Inconel713C 모사 용액으로부터 Alamine336을 통한 Mo의 용매추출분리를 위한 기초 연구
Basic Study for Solvent Extraction Separation of Mo from Synthetic Leaching Solution of Inconel713C by Alamine336
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Inconel713C에는 Ni 70 wt.%, Cr 11 ~ 14 wt.%, Al 5 ~ 6 wt.% 및 Mo 4 wt.% 가량 함유되어 있다. 본 연구에서는Inconel713C 모사용액으로부터 Mo을 회수하고자 용매추출공정을 이용하여 Mo 분리 추출하는 기초연구를 수행하였다. 실험변수로는 추출제의 종류 및 농도, 침출액의 평형 pH, H 2 SO 4 의 농도 및 불순물의 영향 실험을 수행하여 Mo을 회수하는 최적조건을 조사하였다. 음이온 추출제인 Alalmine336은 평형 pH 1 이상에서 99% 추출되고, 양이온 추출제인 Cyanex272는 96%의 추출률을 나타내어 Alamine336의 Mo 추출률이 우수하다. 또한 수상의 평형 pH가 1~ 4인 조건에서 Mo의 회수율은 Alamine336이 Cynex272 보다 높게 나타났다. 본 연구의 경우 용매추출공정을 이용한 Mo 회수의 최적조건은 평형 pH 1, Alalmine336 1 wt.%, 황산의 활성화처리 농도는 1 : 0.5이었다.
Abstract
Inconel713C which of a commercial Ni super alloy have the compositions of 70 wt.% Ni, 12 wt.% Cr, 6 wt.% Al and 4 wt.% Mo. In this study, solvent extraction has been performed to separate Mo from the synthetic leaching solution, formation of Inconel713C alloy similarly and is found the optimum conditions of recovery of Mo from the leaching solution. The effects of some variables, such as the nature and concentration of the extractants, H 2 SO 4 concentrations, and the presence of impurities were investigated. The extraction percentage of Mo by Cyanex272 is 96% in the condition of pH 1 and 4% of concentration of Cyanex272 but Alamine336 is 99% in the condition of the range of pH 1 to 4 and 1 wt.% of concentration of Alamine336. In the case of Alamine336, the extraction percentage of Mo is increased by increasing of the concentration of Alamine336. The optimum condition of this experiment is pH 1 in aqueous phase, 1% concentration of Alamine336 and activation ratio of H 2 SO 4 1:0.5.
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