LCA） as a valuable tool for industrial solid waste management was applied to analyze the contribution to reducing environmental impacts and resources burdens for each scenario. The global warming potential （GWP） re- sults of the four scenarios show that the scenario which performs best in carbon reduction cuts off 14.2G of GWP impacts of the worst scenario. The results of this study show that the optimized internal recycling process of BOF slag can improve the environmental performance of crude steel. It is important to assess and choose an appropriate strategy to recycle BOF slag from LCA perspective to reduce the environmental impacts and resource burdens as much as possible.The internal recycling process of BOF slag which is one of the huge solid wastes from iron and steel indus try was emphasized. Based on the four scenarios of different internal recycling strategies for BOF slag, life cycle assessment （LCA） as a valuable tool for industrial solid waste management was applied to analyze the contribution to reducing environmental impacts and resources burdens for each scenario. The global warming potential （GWP） re- sults of the four scenarios show that the scenario which performs best in carbon reduction cuts off 14.2G of GWP impacts of the worst scenario. The results of this study show that the optimized internal recycling process of BOF slag can improve the environmental performance of crude steel. It is important to assess and choose an appropriate strategy to recycle BOF slag from LCA perspective to reduce the environmental impacts and resource burdens as much as possible.

关 键 词：life cycle assessment sustainable development close-loop recycling steel BOF slag 

分 类 号：X757.05[环境科学与工程—环境工程] TB472[一般工业技术—工业设计]