基于LCA方法的铁矿烧结过程环境影响评价  

Environmental impact assessment of iron ore sintering process based on LCA method

作　　者：易正明[1,2] 陈卓 覃佳卓 聂礼 杜东 张东升 YI Zhengming;CHENZhuo;QIN Jiazhuo;NIE Li;DU Dong;ZHANG Dongsheng(Key Ixiboratory for Ferrous Metallurgy and Resources Utilization of Ministry of Education,Wuhan University of Science and Technology,Wuhan 430081,Hubei,China;National-provincial Joint Engineering Research Center of High Temperature Materials and Lining Technology,Wuhan University of Science and Technology,Wuhan 430081,Hubei,China;Shuicheng Iron and Steel Group Co.,Ltd.,Liupanshui 553000,Guizhou,China)

机构地区：[1]武汉科技大学钢铁冶金与资源利用省部共建教育部重点实验室,湖北武汉430081 [2]武汉科技大学高温材料与炉衬技术国家地方联合工程研究中心,湖北武汉430081 [3]水城钢铁集团有限公司,贵州六盘水553000

出　　处：《烧结球团》2022年第2期88-95,共8页Sintering and Pelletizing

基　　金：国家自然科学基金资助项目(51604199)。

摘　　要：为研究铁矿烧结工序对环境造成的影响,以贵州某钢铁企业烧结厂为研究对象,综合烧结生产过程资源环境的属性特点,采用IMPACT World+影响评价方法选取10个影响类别进行生命周期分析及环境影响评价。以系统稳定运行1 a为功能单位构建烧结生命周期清单,按照清单结果进行LCA分析,识别其环境减排潜力。结果表明:能源消耗、人体毒性和全球变暖为铁矿烧结生产中贡献最大的环境影响,3项潜值分别为2.22×10^(-10)、9.89×10^(-11)和8.82×10^(-11),在终结点评价中人体健康、生态系统健康和能源消耗影响潜值依次为1.97×10^(-4)DALY、0.205 PDF·m^(2)·a和2.01 GJ。In order to study the impact of iron ore sintering process on the environment,taking the sintering plant of an iron and steel enterprise in Guizhou as the research object,the attributes and characteristics of resources and environment in the sintering production process are synthesized,and the IMPACT World+impact assessment method is used to select 10 impact categories for life cycle analysis and environmental impact assessment.The life cycle inventory of sintering is constructed in a functional unit of 1 year stable operation of the system,and LCA analysis is conducted according to the inventory results to identify its environmental emission reduction potential.The results show that energy consumption,human toxicity and global warming has the biggest environmental impacts of iron ore sintering production,with three potential values of 2.22×10^(-10),9.89×10^(-11) and 8.82×10^(-11),respectively,the potential values of human health,ecosystem health and energy consumption in the endpoint evaluation are 1.97×10^(-4) DALY,0.205 PDF·m^(2)·a and 2.01 GJ.

关 键 词：铁矿烧结 生命周期评价 环境影响评价 节能减排 

分 类 号：X701[环境科学与工程—环境工程]