Resources Recycling (자원리싸이클링)

The Korean Institute of Resources Recycling (한국자원리싸이클링학회)
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Solvent Extraction of Zirconium and Hafnium from Hydrochloric Acid solution by LIX 63 and Cyanex 301

염산용액(鹽酸溶液)에서 LIX 63 및 Cyanex 301에 의한 지르코늄과 하프늄의 용매추출(溶媒抽出)

  • Min, Soo-Hwan (Department of Advanced Material Science & Engineering, Mokpo National University, Institute of Rare Metal) ;
  • Lee, Man-Seung (Department of Advanced Material Science & Engineering, Mokpo National University, Institute of Rare Metal)
  • 민수환 (목포대학교 공과대학 신소재공학과) ;
  • 이만승 (목포대학교 공과대학 신소재공학과)
  • Received : 2013.05.23
  • Accepted : 2013.07.01
  • Published : 2013.12.31
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Abstract

Solvent extraction experiments have been conducted to separate Zr(IV) and Hf(IV) from chloride solutions by using LIX63 and Cyanex301. Zr and Hf were extracted by cation exchange reaction in the pH range from 1 to 4 by the extratants. Since the extraction percentage of the two metals was similar to each other, it was difficult to separate the two metals by using LIX63 or Cyanex301. Use of a mixture of LIX63/TBP or Cyanex301/TBP resulted in antagonism in our experimental ranges. Our data showed that there is some possibility of separating the two metals by the mixture of Cyanex301 and TBP because the extraction percentage of Hf decreased more rapidly than that of Zr as HCl concentration was decreased. The mixture of LIX63 and Cyanex301 had little effect on the separation of the two metals.

염산용액에서 지르코늄과 하프늄을 분리하기 위해 LIX63과 Cyanex301을 단독 또는 혼합하여 용매추출실험을 수행했다. 상기 추출제를 단독으로 사용하는 경우 염산용액의 pH 1에서 4사이의 범위에서 두 금속은 양이온 추출반응에 의해 추출되었으며, 추출율이 비슷하여 분리가 어렵다. LIX63과 TBP, Cyanex301과 TBP의 혼합용매를 사용하는 경우 본 실험범위에서 역상승효과가 나타났다. Cyanex301과 TBP의 혼합용매의 경우에 염산농도가 증가함에 따라 지르코늄보다 하프늄의 추출율이 급격히 감소하여 분리가능성이 존재하였다. 한편 Cyanex301과 LIX63의 혼합용매의 경우 두 금속의 분리에 효과가 없었다.

Keywords

References

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