Opportunities and Challenges in Mining and Mineral Processes

A special issue of Processes (ISSN 2227-9717). This special issue belongs to the section "Energy Systems".

Deadline for manuscript submissions: closed (20 June 2023) | Viewed by 2226

Special Issue Editors

Faculty of Engineering and Applied Science, Memorial University of Newfoundland, St John's, NL A1B 3X5, Canada
Interests: mineral processing; extractive metallurgy; materials chemistry
Faculty of Land Resources Engineering, Kunming University of Science and Technology, Kunming 650093, China
Interests: mineral processing; froth flotation; flotation chemistry; flotation reagent design
Special Issues, Collections and Topics in MDPI journals
State Key Laboratory of Complex Nonferrous Metal Resources Clean Utilization, Faculty of Land Resource Engineering, Kunming University of Science and Technology, Kunming 650093, China
Interests: mineral separation; flotation reagents; surface analysis; mineral surface chemistry; comprehensive utilization of mineral resources
Special Issues, Collections and Topics in MDPI journals
School of Resources, Environment and Safety Engineering, University of South China, Hengyang 421001, China
Interests: mineral processing; mineral materials; processing and metallurgy of uranium ore
Faculty of Land Resources Engineering, Kunming University of Science and Technology, Kunming 650093, China
Interests: magnetic separation theory and equipment; magnetic separation process simulation
Special Issues, Collections and Topics in MDPI journals

Special Issue Information

Dear Colleagues,

With the depletion of high-quality mineral resources, mining and mineral processing engineers are facing numerous technological challenges, while simultaneously being presented with opportunities for innovation. New technological developments in areas such as sustainable mining processes, mining equipment, mine management, digital technologies in mining, explosion technology, rock mechanics, mineral processing equipment and processes, mineral flotation, magnetic separation, gravity separation, extractive metallurgy, bioleaching, process optimization and control, process mineralogy, refractory ores processing, secondary metal resources processing, and tailing processing will generate new sustainable approaches for metals and minerals exploitation and supply.

This Special Issue on “Opportunities and Challenges in Mining and Mineral Processes” seeks high-quality works focusing on the latest novel advances in mining and mineral processing technologies. Topics include, but are not limited to:

  • Sustainable mining equipment and processes;
  • Mineral processing equipment and processes;
  • Novel extractive metallurgy processes;
  • Sustainable processes for refractory ores, secondary metal resources and tailing processing;
  • Process mineralogy;
  • Process optimization and digital control.

Dr. Yahui Zhang
Dr. Liuyang Dong
Dr. Guang Han
Dr. Zhiwu Lei
Dr. Zixing Xue
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. Processes 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

  • sustainable mining equipment and processes
  • mineral processing equipment and processes
  • extractive metallurgy
  • process optimization and control
  • process mineralogy
  • secondary metal resources
  • refractory ores
  • tailing processing

Published Papers (2 papers)

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Research

12 pages, 6052 KiB  
Article
Leaching Kinetics of Y and Eu from Waste Phosphors under Microwave Irradiation
by Delong Yang, Mingming Yu, Yunqi Zhao, Mingyu Cheng and Guangjun Mei
Processes 2023, 11(7), 1939; https://doi.org/10.3390/pr11071939 - 27 Jun 2023
Cited by 2 | Viewed by 638
Abstract
Waste fluorescent powder contains a large amount of rare earth elements, which have a high value for recovery and utilization. In order to achieve the rapid and efficient leaching of rare earth elements in these waste phosphors, microwave-assisted leaching of rare earth elements [...] Read more.
Waste fluorescent powder contains a large amount of rare earth elements, which have a high value for recovery and utilization. In order to achieve the rapid and efficient leaching of rare earth elements in these waste phosphors, microwave-assisted leaching of rare earth elements Y and Eu from the waste phosphor with hydrochloric acid was studied. The maximum leaching rates of Y (99.84%) and Eu (89.82%) were obtained at 600 W microwave power, 60 min microwave radiation time at 60 °C. The leaching kinetics showed that the microwave leaching process of Y and Eu conforms to the chemical reaction control model, and the apparent activation energy is 25.30 kJ/mol and 24.78 kJ/mol. Compared with the conventional heating method, the microwave leaching process can obviously reduce the reaction activation energy, shorten the reaction time, and achieve the rapid and efficient leaching of rare earth elements in the waste phosphors. Full article
(This article belongs to the Special Issue Opportunities and Challenges in Mining and Mineral Processes)
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15 pages, 4320 KiB  
Article
Density Functional Theory Study on the Adsorption of Fe(OH)2+ on Kaolinite Surface in Water Environment
by Hongqiang Wu, Yuqi Miao, Yong Li, Huashan Yan, Jinbiao Tan, Sen Qiu, Hao Wu and Tingsheng Qiu
Processes 2023, 11(1), 38; https://doi.org/10.3390/pr11010038 - 24 Dec 2022
Viewed by 1144
Abstract
Fe impurity is abundant in rare earth leaching solutions. The optimal hydrate structure of Fe(OH)2+ was calculated based on the quantum chemical in the water environment to investigate the microscopic occurrence of Fe impurity on kaolinite surfaces. The adsorption structure and bonding [...] Read more.
Fe impurity is abundant in rare earth leaching solutions. The optimal hydrate structure of Fe(OH)2+ was calculated based on the quantum chemical in the water environment to investigate the microscopic occurrence of Fe impurity on kaolinite surfaces. The adsorption structure and bonding mechanism (including outer and inner layer) of hydrate Fe(OH)2+ on the kaolinite (001) surface were investigated. According to the results, the stable hydrate form of Fe(OH)2+ is [Fe(OH)(H2O)5]2+. Hydrated Fe(OH)2+ has a tendency to adhere to the Si-O surface in the form of outer layer adsorption. Adsorbate tends to adsorb to the Ou (deprotonated upright hydroxyl) site, where it generates a monodentate adsorption compound, and to the Ol and Ou (deprotonated lying and upright hydroxyl) sites, where it generates a bidentate adsorption compound if inner layer adsorption occurs. The Mulliken population and density of state analysis demonstrate that the ionic properties of Fe-Os in the inner layer adsorption compound are reduced and Fe-Os bonds are filled with strong bonding and weak antibonding orbitals. More chemical bonds are formed in the bidentate adsorption compound, and the bidentate adsorption has lower adsorption energy. Therefore, in the process of inner layer adsorption, bidentate adsorption is more likely to occur. Full article
(This article belongs to the Special Issue Opportunities and Challenges in Mining and Mineral Processes)
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