湿法冶金2024，Vol.43Issue(2)：134-139,6.DOI:10.13355/j.cnki.sfyj.2024.02.004
微波辅助氢氧化钠浸出废SCR催化剂中的钨和钒
Microwave-assisted Leaching of Tungsten and Vanadium from Spent SCR Catalyst Using Sodium Hydroxide
摘要
Abstract
Aiming at the high efficiency leaching of W and V in a SCR denitration catalyst,the microwave assisted leaching of W and V in waste SCR catalyst was studied.The results show that under the conditions of microwave power of 600 W,reaction time of 1 h,reaction temperature of 60 ℃,sodium hydroxide concentration of 40％and liquid volume/solid mass ratio of 7.5/1,the leaching rates of W and V in SCR denitration catalyst can reach 89.96％and 96.32％,respectively.After leaching the alkaline leaching residue with 4 mol/L HCl solution for 1 h,TiO2 with a purity of 98.76％is obtained.Compared with the traditional water bath heating method,microwave heating leaching method can not only improve the leaching rate of tungsten and vanadium on SCR denitrification catalyst,but also greatly shorten the test reaction time,which provides a reliable technical basis for the green effective leaching of W and V in SCR denitrification catalyst.关键词
废SCR催化剂/微波/辅助/氢氧化钠/浸出/钒/钨Key words
spent SCR catalyst/microwave/assist/alkaline/leaching/tungsten/vanadium分类
矿业与冶金引用本文复制引用
曾玲,于明明,杨德龙,吴迪,原伟泉..微波辅助氢氧化钠浸出废SCR催化剂中的钨和钒[J].湿法冶金,2024,43(2):134-139,6.基金项目
江西省自然科学基金资助项目(20224BAB204038,20232BAB214039) （20224BAB204038,20232BAB214039）
中国科协青年人才托举工程项目(2022QNRC001) （2022QNRC001）
江西省教育厅科学技术研究项目(GJJ2203617) （GJJ2203617）
广东省科学院发展专项资助项目(2021GDASYL-2021010103059). （2021GDASYL-2021010103059）
