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Separations
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Application of Magnetic Separation Technology in Green Production
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Application of Magnetic Separation Technology in Green Production

A special issue of Separations (ISSN 2297-8739). This special issue belongs to the section "Separation Engineering".

Deadline for manuscript submissions: 10 December 2024 | Viewed by 5673

Special Issue Editor

Prof. Dr. Jiangang Ku

E-Mail Website
Guest Editor
College of Zijin Mining, Fuzhou University, Fuzhou, China
Interests: magnetic separation theory; micromagnetic calculation; magnetic separation process simulation; fluid mechanics and development of high-gradient magnetic media box

Special Issue Information

Dear Colleagues,

Magnetic separation, as a green production technology, is one of the most attractive research fields in the literature. Magnetic separation is an important method for magnetic material separation based on different magnetic properties. It is commonly used in dry magnetic separation, wet magnetic separation, high-gradient magnetic separation, magnetic-gravity-floatation combined mineral processing, magnetic flocculation, etc.

A fundamental understanding of the mechanism of the magnetic field on magnetic particles and the effect of the magnetic field on the dynamic behavior of magnetic particles is very important for some interesting physical implications and promising industrial applications.

Therefore, it is my pleasure to invite you to contribute your research article, communication, or review to this Special Issue “Application of Magnetic Separation Technology in Green Production” dedicated to separation processes, modeling and analytical techniques of magnetic material extraction from ore or other materials.

Prof. Dr. Jiangang Ku
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 100 words) can be sent to the Editorial Office for announcement on this website.

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. Separations 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

  • magnetic separation
  • magnetic separator
  • magnetic flocculation
  • separation modeling
  • high gradient
  • quartz purification
  • Kaolin purification
  • non-metallic ore purification
  • lithium iron mica utilization
  • red mud utilization

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

Published Papers (2 papers)

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Research

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18 pages, 10033 KiB  
Article
Enhancing Recovery of Ultra-Fine Magnetite from Low-Iron-Grade Cyanidation Tailings by Optimizing Flow Field Parameters of Low-Intensity Magnetic Separation (LIMS)
by Yingjie Chen, Yaxiong Jiang, Yongjun Xian and Luzheng Chen
Separations 2024, 11(4), 120; https://doi.org/10.3390/separations11040120 - 16 Apr 2024
Viewed by 1446
Abstract
The characteristics of iron minerals in cyanidation tailings with a low iron grade were determined via chemical composition analysis, iron phase analysis, and mineral liberation analysis (MLA). The results showed that the cyanidation tailings contained 15.68% iron, mainly occurring in the form of [...] Read more.
The characteristics of iron minerals in cyanidation tailings with a low iron grade were determined via chemical composition analysis, iron phase analysis, and mineral liberation analysis (MLA). The results showed that the cyanidation tailings contained 15.68% iron, mainly occurring in the form of magnetite (19.66%) and limonite (79.91%), in which 16.52% magnetite and 65.90% limonite particles were fully liberated. Most ultra-fine magnetite grains were adjacent and wrapped with limonite to form complex intergrowths, which resulted in low-efficiency magnetite recovery in low-intensity magnetic separation (LIMS) and adversely affected the downstream high-gradient magnetic separation (HGMS) process. Thus, in this work, the optimization of the flow field was proposed to enhance the separation of ultra-fine magnetite from the cyanidation tailings using pilot-scale LIMS separation, and the controllable parameters (including feed flow, separation gap, drum rotating speed, and solid weight) affecting ultra-fine magnetite capture were investigated. Under optimized conditions, a high-grade magnetite concentrate assaying 63.31% Fe with 86.46% magnetite recovery was produced, which, respectively, increased by 0.76% and 15.22%, compared with those obtained from industrial production. In addition, from the flow dynamics simulation, it was found that the magnetite particles in the −6 µm ultra-fine fraction were lost much more easily than those of coarser fractions due to the relatively enhanced hydrodynamic drag force acting on the particles compared with the magnetic force. However, this loss would be effectively reduced with the regulation and control of the flow field. The iron recoveries in the −16~+6 µm and −6 µm fractions of magnetite concentrate increased by 3.66% and 4.42%, respectively, under optimized hydrodynamic conditions. This research outcome provides a valuable reference for the economic and effective utilization of iron resources from such solid wastes. Full article
(This article belongs to the Special Issue Application of Magnetic Separation Technology in Green Production)
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Review

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16 pages, 9438 KiB  
Review
Application of Magnetic Separation Technology in Resource Utilization and Environmental Treatment
by Jiangang Ku, Kunpeng Wang, Qian Wang and Zhongyun Lei
Separations 2024, 11(5), 130; https://doi.org/10.3390/separations11050130 - 24 Apr 2024
Cited by 1 | Viewed by 3733
Abstract
Magnetic separation technology is a physical separation method that uses the differences in magnetism between matter to separate them from each other by different motion behaviors in a non-uniform magnetic field. It is highly efficient, green, and environmentally friendly, with little change in [...] Read more.
Magnetic separation technology is a physical separation method that uses the differences in magnetism between matter to separate them from each other by different motion behaviors in a non-uniform magnetic field. It is highly efficient, green, and environmentally friendly, with little change in the physical and chemical properties of raw materials. Magnetic separation technology is commonly used in the field of mineral processing engineering for magnetite, hematite, titanite, and other magnetic ferrous metal oxide minerals. This paper summarizes the application of magnetic separation technology for resource utilization and environmental treatment in different fields, such as non-metal decomposition, valuable metal recovery, use of magnetic carrier chemical separation, biomedical targeted magnetic separation, and use of magnetic species separation in water and wastewater treatment. We seek to review the application and potential of magnetic separation technology in various fields, emphasize their key role, and explore possible directions for their future development. Full article
(This article belongs to the Special Issue Application of Magnetic Separation Technology in Green Production)
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