Disposal of zinc extraction residues via iron ore sintering process:an innovative resource utilization  

作　　者：Chun-long Fan Cheng-yi Ding Tao Yang Yun-fei Luo Yi-fan Wang Qian Li Hong-ming Long 

机构地区：[1]School of Metallurgical Engineering,Anhui University of Technology,Ma'anshan 243002,Anhui,China [2]Zhongye Changtian International Engineering Co.,Ltd.,Changsha 410205,Hunan,China [3]Key Laboratory of Metallurgical Emission Reduction and Resources Recycling(Ministry of Education),Anhui University of Technology,Ma'anshan 243002,Anhui,China

出　　处：《Journal of Iron and Steel Research International》2024年第7期1636-1645,共10页钢铁研究学报（英文版）

基　　金：supported by the National Natural Science Foundation of China (52204331);Natural Science Foundation of Anhui Province Youth Project (2208085QE145);Open Fund of Key Laboratory of Metallurgical Emission Reduction and Resource Utilization,Ministry of Education (JKF20-03).

摘　　要：Zinc extraction residue,a solid waste generated from the treatment of zinc-containing dust in rotary kilns,is commonly stockpiled in steel companies for extended periods.It poses significant disposal challenges and environmental pollution risks.So far,research on the treatment of zinc extraction residues has been slow,inadequate,and sporadic.For this gap,a novel approach was proposed to effectively treat the zinc extraction residue via the iron ore sintering process.It was feasible to add 1 wt.%of zinc extraction residues to the sintering raw materials.The more adequate mineralization reaction resulted in higher yield and tumbler indexes,despite a slight decrease in sintering speed.Although this may result in a slight decrease in sintering speed,the more complete mineralization reaction leads to improved sintering yield and tumbler index.Interestingly,the addition of zinc extraction residues reduced the CO and NO_(x) concentrations in the sintering flue gas.Thus,the iron ore sintering process provided a viable solution for resource utilization and environmentally friendly treatment of zinc extraction residues.

关 键 词：Zinc extraction residue Iron ore sintering CO-PROCESSING Waste utilization Gas pollutant reduction 

分 类 号：TF046.4[冶金工程—冶金物理化学]