الفهرس 
INTRODUCTION AND LITERATURE REVIEWOnly 14 pages are availabe for public view
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Abstract
The present work is concerned with the chemical
processing of El-Sella mineralization in order to recover its two metal values; namely uranium and
REEs. For this purpose acid leaching using sulfuric acid has been studied to determine the optimum
conditions to obtain their maximum possible leaching efficiencies. The obtained leach liquor was
then subjected to two solvent extraction circuits; viz a Trioctyl amine circuit for selective
anionic uranium extraction whereas in the second circuit, REEs have been extracted using the
cationic extractant (di-2-ethyl hexyl phosphoric acid, DEHPA).
Due to the specific nature of El-Sella ore material, which is highly argillic in a manner to
require a low solid/liquid ratio in the leaching circuit with consequent expensive solid/liquid
separation and filtration, it was found necessary to directly apply the solvent leaching procedure.
The latter was applied herein for uranium after proper acid pug leaching of the working ore
material using TOA.