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.