Study on optimization of actinide oxalate precipitation process in a vortex flow reactor

被引：7

作者：

Kumar, K. Suresh ^{[1
]}

Tripathi, V. M. ^{[2
]}

Sreekumar, G. ^{[1
]}

Sugilal, G. ^{[3
]}

机构：

[1] Bhabha Atom Res Ctr, Special Nucl Recycle Facil, Nucl Recycle Board, Bombay, Maharashtra, India

[2] Bhabha Atom Res Ctr, Tarapur Reproc Plant, Tarapur, India

[3] Bhabha Atom Res Ctr, Technol Dev Div, Bombay, Maharashtra, India

来源：

SEPARATION SCIENCE AND TECHNOLOGY | 2017年 / 52卷 / 05期

关键词：

Vortex flow reactor; actinide oxalate; precipitation; PUREX;

D O I：

10.1080/01496395.2016.1268627

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

Oxalate precipitation process is globally accepted and is the current choice for conversion of actinide nitrates to their oxides. A vortex flow reactor with magnetic stirrer is found to be a better option for a hassle-free operation of batch as well continuous actinide reconversion process. Utilization of magnetic stirrer as an alternate for the conventional mechanical stirrer eliminates corrosion-related issues as none of the metal parts are in contact with nitric acid as well as oxalic acid solution. Moreover, this alternative system ensures a maintenance-free process. Optimization of various process conditions in a vortex reactor was accomplished using cerium nitrate as a surrogate for actinide nitrate and the results obtained were compared with that of pitched blade mechanical stirrer. About 40 L of thorium nitrate solution was successfully precipitated by the optimized procedure in a vortex reactor.

引用

页码：930 / 935

页数：6

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