| 摘要 |
<p>PURPOSE: Provided is a method of recovering valuable metals such as vanadium, tungsten and titanium contained in the waste denitrification catalyst by separation using the leaching process of the alkali solution. CONSTITUTION: The method comprises; applying the leaching process to the waste catalyst with one or more than one solution of NaOH, KOH, NH4OH, Ca(OH)2 to recover Ti, W and V in order to obtain TiO2 as solid and W and V as aqueous phase; and carrying on the solvent extraction/hydrate precipitation method to recover the melted-out W and V liquid as liquid phase.</p> |
