METHOD FOR RECOVERING VANADIUM AND TUNGSTEN FROM LEACH SOLUTION OF WASTE DENITRIFICATION CATALYST

摘要

The present invention relates to a method for recovering vanadium and tungsten from a leach solution of a waste denitrification catalyst, and more specifically, to a method for recovering vanadium and tungsten from a leach solution of a waste denitrification catalyst comprising the steps of: recovering vanadium by adding acid to a leach solution of a waste denitrification catalyst, and then adding a calcium compound, thereby precipitating the vanadium; and, after recovering the vanadium, recovering tungsten by adding acid to the remaining leach solution, and then adding a calcium compound, thereby precipitating the tungsten.