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Minerals
Special Issues
Coal Processing and Utilization
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Coal Processing and Utilization

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

Deadline for manuscript submissions: 15 March 2025 | Viewed by 1268

Special Issue Editors

Dr. Yinfei Liao

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Guest Editor
Chinese National Engineering Research Center of Coal Preparation and Purification, China University of Mining and Technology, Xuzhou 221116, China
Interests: froth flotaion; coal–collector interaction; bubble–particle interaction
Special Issues, Collections and Topics in MDPI journals
Dr. Gen Huang

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Guest Editor
School of Chemistry and Environmental Engineering, China University of Mining and Technology, Beijing 100083, China
Interests: coal separation and utilization; mineral processing; flotation; flow field simulation
Prof. Dr. Jun Chen

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Guest Editor
Department of Materials Science and Engineering, Anhui University of Science and Technology, Huainan 232001, China
Interests: coal slurry water; lattice defects in coal measures clays; quantum chemistry/molecular dynamics simulations
Special Issues, Collections and Topics in MDPI journals
Dr. Gan Cheng

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Guest Editor
Institute of Resources and Environmental Engineering, Shanxi University, Taiyuan 030031, China
Interests: mineral processing; coal preparation; flotation; collector; desulfuration
Special Issues, Collections and Topics in MDPI journals

Special Issue Information

Dear Colleagues,

Coal has played a fundamental role as an energy and coke source for centuries. In recent years, it has shown great potential in coal chemistry industry and carbon-based materials. The utilization of coal nowadays requires both in-depth research and extensive exploration, balanced with environmental concerns. An equally essential step before its utilization is the processing of coal. The heterogeneous composition of the complex organic structures and associated minerals of coal makes efficient separation a challenge, theoretically and technically. Various efforts in raw coal separation and beneficiation have been made, including, but not limited to, coal and coal-based material properties’ characterization, size classification, dense separation, and colloid interface interactions; however, fundamental mechanisms and technologies have not been fully discovered or understood. Further intensification methods and theory development of the coal separation process are mostly favourable for the quality and efficient production of clean coal, as well as its following utilization. 

Dr. Yinfei Liao
Dr. Gen Huang
Prof. Dr. Jun Chen
Dr. Gan Cheng
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

  • coal separation
  • coal-based material
  • mineral engineering
  • coal chemistry
  • coal combustion
  • environmental sciences ecology
  • separation
  • device mechanics
  • mechanism

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Published Papers (1 paper)

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Research

17 pages, 14653 KiB  
Article
New Insights on the Understanding of Sulfur-Containing Coal Flotation Desulfurization
by Gan Cheng, Yulong Li, Yijun Cao, Xin Wang, Enze Li, Yanxia Guo and Ee Von Lau
Minerals 2024, 14(10), 981; https://doi.org/10.3390/min14100981 - 29 Sep 2024
Viewed by 560
Abstract
The clean and efficient utilization of coal is a promising way to achieve carbon neutrality. Coking coal is a scarce resource and an important raw material in the steel industry. However, the presence of pyrite sulfur affects its clean utilization. Nonetheless, this pyrite [...] Read more.
The clean and efficient utilization of coal is a promising way to achieve carbon neutrality. Coking coal is a scarce resource and an important raw material in the steel industry. However, the presence of pyrite sulfur affects its clean utilization. Nonetheless, this pyrite could be removed using depressants during flotation. Commonly used organic depressants (sodium lignosulfonate (SL), calcium lignosulfonate (CL), and pyrogallol (PY)) and inorganic depressants (calcium oxide (CaO) and calcium hypochlorite (Ca(ClO)2)) were chosen in this study. Their inhibition mechanism was discussed using FTIR, XPS, and molecular dynamics (MD) methods. The desulfurization ability of organic depressants was shown to be better than inorganic ones. Among the organic depressants, PY proved to be advantageous in terms of low dosage. Physical adsorption was identified as the main interaction form of SL, CL, and PY onto the surface of pyrite, as evidenced from FTIR and XPS analyses. Similarly, MD simulation results showed that hydrogen bonds played a proactive role in the interactions between PY and pyrite. The diffusion coefficient of water molecules on the pyrite surface was also observed to decrease when organic depressants were present, indicating an increase in the hydrophilicity of pyrite. This research is of great significance to utilize sulfur-containing coal and minerals. Full article
(This article belongs to the Special Issue Coal Processing and Utilization)
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