Separation and Recovery of Ce, Nd and V from Spent FCC Catalyst

FCC 폐촉매로부터 Ce, Nd 및 V의 분리 회수 프로세스

  • Jeon, Sung Kyun (Department of Chemical Engineering, Dong-A University) ;
  • Yang, Jong Gyu (Department of Chemical Tech., Chang-Won National University) ;
  • Kim, Jong Hwa (Department of Chemical Tech., Chang-Won National University) ;
  • Lee, Sung Sik (Department of Chemical Engineering, Dong-A University)
  • 전성균 (동아대학교 화학공학과) ;
  • 양종규 (창원대학교 공업화학과) ;
  • 김종화 (창원대학교 공업화학과) ;
  • 이성식 (동아대학교 화학공학과)
  • Received : 1997.05.13
  • Accepted : 1997.06.27
  • Published : 1997.08.10


The major constituents in spent FCC catalysts are Si, Al, Fe, Ti, alkali metals and some others. The spent catalyst is also composed small amounts of rare metals such as Ce, Nd, Ni and V. The selective adsorption and concentration of Ce and Nd from the leaching solution of spent FCC catalysts with sulfuric acid($0.25mol/dm^3$) were carried out by the column method with a chelate resin having a functional group of aminophosphoric acid type. Ce and Nd were separated from eluate liquor containing Al, Nd and V by the precipitation process with oxalic acid. Vanadium is purified from chloride ion coexistance by solvent extraction, employing tri-n-octyl phosphine oxide as extractant with Al in the raffinate solution. Rare metals with the purity of 99 percent were obtained from the spent FCC catalyst.



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