Water-washing of iron-ore sintering gas cleaning residue for beneficial reutilization as secondary construction material

摘要：

　　Iron-ore sintering gas cleaning residue is an emerging type of hazardous waste due to its enrichment of heavy metals.Beneficial reutilization as secondary construction material is supposed to be a possible solution,if volatile component,mainly K and Na chlorides could be removed to acceptable level.This study investigated the effects of water-washing process on the removal of alkali chlorides,as well as heavy metal.The water-washing condition was optimized as L/S=10,t=10~30min.95% of Cl and 90% of K and Na could be removed,meanwhile most of the eluted heavy metals were satisfied to the relevant discharge standard.The washed residue could be reutilized in cement production as alternative raw calcareous material or retarder.

关键词： Sintering gas cleaning residue Water-washing Chloride Heavy metals Secondary construction material

作者: Shiqin Xu Jianguo Liu Minying Song

作者单位: School of Environment, Tsinghua University, Beijing 100084.China;Key laboratory for solid waste management and environment safety ministry of education of China, Beijing 100084, China

会议类型: 国际会议

会议名称: The Seventh International Conference on Waste Management and Technology(第七届固体废物管理与技术国际会议(ICWMT7))

会议地点: 北京

会议语种:英文

页码: 244-252

在线出版日期: 2012-09-05（万方平台首次上网日期，不代表论文的发表时间）