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Minerals
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Selected Papers from “The 3rd International Conference of Young Scholars...
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Selected Papers from “The 3rd International Conference of Young Scholars in Mineral Processing”

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 (15 November 2019) | Viewed by 9349

Special Issue Editors

Prof. Dr. Zhiyong Gao

E-Mail Website1 Website2
Guest Editor
School of Minerals Processing and Bioengineering, Central South University, Changsha 410083, China
Interests: flotation of oxide minerals; mineral crystal chemistry; flotation reagent molecular design; mineral/reagent/water interfacial science; waste treatment in minerals processing
Special Issues, Collections and Topics in MDPI journals
Prof. Dr. Przemyslaw B. Kowalczuk

E-Mail Website
Guest Editor
Department of Geoscience and Petroleum, Norwegian University of Science and Technology, S.P. Andersens veg 15a, 7031 Trondheim, Norway
Interests: mineral processing; minerals engineering; flotation; physicochemistry of surfaces; colloids systems; hydrophobicity; minerals; surface properties; extractive metallurgy; leaching
Special Issues, Collections and Topics in MDPI journals

Special Issue Information

Dear Colleagues,

The global mineral processing community faces significant challenges, ranging from technological to environmental and economic issues. These challenges are not new: Experts in the field of mineral processing have been confronting and solving such challenges over the centuries, thereby delivering important contributions to the clean and efficient use of our mineral resources. The 3rd International Conference of Young Scholars in Mineral Processing, chaired by associate professor Zhiyong Gao from Central South University, will be held on 26–28 April 2019, in Mianyang, China. We invite professionals from the mineral processing industry, researchers from institutions, as well as academic scholars to attend this conference and share the latest research progress in a wide range of topics concerning mineral processing in China and beyond. This Special Issue aims to select and publish high-quality research papers, short communications, and review articles presented in the conference. We are cordially inviting you to join us at the conference and also to submit your manuscript to this Special Issue.

Dr. Zhiyong Gao
Dr. Przemyslaw B. Kowalczuk
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

  • Technological mineralogy
  • Comminution and classification
  • Physical enrichment—gravity, magnetic, and electrostatic separation
  • Surface chemistry, flotation fundamentals, flotation reagents, flotation technology
  • Processing of fines and slimes
  • Hydro- and bio-hydrometallurgy
  • Environmental problems and recycling of mineral-containing waste products
  • Process modeling

Published Papers (3 papers)

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Research

15 pages, 3587 KiB  
Article
High-Efficiency Catalysis of Peroxymonosulfate by MgO for the Degradation of Organic Pollutants
by Qian Peng, Xuekun Tang, Kun Liu, Xianping Luo, Dongsheng He, Ying Dai and Ganghong Huang
Minerals 2020, 10(1), 2; https://doi.org/10.3390/min10010002 - 18 Dec 2019
Cited by 32 | Viewed by 4647
Abstract
In the study, magnesium oxide (MgO) was used to catalyze peroxymonosulfate (PMS) for the degradation of organic pollutants for the first time. According to the single-factor experiment results, it was determined that MgO could efficiently catalyze PMS to degrade organic matters in a [...] Read more.
In the study, magnesium oxide (MgO) was used to catalyze peroxymonosulfate (PMS) for the degradation of organic pollutants for the first time. According to the single-factor experiment results, it was determined that MgO could efficiently catalyze PMS to degrade organic matters in a wide range of pH values. Based on radical quenching experiments and electron spinning resonance spectra, singlet oxygen was identified to be the crucial reactive species. Importantly, the oxygen vacancy on the surface of MgO was determined as the key active site, which accelerated the decomposition of PMS to produce singlet oxygen. This study provides an interesting insight into the novel and ignored catalyst of MgO for the highly efficient activation of PMS, which will greatly benefit the Fenton-like catalytic degradation of organic wastewater. Full article
(This article belongs to the Special Issue Selected Papers from “The 3rd International Conference of Young Scholars in Mineral Processing”)
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11 pages, 2833 KiB  
Article
A Novel Method for Improving Low-Temperature Flotation Performance of Nonpolar Oil in the Molybdenite Flotation
by He Wan, Juanping Qu, Hui Li, Tingshu He, Xianzhong Bu and Wei Yang
Minerals 2019, 9(10), 609; https://doi.org/10.3390/min9100609 - 04 Oct 2019
Cited by 7 | Viewed by 1970
Abstract
Nonpolar hydrocarbon oil (NHO) is one of the most extensively used collectors in the flotation of molybdenite due to its excellent selectivity. However, NHO has low sensibility at pulp temperature. At low temperatures (<283 K), although more kerosene is used, the recovery of [...] Read more.
Nonpolar hydrocarbon oil (NHO) is one of the most extensively used collectors in the flotation of molybdenite due to its excellent selectivity. However, NHO has low sensibility at pulp temperature. At low temperatures (<283 K), although more kerosene is used, the recovery of molybdenite flotation is still lower than at room temperature. In this study, magnetizing treatment, which is an efficient, low-cost, innovative, and environmentally friendly emulsification method, was used to improve the flotation performance of NHO in low-temperature molybdenite flotation. The test results showed that, compared with unmagnetized kerosene (UMK), the optimum dosage of magnetized kerosene (MK) could be reduced by 11% at 298 K. At the same dosage of kerosene, the flotation recovery of MK was 3% higher than UMK at 278 K. The surface tension measurement results showed that the surface tension of MK rose periodically as the magnetic field intensity increased, and there was a maximum surface tension within each period. Further, the magnetic field intensity had the maximum flotation recovery of molybdenite at the maximum surface tension of MK. Combined with the analysis based on the Girifalco–Good theory and the static drop volume method of interfacial tension, the interfacial tension of kerosene–water was shown to decrease with the increase of the surface tension of kerosene. This finding indicates that the dispersibility of kerosene in pulp could be improved by reducing the size of oil droplets, thereby improving the molybdenite flotation recovery of kerosene at low-temperature pulp. It is helpful to improve the flotation recovery of molybdenite using NHO as a collector for low-temperature pulp (<283 K). Full article
(This article belongs to the Special Issue Selected Papers from “The 3rd International Conference of Young Scholars in Mineral Processing”)
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16 pages, 4569 KiB  
Article
A Comparison of Mineralogical and Thermal Storage Characteristics for Two Types of Stone Coal
by Chuanchang Li, Huan Ma, Baoshan Xie, Bo Zhang, Xinbo Zhao, Mengfan Wang, Zhangxing He, Wei Li and Jian Chen
Minerals 2019, 9(10), 594; https://doi.org/10.3390/min9100594 - 29 Sep 2019
Cited by 6 | Viewed by 2177
Abstract
Understanding the mineralogical and chemical characteristics of stone coal is imperative for exploring the thermal storage characteristics of stone coal. Two types stone coal (SCwt and SChc) were sampled from the pond of a stone coal mine in Henan province [...] Read more.
Understanding the mineralogical and chemical characteristics of stone coal is imperative for exploring the thermal storage characteristics of stone coal. Two types stone coal (SCwt and SChc) were sampled from the pond of a stone coal mine in Henan province (China), and the chemical composition, phase composition, and thermal behavior of the stone coal were investigated. Furthermore, the petrography of the stone coal was studied in detail. The mineral phases of the stone coal were quartz, kaolinite, roscoelite, and goethite, as distinguished by reflected light microscopy and further proven by scanning electron microscope-energy dispersive spectrometer (SEM-EDS). The thermal conductivity of SCwt was 0.19 W m−1 K−1, while that of SChc was 0.24 W m−1 K−1. Stearic acid (SA) was blended with SCwt and SChc to prepare SA/SCwt and SA/SChc composites via an impregnation method, respectively. The thermogravimetric (TG) curves show that the loading capacity of SChc, at 17.40%, is higher than that of SCwt (16.63%). The thermal energy storage capacities of SA/SCwt and SA/SChc composites were 29.21 J g−1 and 33.02 J g−1 according to a differential scanning calorimetry (DSC) analysis. Therefore, SChc is a potential candidate for thermal storage applications due to more obvious thermal storage characteristics, including higher thermal conductivity and loading capacity. Full article
(This article belongs to the Special Issue Selected Papers from “The 3rd International Conference of Young Scholars in Mineral Processing”)
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