Proceedings of the Korean Institute of Resources Recycling Conference (한국자원리싸이클링학회:학술대회논문집)

The Korean Institute of Resources Recycling (한국자원리싸이클링학회)
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Regeneration of $FeCl_3$ from a Spent Etching Solution Containing Nickel by Solvent Extraction

니켈 함유 에칭폐액으로부터 용매추출에 의한 $FeCl_3$의 재생

  • Lee, Kyoung-Joo (Material Science and Technology Division, Korea Institute of Science and Technology) ;
  • Lee, man-Seung (Department of Advanced Materials Science & Engineering, Mokpo National University) ;
  • Oh, Young-Joo (Material Science and Technology Division, Korea Institute of Science and Technology)
  • 이경주 (한국과학기술연구원 금속공정연구부) ;
  • 이만승 (목포대학교 공과대학 신소재공학과) ;
  • 오영주 (한국과학기술연구원 금속공정연구부)
  • Published : 2004.05.20
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Abstract

Solvent extraction and stripping experiments were conducted to separate iron from a spent $FeCl_3$ etching solution containing nickel. In the extraction, PC88A, MIBK and Alamine336 were tested as an extractant in various diluents. Alamine336 salt in toluene led to the highest extraction percentage of iron. Stripping percentage of iron from the loaded organic by Alamine336 increased with decreasing HCl conentration of stripping solution and with increasing volume ratio of aqueous to organic. In the operation of bench scale mixer-settler, 7 extraction stage with 1.0M Alamine336 salt in toluene and 10 stripping stage with 0.01M HCl solution resulted in a stripped solution with 133g/L of iron and in a raffinate with most of nickel together with a small amount of iron when the flow rate ratio of organic to aqueous was 7.

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