Study on Chemical Speciation of Uranium in Samples from In-Situ Leaching Sandstone-Type Uranium Deposit in Xinjiang

详细信息   

• 责任者：Ma Qiang (School of Nuclear Resources and Nuclear Fuel Engineering ; University of South China ; Hengyang 421001 ; China) ; Feng Zhigang
• 刊名：Rock and Mineral Analysis
• 出版年：2012
• 卷期：31(3)
• 关键词：铀矿 ; uranium ores ; 新疆 ; Xinjiang
• 页码：p.501-506
• 图表：3 tables, 23 refs.
• 分类号：1001
• issnNo：ISSN0254-5357
• isbnNo：CN11-2131/TD

摘要

This paper presents a method of studying uranium speciation from in-situ leaching sandstone-type uranium deposits by a sequential extraction procedure and demonstrates its application to sandstone uranium exploration. The chemical extraction procedure was modified from Tessier. This study indicates that residual speciation is the primary component. The uranium extraction rate for uranium ore with a high proportion of residual uranium is lower and the extraction rate does not increase significantly by improving the dissolve acidity and oxidants.