通讯机构：
[Tan, Kaixuan] U;Univ South China, Sch Nucl Resources Engn, Hengyang 421001, Peoples R China.
关键词：
Complex surfactant;Leaching kinetics;Resin adsorption and elution;Low permeable sandstone uranium deposit;In-situ leaching of uranium mining
摘要：
Applications of a complex surfactant developed in-house to in-situ leaching of low permeable sandstone uranium deposits are described based on results from agitation leaching, column leaching, resin adsorption, and elution experiments using uranium containing solution from the in-situ leaching site. The results of agitation leaching experiments show that adding surfactant with different concentrations into leaching solution improves the leaching rate of uranium. The maximum leaching rate of uranium from agitation leaching reached 92.6% at an added surfactant concentration of 10 mg/l. Result of column leaching experiment shows that adding surfactant with varying concentrations into leaching solutions increased the permeability coefficient of ore-bearing layer by 42.7-86.8%. The leaching rate of uranium from column leaching increased by 58.0% and reached 85.8%. The result of kinetic analysis shows that for the extraction of uranium controlled by diffusion without surfactant the apparent rate constant 0.0023/d changed to 0.0077/d for the extraction with surfactant controlled by both diffusion and surface chemical reactions. Results from resin adsorption and elution experiments show that there was no influence on resin adsorption and elution of uranium with an addition of 50 mg/l surfactant to production solution from in-situ leaching. The adsorption curve, sorption capacity of resin, recycling of resin remained the same as without adding any surfactant. Introducing complex surfactant to leaching solution increased the peak concentration of uranium in eluents, reduced the residual uranium content in resin, and promoted the elution efficiency. The method of using a complex surfactant for in-situ leaching is useful for low permeable sandstone uranium deposits. (C) 2014 Elsevier B.V. All rights reserved.
作者机构：
[Kaixuan TAN; Yanshi XIE; Yang HU; Chunguang LI; Zhaozhao WANG; Fei YANG] School of Nuclear Resource Engineering, University of South China, Hengyang 421001 China
通讯机构：
[Kaixuan TAN] S;School of Nuclear Resource Engineering, University of South China, Hengyang 421001 China
会议名称：
The 14th Quadrennial Interbational Association on the Genesis of Ore Deposium Symposium(第十四届国际矿床成因协会大会)
会议时间：
2014-08-19
会议地点：
昆明
会议论文集名称：
The 14th Quadrennial Interbational Association on the Genesis of Ore Deposium Symposium(第十四届国际矿床成因协会大会)论文集
摘要：
<正>Sandstone type uranium deposits(STUD)were an important uranium resource in the world.The exploration and exploitation of leachable STUD act an important role in world uranium supply with the develo
