Selective Leaching of Vanadium and Nickel in Metal Oxides Obtained from Orimulsion Ash

오리멀젼회(灰)로부터 제조(製造)된 중간(中間) 생성물(生成物)로부터 바나듐과 니켈의 선택적(選擇的) 침출(浸出)

  • Kim, Eun-Young (Resources Recycling, University of Science & Technology) ;
  • Lee, Sung-Ki (Resources Recycling, University of Science & Technology) ;
  • Park, Kyung-Ho (Minerals & Materials Processing Division, Korea Institute of Geoscience & Mineral Resources)
  • 김은영 (과학기술연합대학원대학교 자원순환공학) ;
  • 이성기 (과학기술연합대학원대학교 자원순환공학) ;
  • 박경호 (한국지질자원연구원, 자원활용소재연구부)
  • Published : 2006.12.27

Abstract

As a basic study on recovery of valuable metals such as vanadium and nickel from metal oxide obtained from waste orimulsion ash, we conducted selectively leaching of vanadium and nickel using $Na_2CO_3$ leaching and ammoniacal leaching, respectively. The 97% of vanadium was selectively leached at an optimum experimental condition, 50g/L $Na_2CO_3$, pulp density 50g/L, and 35% $H_2O_2$ 50ml/L, $25^{\circ}C$... for 1 hr, whereas no nickel was leached. In ammoniacal leaching study, 95% of nickel was selectively leached at the optimal experimental condition, $NH_4OH\;2M,\;(NH_4){_2}SO_4$ 1.5M, pulp density 50g/L, 25, for 4 hr along with 3% of vanadium.

오리멀젼 소각 후 발생되는 배출물 중 함유되어 있는 바나듐과 니켈의 유가금속을 회수, 재활용하기 위한 기초연구로써, 오리멀젼회로부터 얻어진 바나듐과 니켈함유 중간생성물을 사용해서 $Na_2CO_3$ 침출과 암모니아 침출로부터 바나듐과 니켈을 각각 선택적으로 침출하는 방법에 대하여 검토하였다. 실험결과 $Na_2CO_3$ 침출의 경우 $Na_2CO_3$ 50g/L, 반응시간 1시간, 반응온도 $25^{\circ}C$ 그리고 산화제로서 35% $H_2O_2$를 50ml/L 첨가 시 바나듐은 97%이상 침출되었으나, 니켈은 녹지 않았다. 한편 암모니아 침출의 경우, $NH_4OH$ 2M, $(NH_4){_2}SO_4$ 1.5M, 광액비 50g/L, 반응시간 4시간, 반응온도 25에서 니켈과 바나듐은 각각 95%, 3% 침출되었다.

Keywords

References

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