Preparation of Highly Pure Y2O3 from Rees Concentrate of Gabal El-Faliq Granitoid Rocks, South Eastern Desert, 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 (NHR4R)R2RSOR4R 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(NOR3R)R3R 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 YR2ROR3 Rwas prepared after oxalate precipitation.