EARTH

[2901-14-10] Solvent extraction separation of Mo from hydrochloric acid leaching solution of spent super alloy by Alamine 336

○DAYOUNG KIM¹, JONGGWAN AHN¹, MINSUK KIM¹ (1. Jung Won University)

Chairman：Kyoungkeun Yoo （Korea Maritime and Ocean University）, Wei Sheng Chen (National Cheng Kung University)

Keywords:Solvent Extraction , Alamine336, Recovery, Molybdenum, Stripping

Solvent extraction experiments for the separation and recovery of Mo from hydrochloric acid leaching solution of spent super alloy by Alamine 336 were carried out. The effects on the sort and concentration of extractants, pH of aqueous phase, concentration of HCl in aqueous phase and impurities. The artificial solutions of Mo were prepared by dissolving ammonium molybdenite and Alamine304-1, Cyanex272 and D2EHPA were used solvent extractants by distilled kerosene. The extraction percentage of Mo by Alamine336 as cation extractant was higher than the other extractants as Cyanex272 and D2EHPA and the percentage is about 99 %. The extraction percentage of Mo at the range of 0-2 pH were about 99 % but the percentage was shown 0 % in the case of pH 4 by Alamine336 as cation extractant was higher than the other extractants as Cyanex272 and D2EHPA and the percentage is about 99 %. The effect of impurities as Al, Co and V was performed that Re was extracted to 99 % but the other metals were not extracted.