Resources Recycling (자원리싸이클링)

The Korean Institute of Resources Recycling (한국자원리싸이클링학회)
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Solvent Extraction of Zr(IV) and Hf(IV) from Sulfuric Acid Solutions by Acidic Extractants and Their Mixtures with TBP

황산용액에서 양이온계 추출제 및 TBP와의 혼합추출제에 의한 지르코늄(IV)과 하프늄(IV)의 용매추출

  • Wang, Ling Yun (Department of Advanced Material Science & Engineering, Institute of Rare Metal, Mokpo National University) ;
  • Lee, Man Seung (Department of Advanced Material Science & Engineering, Institute of Rare Metal, Mokpo National University)
  • 왕링윈 (목포대학교 공과대학 신소재공학과) ;
  • 이만승 (목포대학교 공과대학 신소재공학과)
  • Received : 2016.01.18
  • Accepted : 2016.02.15
  • Published : 2016.04.30
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Abstract

Separation of Zr(IV) and Hf(IV) from sulfuric acid solutions was investigated by extraction with several acidic extractants such as Versatic acid, LIX 63, and Cyanex 301. From strong sulfuric acid solutions, the separation of Zr(IV) and Hf(IV) by Versatic acid and LIX 63 was not possible, while selective extraction of Hf(IV) over Zr(IV) was obtained with Cyanex 301. However, the extraction percentage of the two metals was much lower compared to that by D2EHPA. Mixing of TBP with Cyanex 301 and D2EHPA led to negative effect on the extraction and separation of the two metal ions. The difference in the extraction reaction and separation selectivity between HCl, $HNO_3$ and $H_2SO_4$ media with each extractant was discussed.

황산용액에서 양이온 추출제인 Versatic acid, LIX 63 및 Cyanex 301을 사용하여 지르코늄(IV)과 하프늄(IV)의 분리실험을 수행했다. 진한 황산용액에서 Versatic acid와 LIX 63으로 두 금속을 분리할 수 없으나, Cyanex 301에 하프늄(IV)이 선택적으로 추출되었다. 그러나 Cyanex 301에 의한 두 금속의 추출율은 D2EHPA에 비해 매우 낮았다. TBP를 Cyanex 301과 D2EHPA에 혼합하면 두 금속의 추출과 분리에 역효과를 보였다. 염산, 질산 및 황산용액에서 상기 추출제에 의한 두 금속의 추출반응과 분리효율의 차이점을 고찰하였다.

Keywords

References

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