钢铁钒钛2025，Vol.46Issue(4)：18-26,9.DOI:10.7513/j.issn.1004-7638.2025.04.003
废SCR脱硝催化剂中V、Mo、W与Ti的选择性分离研究
Study on selective separation of V,Mo,W from Ti in spent SCR denitrification catalyst
摘要
Abstract
Spent V-Ti based SCR denitrification catalyst is a hazardous waste containing valuable metals such as V,Mo,W and Ti.It is of great significance to realize its harmless treatment and resource utilization.This study adopted processes such as Na2CO3 roasting-water leaching,NaOH roasting-water leaching,NaOH atmospheric pressure leaching,and NaOH pressurized leaching to treat spent V2O5-MoO3-WO3/TiO2 quaternary SCR denitration catalyst respectively,achieving the selective separation of active components such as vanadium,molybdenum,and tungsten from titanium.By studying the influ-ences of roasting parameters and leaching parameters on the leaching efficiencies of vanadium,molyb-denum,and tungsten,as well as the phases of the leaching residues,the NaOH roasting-water leaching process was determined as the optimal treatment process for the spent V2O5-MoO3-WO3/TiO2 quatern-ary SCR denitration catalyst.Under the optimized conditions,after NaOH roasting-water leaching,the leaching efficiencies of V,Mo and W reached 97.29％,99.33％and 87.57％,respectively,and the leach-ing residue with sodium hexatitanate(Na2Ti6O13)as the main phase was obtained.关键词
废SCR催化剂/钠化焙烧/碳酸钠/氢氧化钠/选择性分离Key words
spent SCR catalyst/sodium roasting-water leaching/Na2CO3/NaOH/selective separation分类
矿业与冶金引用本文复制引用
ZHANG Kailong,CHEN Liang,WANG Zhenghao,LUO Dongmei..废SCR脱硝催化剂中V、Mo、W与Ti的选择性分离研究[J].钢铁钒钛,2025,46(4):18-26,9.基金项目
研究得到了天府永兴实验室科技攻关重点项目(批准号:2023KJGG04)的资助以及四川大学后续能源材料与器件教育部工程研究中心开放课题资助. （批准号:2023KJGG04）
