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Crystals
Special Issues
Complex Ore Extraction and Utilization
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Complex Ore Extraction and Utilization

A special issue of Crystals (ISSN 2073-4352). This special issue belongs to the section "Mineralogical Crystallography and Biomineralization".

Deadline for manuscript submissions: closed (15 December 2022) | Viewed by 3076

Special Issue Editors

Prof. Dr. Yufeng Guo

E-Mail Website
Guest Editor
School of Minerals Processing and Bioengineering, Central South University, Changsha 410083, China
Interests: sintering and pelletizing; direct reduction and melting reduction; comprehensive utilization of complex ores
Special Issues, Collections and Topics in MDPI journals
Dr. Shuai Wang

E-Mail Website
Guest Editor
School of Minerals Processing and Bioengineering, Central South University, Changsha 410083, China
Interests: pelletizing and sintering; pyrometallurgy; phase equilibrium; comprehensive utilization of complex ores
Special Issues, Collections and Topics in MDPI journals
Prof. Dr. Feng Chen

E-Mail Website
Guest Editor
School of Minerals Processing and Bioengineering, Central South University, Changsha 410083, China
Interests: direction reduction of iron ore; recycling solid waste; sintering and pelletizing
Special Issues, Collections and Topics in MDPI journals
Dr. Lingzhi Yang

E-Mail Website
Guest Editor
School of Minerals Processing and Bioengineering, Central South University, Changsha 410083, China
Interests: simulation; theoretical model; steelmaking; comprehensive utilization of complex ores
Special Issues, Collections and Topics in MDPI journals
Prof. Dr. Yulei Sui

E-Mail Website
Guest Editor
School of Iron and Steel, Soochow University, Suzhou 215000, China
Interests: hydrometallurgy; pyrometallurgy; physical chemistry of metallurgy; extraction metallurgy
Dr. Hongyang Wang

E-Mail Website
Guest Editor
School of Materials Science and Engineering, Anhui University of Science and Technology, Huainan 232001, China
Interests: recycling solid waste; comprehensive utilization of complex ores; alumina extraction
Special Issues, Collections and Topics in MDPI journals

Special Issue Information

Dear Colleagues,

With the constant depletion of quality ore resources, the extraction and utilization of complex ore has attracted much research attention in recent decades. When treating complex ore with current methods, many issues, such as the difficulty of minerals enrichment, low utilization rate of ore resources and large output of tailing (or slag), arise due to complex phase components. The current research focuses on mineralogy, phase transformation, and the separation and extraction of valuable elements from complex ore and wastes by hydrometallurgical and pyrometallurgical methods. The present Special Issue on “Complex Ore Extraction and Utilization” can be seen as a status report summarizing the research progress achieved in the last five years. Submissions of papers should include review and research articles.

The potential topics include, but are not limited to:

  • The characterization of complex ore;
  • The crystallization of complex ore;
  • Grinding technologies;
  • Separation technologies;
  • New flotation reagents;
  • Thermodynamic properties;
  • Phase transformation;
  • Phase diagram and phase equilibrium;
  • The oxidization and reduction of complex ore;
  • The leaching of complex ore;
  • Challenges and innovations in the extraction and utilization of complex ore.

Prof. Dr. Yufeng Guo
Dr. Shuai Wang
Prof. Dr. Feng Chen
Dr. Lingzhi Yang
Prof. Dr. Yulei Sui
Dr. Hongyang Wang
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. Crystals 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

  • characterization of complex ore
  • crystallization of complex ore
  • grinding technologies
  • separation technologies
  • new flotation reagents
  • thermodynamic properties
  • phase transformation
  • phase diagram and phase equilibrium
  • oxidization and reduction of complex ore
  • leaching of complex ore
  • challenges and innovations in extraction and utilization of complex ore

Published Papers (2 papers)

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Research

13 pages, 5910 KiB  
Article
Merohedral Mechanism Twining Growth of Natural Cation-Ordered Tetragonal Grossular
by Taras L. Panikorovskii, Irina O. Galuskina, Vladimir N. Bocharov, Vladimir V. Shilovskikh and Evgeny V. Galuskin
Crystals 2022, 12(11), 1638; https://doi.org/10.3390/cryst12111638 - 14 Nov 2022
Cited by 1 | Viewed by 1396
Abstract
Garnet supergroup minerals are in the interest of different applications in geology, mineralogy, and petrology and as optical material for material science. The growth twins of natural tetragonal grossular from the Wiluy River, Yakutia, Russia, were investigated using single-crystal X-ray diffraction, optical studies, [...] Read more.
Garnet supergroup minerals are in the interest of different applications in geology, mineralogy, and petrology and as optical material for material science. The growth twins of natural tetragonal grossular from the Wiluy River, Yakutia, Russia, were investigated using single-crystal X-ray diffraction, optical studies, Raman spectroscopy, microprobe, and scanning electron microscopy. The studied grossular is pseudo-cubic (a = 11.9390 (4), c = 11.9469 (6) Å) and birefringent (0.01). Its structure was refined in the Ia3¯d, I41/acd, I41/a, and I4¯2d space groups. The I41/a space group was chosen as the most possible one due to the absence of violating reflections and ordering of Mg2+ and Fe3+ in two independent octahedral sites, which cause the symmetry breaking according to the group–subgroup relation Ia3¯d → I41/a. Octahedral crystals of (H4O4)4−-substituted grossular are merohedrally twinned by twofold axis along [110]. The mechanism of twining growth led to the generation of stacking faults on the (110) plane and results in the formation of crystals with a long prismatic habit. Full article
(This article belongs to the Special Issue Complex Ore Extraction and Utilization)
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13 pages, 2708 KiB  
Article
Fusion–Extraction Technique of Vanadium(III) Using Ammonium Phosphate Salt as Flux
by Trevor T. Chiweshe
Crystals 2022, 12(10), 1464; https://doi.org/10.3390/cryst12101464 - 17 Oct 2022
Cited by 1 | Viewed by 1129
Abstract
This study presents an alternative fusion method for sample dissolution and extraction of vanadium from an inorganic (V2O3) compound and mineral ore sample (AMIS 0501) using phosphate salts as flux. Complete sample dissolution was achieved at 800 °C within [...] Read more.
This study presents an alternative fusion method for sample dissolution and extraction of vanadium from an inorganic (V2O3) compound and mineral ore sample (AMIS 0501) using phosphate salts as flux. Complete sample dissolution was achieved at 800 °C within ±20 min using both the sodium and ammonium phosphate flux. The precipitation of vanadium was subsequently achieved after the fusion of the sample using ammonium phosphate flux, and no precipitate was obtained using sodium phosphate flux. The differences in cations between the two fluxes (NH4+ and Na+) influenced the precipitation of vanadium. The XRD analysis of the precipitate from V2O3 using ammonium phosphate showed a monoclinic structure of vanadium (III) tris(metaphosphate) (V(PO3)3) compound, which belonged to the Ic space group with lattice parameters a = 10.6071, b = 19.0871 and c = 9.4230. A remarkable vanadium recovery of 98% was obtained from inorganic compounds, V2O3, and up to 70% from the AMIS mineral ore sample using the ammonium phosphate flux method. The vanadium precipitates from AMIS contained Fe (20.97%) and Ti (44.97%), which occurred as impurities in the recovery of vanadium using the ammonium phosphate flux method. Full article
(This article belongs to the Special Issue Complex Ore Extraction and Utilization)
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