Research progress on resource utilization of waste SCR denitration catalyst
LI Qiang1,2,3, CHEN Tie-jun2,4, LI Qi-yong1,3, WANG Ming-zhu1, LI Shi-long1
1. School of Resources and Chemical Engineering, San Ming University, Sanming 365004, Fujian, China; 2. School of Resources and Environmental Engineering, Wuhan University of Science and Technology, Wuhan 430081, Hubei, China; 3. Fujian Provincial Key Laboratory of Resources and Environment Monitoring and Sustainable Management and Utilization, Sanming 365004, Fujian, China; 4. Hubei Key Laboratory for Efficient Utilization and Agglomeration of Metallurgical Mineral Resources, Wuhan 430081, Hubei, China
Abstract：Waste SCR denitrification catalyst is a kind of hazardous waste and contains several valuable components. Through the analysis of the main methods, principle, approach, advantages and disadvantages on the resource utilization of waste catalyst at home and abroad, the effective method which can fully recycle vanadium, tungsten and titanium resources is as follow: leaching waste SCR denitration catalyst-recycling vanadium and tungsten from leaching solution by purifying and separating-recycling titanium from leaching residue by pickling and calcining, in which the alkaline roasting and water immersion method is more suitable for the leaching process, the chemical precipitation method or solvent extraction combined with chemical precipitation method is suitable for purification and separation process of leaching solution. In addition, the research direction of resource utilization of waste SCR denitration catalyst is prospected.
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2020, Vol. 30 
