SELECTIVE METHOD OF RECOVERING VALUABLE METAL FROM WASTE CATALYST OF DESULFURIZATION WITH EXCELLENT RECOVERY AND SEPARATION EFFICIENCY

摘要

PURPOSE: A collecting method of valuable metals from a desulfurization waste catalyst is provided to efficiently collect valuable metals by using soda roasting, water leaching and solvent extraction. CONSTITUTION: A collecting method of valuable metals from a desulfurization waste catalyst comprises the following steps: manufacturing water precipitating solution by precipitating vanadium and molybdenum which contains the desulfurization waste catalyst in water(s110); solvent extracting vanadic acid ion and molybdate ion from the water precipitate solution by adding an organic solvent which includes tricapryly methyl ammonium chloride(s120); selectively stripping the molybdenum from the organic solution by using a demount solution having a balanced pH of 8-10(s130); and stripping the vanadium from the organic solvent by using a stripping solution(s140). [Reference numerals] (AA) Start; (BB) End; (S110) Manufacturing water precipitating solution; (S120) Extracting vanadic acid ion and molybdate ion; (S130) Selectively stripping the molybdenum (pH 8-10); (S140) Demounting the vanadium