Applied Chemistry for Engineering (공업화학)

The Korean Society of Industrial and Engineering Chemistry (한국공업화학회)
권호 표지

Selective Ni Recovery from Spent Ni-Mo-Based Catalysts

니켈-몰리브데늄 성분계 폐촉매로부터 니켈의 선택적 회수

  • Lee, Tae Kyo (National Research Laboratory, School of Display & Chemical Engineering, Yeungnam University) ;
  • Han, Gi Bo (National Research Laboratory, School of Display & Chemical Engineering, Yeungnam University) ;
  • Yoon, Suk Hoon (National Research Laboratory, School of Display & Chemical Engineering, Yeungnam University) ;
  • Lee, Tae Jin (National Research Laboratory, School of Display & Chemical Engineering, Yeungnam University) ;
  • Park, No-Kuk (Institute of Clean Technology, Yeungnam University) ;
  • Chang, Won Chul (KOCAT Inc.)
  • 이태교 (영남대학교 디스플레이화학공학부) ;
  • 한기보 (영남대학교 디스플레이화학공학부) ;
  • 윤석훈 (영남대학교 디스플레이화학공학부) ;
  • 이태진 (영남대학교 디스플레이화학공학부) ;
  • 박노국 (영남대학교 청정기술연구소) ;
  • 장원철 ((주) 코캣)
  • Received : 2008.09.26
  • Accepted : 2008.10.30
  • Published : 2008.12.10

Abstract

The objective of this study is to optimize the leaching conditions of sequential leaching and extracting processes for selective Ni recovery from spent Ni-Mo-based catalyst. The selective Ni recovery process consists of two processes of leaching and extracting process. In this 2-step process, Ni component is dissolved from solid spent Ni-Mo-based catalyst into leaching agent in leaching process and sequentially extracted to Ni complex with an extracting agent in the extracting process. The solutions of nitric acid ($HNO_3$), ammonium carbonate ($(NH_4)_2CO_3$) and sodium carbonate ($Na_2CO_3$) were used as a leaching agent in leaching process and oxalic acid was used as an extracting agent in extracting process. $HNO_3$ solution is the most efficient leaching agent among the various leaching agent. Also, the optimized leaching conditions for the efficient and selective Ni recovery were the leaching temperature of $90^{\circ}C,\;HNO_3$ concentration of 6.25 vol% and elapsed time of 3 h. As a result, Nickel oxalate having the highest yield of 88.7% and purity of 100% was obtained after sequentially leaching and extracting processes under the optimized leaching conditions.

Keywords

spent Ni-Mo-based catalysts;optimization of leaching condition;selective nickel recovery;wet recovery process

File

Download PDF

References

  1. J. H. Kim, J. G. Yang, and S. S. Lee, J. of Korean Inst. of Resources Recycling, 4, 2 (1995).
  2. S. Toda, Shigen Sozai Gakkaishi, 105, 265 (1989). https://doi.org/10.2473/shigentosozai.105.265
  3. K. H. Park, D. Mohapatra, and B. R. Reddy, Hazard. Mater, 138, 311 (2006). https://doi.org/10.1016/j.jhazmat.2006.05.115
  4. M. Marafi, Furimsky, Erdol Erdgas Kohle, 121, 93 (2005).
  5. N. Uekawa, M. Endo, K. Kakegawa, and Y. Sasakia, Phys. Chem. Chem. Phys, 2, 5485 (2000). https://doi.org/10.1039/b003611k
  6. 국내 석유화학 폐촉매로부터 유가금속의 회수, 한국자원연구소 연구보고서 (1994).
  7. K. Inoue, Z. Pingwei, and H. Tsuyama, Prepr. ACS Div. Pet. Chem, 38, 77 (1993).
  8. A. J. Chaudhary, J. D. Donaldson, S. C. Boddington, and S. M. Grimes, Hydrometallurgy, 34, 137 (1993). https://doi.org/10.1016/0304-386X(93)90031-8
  9. S. K. Jeon, J. G. Yang, J. H. Kin, and S. S. Lee, J. of Korean Ind. Eng. Chem, 8, 679 (1997).
  10. Y. Mizutani, Y. Hirashima, Y. Makiyama, and T. Shirahase, Kag. Kog. Symp. Ser., 31, 36 (1992).
  11. T. J. Kim, I. S. Cha, H. C. Lee, and W. S. Ahn, J. of Korean Ind. & Eng. Chemistry, 5, 925 (1994).
  12. A. Shukla, P. N. Maheshwari, and A. K. Vasishtha, JAOCS, 56, 565 (1979). https://doi.org/10.1007/BF02660235