Preparation of Highly Pure Y2O3 from Rees Concentrate of Gabal El-Faliq Granitoid Rocks, South Eastern Desert, Egypt. | ||||
| The Bulletin Tabbin Institute for Metallurgical Studies (TIMS) | ||||
| Volume 108, Issue 1, January 2019, Page 16-29 PDF (592.64 K) | ||||
| Document Type: Original research papers | ||||
| DOI: 10.21608/tims.2019.189874 | ||||
 View on SCiNiTO | ||||
| Author | ||||
| D. I. Zaki* | ||||
| Nuclear Materials Authority, P. O. Box: 530 El Maadi, Cairo, Egypt | ||||
| Abstract | ||||
| The present work aims to study the processing characteristics of the geologic ore material under consideration to prepare leach liquor suitable for the recovery of highly pure Y oxide concentrate. Ammonium sulfate roasting method was applied upon the study geologic ore material and selectively recovers 88.6% of total REEs. Several roasting parameters were investigated to optimize the selective dissolution of REEs. Since, from the foregoing results, it can be concluded that, the maximum dissolution efficiency, % of REEs from Gabal (G.) El-Faliq ore material by roasting with (NH4)2SO4 was conducted at Solid/Reagent ratio: 1/2, Roasting time: 2 hrs. and Roasting temperature: 600°C. From the latter, 91% of Y content from prepared RE(NO3)3 solution using 2M TBP, has been recovered at pH of 1.5 by using 2M of TBP / Kerosene for 9 min. as contact time and O/A ratio of 1/1. More than 98% of the loaded Y was regenerated using 3M HR2RSOR4R at A/O ratio of 2/1 and contact time of 25 min. From the latter, highly pure Y2O3 Rwas prepared after oxalate precipitation. | ||||
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