Resources Recycling (자원리싸이클링)

The Korean Institute of Resources Recycling (한국자원리싸이클링학회)
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Recovery of Molybdenum and Vanadium from Acidic Leaching Solution of Spent Catalysts by Solvent Extraction

폐촉매(廢觸媒) 산성침출액(酸性浸出液)으로부터 용매추출(溶媒抽出)에 의한 몰리브덴과 바나듐의 회수(回收)

  • Nguyen, Hong Thi (Department of Advanced Material Science & Engineering, Institute of Rare Metal, Mokpo National University) ;
  • Lee, Man Seung (Department of Advanced Material Science & Engineering, Institute of Rare Metal, Mokpo National University)
  • 응우엔 티홍 (목포대학교 공과대학 신소재공학과 희유금속연구소) ;
  • 이만승 (목포대학교 공과대학 신소재공학과 희유금속연구소)
  • Received : 2013.02.15
  • Accepted : 2013.04.16
  • Published : 2013.08.30
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Abstract

The recovery of molybdenum and vanadium from acid leaching solutions of spent catalysts using solvent extraction has been investigated. Among various acid leaching solutions, sulfuric acid solution is found to be adequate for the recovery of these two metals. The extraction and stripping behavior of the two metals in the absence and presence of other impurity metals by various types of extractants such as cationic, solvating, amine and a mixture of cationic and solvating extractants was discussed. Each type of extractants has advantage and disadvantage in terms of the possibility of separation and of forming a third phase. Among the various types of extractants, a mixture of cationic and solvating extractants seems to be the most promising extractant system for the separation of Mo and V from the acid leaching solutions of spent catalysts.

폐촉매를 침출한 산성용액으로부터 용매추출에 의해 몰리브덴과 바나듐을 회수하는 공정을 조사하였다. 여러 침출액중 황산용액이 두 금속의 회수측면에서 가장 적합하다. 다른 불순물이 혼합된 용액과 순수한 몰리브덴과 바나듐용액에서 여러 추출제(양이온, 중성, 아민, 양이온과 중성 혼합추출제)에 의한 두 금속의 추출 및 탈거 거동을 검토하였다. 각 추출제는 금속 분리와 제 3상의 형성측면에서 장단점을 지니고 있다. 폐촉매의 산성 침출액으로부터 몰리브덴과 바나듐을 분리회수하는데 있어서 양이온과 중성의 혼합추출제가 가장 적합하다.

Keywords

References

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