KINETICS OF LEACHING PROCESS OF SELLA URANIUM ORE MATERIAL, SOUTH EASTERN DESERT, EGYPT | ||||
| Nuclear Sciences Scientific Journal | ||||
| Article 13, Volume 2, Issue 1, 2013, Page 175-182 PDF (1.56 MB) | ||||
| Document Type: Original Article | ||||
| DOI: 10.21608/nssj.2013.30993 | ||||
 View on SCiNiTO | ||||
| Authors | ||||
| YASSER M. KHAWASSEK; MOHAMED H. TAHA | ||||
| Nuclear Materials Authority,Cairo, Egypt | ||||
| Abstract | ||||
| The leaching of uranium from Sella uranium ore using hydrochloric acid solution has been studied. The effect of different parameters such as leaching time, hydrochloric acid concentration, liquid/ solid mass ratio, reaction temperature, mechanical stirring speed are investigated in order to optimize various process parameters for maximizing the recovery of uranium. The maximum percentage uranium leaching of 96 % is achieved after 15 min of contact time leaching using 3.0 M hydrochloric acid and 4/ 1 liquid/ solid mass ratio at 26 °C with 400 rpm mechanical stirring speed. The experimental data are well interpreted with a shrinking core model with diffusion control through a porous product layer. By using the Arrhenius expression, the apparent activation energy for the uranium leaching reaction is evaluated. | ||||
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