Recovery of Rare Earth Elements from Ion-Adsorption Deposits Using Electrokinetic Technology: The Soil Conductivity Mechanism Study
文献类型：期刊论文
| 作者 | Kang, Shichang3,4,5; Ling, Bowen1,2; Liang, Xiaoliang3,4,5; Wang, Gaofeng3,4,5; Xu, Jie3,4,5; Xu, Yongjin3,4,5; Zhu, Runliang3,4,5; Wei, Jingming3,4,5; Zhu, Jianxi3,4,5; He, Hongping3,4,5 |
| 刊名 | MINERALS
 |
| 出版日期 | 2024-05-01 |
| 卷号 | 14期号:5页码:16 |
| 关键词 | electrokinetic mining rare earth elements recovery soil conductivity Archie's equation |
| DOI | 10.3390/min14050491 |
| 通讯作者 | Wang, Gaofeng(wanggaofeng@gig.ac.cn) |
| 英文摘要 | Rare earth elements (REEs) are essential raw materials for modern industries but mining them has caused severe environmental issues, particularly the recovery of heavy REEs (HREEs) from ion-adsorption deposits (IADs). Very recently, an emerging technology, electrokinetic mining (EKM), has been proposed for the green and efficient recovery of REEs from IADs. However, the conduction mechanism of the weathering crust soil, which is also a prerequisite for EKM, remains unclear, making the EKM process unpredictable. Here, we systematically investigated the conductivity of weathering crust soil in the presence of light REEs (LREEs, i.e., La3+ and Sm3+) and HREEs (Er3+ and Y3+), respectively. Results suggested that the voltage was dynamically and spatially redistributed by the movement of REEs and water during EKM, and the conventional assumption of the linear distribution of voltage leads to an inaccurate description of soil voltage. We proposed an improved Archie's equation by coupling the mechanisms of liquid phase and solid-liquid interface conduction, which can predict soil conductivity more precisely. Moreover, the extended Archie's equation is able to recalculate the voltage distribution at distinct times and spaces well during EKM. More importantly, the water content in field-scale weathered-crust soils can be retrieved by the newly proposed Archie's equation, which helps optimize the leaching wells and improve the recovery rate of REE. This study focuses on the conduction mechanism of weathering crust soil, which provides a theoretical basis for better use of the EKM technology and promotes mining efficiency fundamentally. |
| WOS关键词 | ELECTRICAL-CONDUCTIVITY ; CLAY ; WATER ; CRUST |
| 资助项目 | National Natural Science Foundation of China ; GIGCAS |
| WOS研究方向 | Geochemistry & Geophysics ; Mineralogy ; Mining & Mineral Processing |
| 语种 | 英语 |
| WOS记录号 | WOS:001233275200001 |
| 资助机构 | National Natural Science Foundation of China ; GIGCAS |
| 源URL | [http://dspace.imech.ac.cn/handle/311007/95495]  |
| 专题 | 力学研究所_流固耦合系统力学重点实验室(2012-) |
| 通讯作者 | Wang, Gaofeng |
| 作者单位 | 1.Univ Chinese Acad Sci, Sch Engn Sci, Beijing 100049, Peoples R China 2.Chinese Acad Sci, Inst Mech, Beijing 100190, Peoples R China 3.Univ Chinese Acad Sci, Beijing 100049, Peoples R China 4.CAS Ctr Excellence Deep Earth Sci, Guangzhou 510640, Peoples R China 5.Chinese Acad Sci, Guangzhou Inst Geochem, CAS Key Lab Mineral & Metallogeny, Guangdong Prov Key Lab Mineral Phys & Mat, Guangzhou 510640, Peoples R China |
| 推荐引用方式 GB/T 7714 | Kang, Shichang,Ling, Bowen,Liang, Xiaoliang,et al. Recovery of Rare Earth Elements from Ion-Adsorption Deposits Using Electrokinetic Technology: The Soil Conductivity Mechanism Study[J]. MINERALS,2024,14(5):16. |
| APA | Kang, Shichang.,Ling, Bowen.,Liang, Xiaoliang.,Wang, Gaofeng.,Xu, Jie.,...&He, Hongping.(2024).Recovery of Rare Earth Elements from Ion-Adsorption Deposits Using Electrokinetic Technology: The Soil Conductivity Mechanism Study.MINERALS,14(5),16. |
| MLA | Kang, Shichang,et al."Recovery of Rare Earth Elements from Ion-Adsorption Deposits Using Electrokinetic Technology: The Soil Conductivity Mechanism Study".MINERALS 14.5(2024):16. |
入库方式： OAI收割
来源：力学研究所
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