摘要
为实现废渣减量化,提出了一种熔池熔炼处理废渣回收铁的新工艺。在熔炼温度1575°C、保温时间20 min、C/Fe摩尔比1.6、碱度1.2的优化条件下,铁金属化率和回收率分别为99.79%和99.61%。获得含93.58%Fe、0.021%S、0.11%P、1.38%C、0.22%Si、0.01%Pb和0.031%Zn的生铁,达到国家炼钢生铁标准,可用于炼钢。
A new bath smelting process was proposed to recover iron for solid wastes reduction.99.79%of iron metallization,99.61%of iron recovery,pig iron with93.58%Fe,0.021%S,0.11%P,1.38%C,0.22%Si,0.01%Pb and0.031%Zn were achievedafter the wastes were smelted at1575°C for20min under C/Fe molar ratio of1.6and basicity of1.2.The produced pig iron could beused in steel-making.This study provides a way for recycling iron from smelting slag and hydrometallurgical residue.
作者
李燕春
袁莹珍
刘恢
彭兵
刘志楼
Yan-chun LI;Ying-zhen YUAN;Hui LIU;Bing PENG;Zhi-lou LIU(School of Metallurgy and Environment, Central South University, Changsha 410083, China;Chinese National Engineering Research Centre for Control and Treatment of Heavy Metal Pollution,Central South University, Changsha 410083, China)
基金
Project(51574295) supported by the National Natural Science Foundation of China
Project(2014FJ1011) supported by the Key Project of Science and Technology of Hunan Province,China
Project(2012GS430201) supported by the Science and Technology Program for Public Wellbeing,China
Project supported by the Co-Innovation Center for Clean and Efficient Utilization of Strategic Metal Mineral Resources,China
关键词
铅渣
铁提取
熔池熔炼
生铁
lead slag
iron extraction
bath smelting
pig iron
