황산지르코늄 용액에서 PC88A에 의한 하프늄의 선택적 추출 분리

• Published in: 대한금속·재료학회지, 53(1) Vol. 53; no. 1; pp. 51 - 58
• Main Authors: 민수환, Soo Hwan Min, 이만승, Man Seung Lee
• Format: Journal Article
• Language: Korean
• Published: 대한금속재료학회 31.01.2015; 대한금속·재료학회
• Subjects: metals; separation; solvent extraction; 재료공학
• ISSN: 1738-8228; 2288-8241
• DOI: 10.3365/KJMM.2014.53.1.51

Separation of Zr (IV) and Hf (IV) is very important in the production of these metals for nuclear reactor applications. In this study, the effect of the concentration ratio of Zr to Hf on the selective extraction of Hf using PC88A was investigated in the sulfuric concentration range from 0.5 to 4 M. Hf was selectively extracted over Zr from sulfuric acid solution even at the metal concentration ratio of 100. As the concen- tration of sulfuric acid increased, the extraction percentage of Zr decreased while the separation factor increased. The addition of LIX63 to PC88A enhanced the extraction of Zr and the separation factor was decreased compared to single PC88A. Our results showed that it is possible to develop a process to separate Zr and Hf by selective extraction of Hf from sulfuric acid solution by using PC88A. (Received April 8, 2014)