失效脱硝催化剂钒钨协同提取工艺研究

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中图分类号：X701 文献标识码：A 文章编号：1008-9500(2026)03-0001-03

DOI:10.3969/j.issn.1008-9500.2026.03.001

Research on the Synergistic Extraction Process of Vanadium and Tungsten from Spent Denitrification Catalysts

CHEN Chongwen (Xiushui Derui Technology Co.,Ltd.,Jiujiang3324Oo,China)

Abstract:Inspentdenitrificationcatalysts,vanadiumand tungstenaredispersed inanoxidized state,resulting inlow conventionalleaching efficiency.Theexperimentusesacombinationofroastingactivationandacid leaching to increase metalexposureanddeterminetheoptimal leachingconditions.Theexperimentalresultsshowthattheleaching amountof vanadium and tungsten is significantly increased when the sulfuric acid concentration is 2.0mol/L ,the reaction temperature is 85 C ,and the reaction time is 3h .The experiment uses Tributyl Phosphate (TBP)extraction-back extraction technology to obtainhigh-purityvanadiumsolution,andcombinedwithpHvaluetungstenprecipitationproces,theseparatioefciency is stable.Intheresidue,theresidualamountofheavymetalsislow,andtheby-productscanbeusedfortungstenresource regeneration,and the overall process has good adaptability and resource utilization potential.

Keywords:spent denitrification catalyst; vanadium;tungsten; roasting activation; acid leaching

去除燃烧烟气中氮氧化物（ NOx ）是控制大气污染的关键环节，有助于减少酸雨和光化学烟雾。（剩余4844字）