摘要
针对某SCR脱硝催化剂中W和V的高效浸出,研究了采用微波辅助氢氧化钠浸出废SCR催化剂中的W和V。结果表明:在微波功率600 W、反应时间1 h、反应温度60℃、氢氧化钠浓度40%、液固体积质量比7.5/1条件下,SCR脱硝催化剂中的W、V浸出率分别可达89.96%、96.32%;碱浸渣经4 mol/L HCl溶液浸出1 h后,可得到纯度为98.76%的TiO_(2);与传统水浴加热方式相比,微波加热浸出方式不仅可以提高SCR脱硝催化剂对钨和钒的浸出率,同时还可大大缩短试验反应时间,为SCR脱硝催化剂中W和V的绿色有效浸出提供技术支持。
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,TiO_(2)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.
作者
曾玲
于明明
杨德龙
吴迪
原伟泉
ZENG Ling;YU Mingming;YANG Delong;WU Di;YUAN Weiquan(School of Resources and Environmental Engineering,Jiangxi University of Science and Technology,Ganzhou 341000,China;Institute of Resource Utilization and Rare Earth Development,Guangdong Academy of Sciences,Guangzhou 510650,China;School of Resources and Architectural Engineering,GanNan University of Science and Technology,Ganzhou 341000,China)
出处
《湿法冶金》
CAS
北大核心
2024年第2期134-139,共6页
Hydrometallurgy of China
基金
江西省自然科学基金资助项目(20224BAB204038,20232BAB214039)
中国科协青年人才托举工程项目(2022QNRC001)
江西省教育厅科学技术研究项目(GJJ2203617)
广东省科学院发展专项资助项目(2021GDASYL-2021010103059)。
关键词
废SCR催化剂
微波
辅助
氢氧化钠
浸出
钒
钨
spent SCR catalyst
microwave
assist
alkaline
leaching
tungsten
vanadium
作者简介
第一作者:曾玲(2004-),女,本科,主要研究方向为矿物加工;通信作者:于明明(1990-),男,博士,副教授,主要研究方向为固废综合利用。E-mail:mingmy1990@163.com。
