Development of a method for recovery of 233U from thorium oxalate cake in reconversion step of reprocessing of irradiated thorium rods |
| |
Authors: | P. Govindan A. Palamalai K. S. Vijayan K. Dhamodharan S. Subbuthai S. V. Mohan R. V. Subba Rao |
| |
Affiliation: | (1) Reprocessing Group, Indira Gandhi Centre for Atomic Research, Kalpakkam, 603 102, India |
| |
Abstract: | A method is developed for the selective leaching of 233U from a thorium oxalate cake. The leaching capacity of ammonium carbonate and nitric acid have been investigated, showing that (NH4)2CO3 leads to higher recovery. The maximum leaching efficiency is obtained using 0.5% ammonium carbonate, with a minimal thorium pick-up. A uranium recovery of 94% is obtained after three consecutive contact experiments in carbonate media, with minimal thorium uptake in the leachate. This process was applied to an actual plant stream, allowing the reduction of the 233U -activity from 5.64 to 0.3 Ci/g of thorium oxalate cake. |
| |
Keywords: | |
本文献已被 SpringerLink 等数据库收录! |
|