The Effect of Sulphide Minerals on Uranium Oxidation State in In-situ Leaching

被引：1
作者：
Pastukhov, A. M. [1 ]
Skripchenko, S. Yu. [1 ]
机构：
[1] Ural Fed Univ, Inst Phys & Technol, Dept Rare Met & Nanomat, 19 Mira St, Ekaterinburg 620002, Russia
来源：
IV INTERNATIONAL YOUNG RESEARCHERS' CONFERENCE: PHYSICS, TECHNOLOGIES AND INNOVATION (PTI-2017) | 2017年 / 1886卷
关键词：
D O I：
10.1063/1.5002932
中图分类号：
O59 [应用物理学];
学科分类号：
摘要：
The thermodynamic model of uranium in-situ leaching process at the stages of acidification and active leaching were investigated. It was demonstrated that in the frontal zone of acid leaching solutions reduction of uranium(VI) up to uranium(IV) was possible due to the nature of redox processes involving hydrogen sulfide. At the same time uranium was precipitated as U(OH)(4). In order to eliminate the negative influence of sulfide minerals and hydrogen sulfide, artificial oxidizers were proposed to be used at the both stages of in-situ leaching process, i.e. active leaching and acidification of new process cells.
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页数：5
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