Gravity, Magnetic and Electrostatic Forces for Mineral Separation

A special issue of Minerals (ISSN 2075-163X). This special issue belongs to the section "Mineral Processing and Extractive Metallurgy".

Deadline for manuscript submissions: closed (6 August 2021) | Viewed by 4037

Special Issue Editors


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Guest Editor
Department of Earth Science and Engineering, Imperial College London, London SW7 2AZ, UK
Interests: froth flotation; electrostatic separation; dry mineral processing; space resources
Special Issues, Collections and Topics in MDPI journals

E-Mail Website
Guest Editor
Department of Earth Science and Engineering, Imperial College London, London SW7 2AZ, UK
Interests: froth flotation; electrostatic separation; dry mineral processing; space resources

Special Issue Information

Dear Colleagues,

Mineral processing is at an exciting transition as we seek to address the huge energy and water costs of separating minerals to improve the sustainability of resource extraction. Mineral separation technologies that do not use water, in particular, are gaining attention. These technologies are often based on gravity, magnetic and electrostatic forces. New developments in mineral separation exploiting these forces have the potential to enhance, optimise and/or transform the environmental impact of mineral processing.

This Special Issue will cover the latest developments in gravity, magnetic and electrostatic techniques for mineral separation, including primary mineral extraction and recycling. Research addressing dry processing challenges is particularly welcome. Gravity separation includes both low gravity (e.g., space applications) and enhanced gravity. Separation exploiting magnetic forces includes low and high intensity, wet and dry applications. Electrostatic forces for mineral separation include charging by corona discharge, conductive induction and tribocharging. Papers that demonstrate new understanding and modelling of these complex systems are particularly welcome, as are those that show new developments in equipment design and plant design or new applications of existing technology. Papers from academia and industry are invited.

Dr. Kathryn Hadler
Prof. Dr. Jan Cilliers
Guest Editors

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. Minerals 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 2400 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

  • Gravity separation
  • Enhanced gravity
  • Magnetic separation
  • Dry magnetic separation
  • Electrostatic separation
  • Dry processing
  • Recycling

Published Papers (1 paper)

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Research

17 pages, 6443 KiB  
Article
Concentration and Recovery of Valuable Heavy Minerals from Dredged Fine Aggregate Waste
by Fausto Moscoso-Pinto and Hyung-Seok Kim
Minerals 2021, 11(1), 49; https://doi.org/10.3390/min11010049 - 05 Jan 2021
Cited by 8 | Viewed by 3572
Abstract
Inside the finest fractions of aggregates, usually wasted by ready mix concrete companies, valuable heavy minerals content is substantial. The concentration and recovery of valuable heavy minerals contained in dredged fine aggregates waste, located in Pyeongtaek South Korea, were investigated to develop a [...] Read more.
Inside the finest fractions of aggregates, usually wasted by ready mix concrete companies, valuable heavy minerals content is substantial. The concentration and recovery of valuable heavy minerals contained in dredged fine aggregates waste, located in Pyeongtaek South Korea, were investigated to develop a process that can recover and concentrate most of each heavy mineral. The raw material contains ilmenite, magnetite, monazite, and zircon. A gravity separation, recirculating the middlings recovered ilmenite, magnetite, monazite, and zircon with 44.05%, 36.90%, 53.76%, and 69.7% respectively. Nevertheless, a magnetic separation followed by gravity separation of the non-magnetic fraction further improved the recovery of ilmenite, magnetite, monazite, and zircon to 86.96%, 85.09%, 91.06%, and 90.82% respectively. This concentrate was separated at different magnetic intensities. Magnetite was concentrated at 0.05 T, resulting in a recovery of 23.4% and grade of 95.1 wt%. Ilmenite was at 0.4 T, with a recovery of 55.2% and grade of 84.2 wt%. Monazite was at 0.9 T, with a recovery of 59.3% and rare earth oxide content of 45.2%, the non-magnetic fraction has a high zircon content, the recovery was 70.6% and grade of 91.8 wt%. Full article
(This article belongs to the Special Issue Gravity, Magnetic and Electrostatic Forces for Mineral Separation)
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