Rare Earth Element Extraction, Recovery, Separation and Purification

A special issue of Metals (ISSN 2075-4701). This special issue belongs to the section "Extractive Metallurgy".

Deadline for manuscript submissions: 30 April 2026 | Viewed by 739

Special Issue Editor


E-Mail Website
Guest Editor
Institute of Material and Chemistry, Ganjiang Innovation Academy, Chinese Academy of Sciences, Ganzhou 341000, China
Interests: rare earths; separation; purification
Special Issues, Collections and Topics in MDPI journals

Special Issue Information

Dear Colleagues,

With the growth in demand for rare earths in the field of cutting-edge materials and technologies, it makes sense to extract and recover them from minerals and secondary resources and subject them to further separation and purification. Please consider submitting your excellent research to this Special Issue of Metals devoted to aspects of rare earth extractive metallurgy. This also includes green and low-carbon hydrometallurgy processes, along with newly synthesized separation materials and the recycling and re-utilization of waste resources with green, harmless and economical process. Possible topics include mechanisms and extraction, recovery, separation and purification technologies. Suggested application areas include rare earths and associated elements such as uranium, thorium, radium, iron, aluminum, etc. Studies on both primary and recycled resources will be considered.

Dr. Shengting Kuang
Guest Editor

Manuscript Submission Information

Manuscripts should be submitted online at www.mdpi.com by registering and logging in to this website. Once you are registered, click here to go to the submission form. Manuscripts can be submitted until the deadline. All submissions that pass pre-check are peer-reviewed. Accepted papers will be published continuously in the journal (as soon as accepted) and will be listed together on the special issue website. Research articles, review articles as well as short communications are invited. For planned papers, a title and short abstract (about 250 words) can be sent to the Editorial Office for assessment.

Submitted manuscripts should not have been published previously, nor be under consideration for publication elsewhere (except conference proceedings papers). All manuscripts are thoroughly refereed through a single-blind peer-review process. A guide for authors and other relevant information for submission of manuscripts is available on the Instructions for Authors page. Metals is an international peer-reviewed open access monthly journal published by MDPI.

Please visit the Instructions for Authors page before submitting a manuscript. The Article Processing Charge (APC) for publication in this open access journal is 2600 CHF (Swiss Francs). Submitted papers should be well formatted and use good English. Authors may use MDPI's English editing service prior to publication or during author revisions.

Keywords

  • rare earths
  • extraction
  • recovery
  • separation
  • purification

Benefits of Publishing in a Special Issue

  • Ease of navigation: Grouping papers by topic helps scholars navigate broad scope journals more efficiently.
  • Greater discoverability: Special Issues support the reach and impact of scientific research. Articles in Special Issues are more discoverable and cited more frequently.
  • Expansion of research network: Special Issues facilitate connections among authors, fostering scientific collaborations.
  • External promotion: Articles in Special Issues are often promoted through the journal's social media, increasing their visibility.
  • Reprint: MDPI Books provides the opportunity to republish successful Special Issues in book format, both online and in print.

Further information on MDPI's Special Issue policies can be found here.

Published Papers (1 paper)

Order results
Result details
Select all
Export citation of selected articles as:

Research

18 pages, 3330 KB  
Article
Effect of Height Difference Between Adjacent Liquid Injection Holes on Wetting Body Evolution of Ion-Absorbed Rare Earth In Situ Leaching Ore
by Qiang Huang, Chunlei Zhang, Yunzhang Rao, Guozhu Rao, Jiazheng Wan, Yangjun Xie and Qiande Lai
Metals 2026, 16(2), 232; https://doi.org/10.3390/met16020232 - 19 Feb 2026
Viewed by 361
Abstract
This study investigated wetting body migration and blind area distribution variations under different height differences (Δh) using indoor experiments and numerical simulations. Results show that the Δh of the injection hole shifts the wetting body intersection backward. Due to the increase in Δh, [...] Read more.
This study investigated wetting body migration and blind area distribution variations under different height differences (Δh) using indoor experiments and numerical simulations. Results show that the Δh of the injection hole shifts the wetting body intersection backward. Due to the increase in Δh, the vertical migration of the wetting peak at the No. 1 liquid injection hole accelerates, and the horizontal migration tends to be stable, which indicates that the Δh promotes the vertical seepage by changing the hydraulic gradient, which is beneficial to accelerate the leaching process. The migration of the wetting peak presents the characteristics of ‘fast first and then slow’, and it is easy to form a blind area in the later stage of leaching. When Δh is 0 and 3 cm, the blind area is concentrated between the two holes in the upper part of the ore heap. When Δh increases to 5 and 7 cm, the blind area expands to the top of the No. 1 hole. The simulation results show that although the increase in Δh can accelerate the recovery of water pressure in the near-end injection hole, it will increase the difference in leaching efficiency between ‘near-end’: when Δh is small, the wetting body diffuses symmetrically and the blind area is easy to eliminate; the increase in Δh leads to the asymmetric migration of the wetting body, and the remote area faces a significant risk of a blind area due to a low water pressure and low concentration. Full article
(This article belongs to the Special Issue Rare Earth Element Extraction, Recovery, Separation and Purification)
Show Figures

Figure 1

Back to TopTop