Environmental risk assessment on slag and iron-rich matte produced from reducing-matting smelting of lead-bearing wastes and iron-rich wastes  

对含铅及高铁固体废物还原造锍熔炼炉渣和铁锍的环境评价（英文）

作　　者：柴立元[1,2] 吴见珣 吴延婧 唐朝波[1,2] 杨卫春[1,2] 

机构地区：[1]中南大学冶金与环境学院,长沙410083 [2]中南大学国家重金属污染防治工程技术研究中心,长沙410083

出　　处：《Transactions of Nonferrous Metals Society of China》2015年第10期3429-3435,共7页中国有色金属学报（英文版）

基　　金：Project(2012BAC12B02)supported by the National Key Technology R&D Program of China;Project(2014FJ1011)supported by the Key Projects of Science and Technology of Hunan Province,China;Project(2011AA061001)supported by the National High-tech Research and Development Program of China

摘　　要：A new process for utilization of hazardous lead-bearing wastes and iron-rich wastes by reducing-matting smelting has been developed.The slag（SG） and the iron-rich matte（IRM） are the main by-products from reducing-matting smelting of lead-bearing wastes and iron-rich wastes.The environmental risk of heavy metals（Cd,Zn,Pb and As） in the main by-products versus the charging material for reducing-matting smelting（CM） has been systematically assessed using leaching toxicity test,the three-stage sequential extraction procedure of European Community Bureau of Reference（BCR） and Hakanson Potential Ecological Risk Index Method（PERI）.The results demonstrate that the ecological risk level of heavy metals for SG and IRM is significantly reduced after the reducing-matting smelting process compared with that for CM.还原造锍熔炼技术是可综合回收利用高铁、含铅固体废物的一种新技术。其主要副产物是炉渣和铁锍。采用浸出毒性实验、BCR三步连续浸提以及Hakanson潜在生态风险评价等方法系统地对还原造锍主要副产物和进炉炉料中重金属(Cd、Zn、Pb和As)的环境风险进行评价。结果表明,经过还原造锍熔炼后,水淬渣和铁锍中重金属潜在的环境生态风险明显比进炉炉料的低。

关 键 词：reducing-matting smelting lead-bearing waste heavy metal environmental risk 

分 类 号：X82[环境科学与工程—环境工程]