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Advances in Reagents for Mineral Processing, 2nd Edition
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Advances in Reagents for Mineral Processing, 2nd Edition

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 (30 April 2025) | Viewed by 3171

Special Issue Editors

Prof. Dr. Wengang Liu

E-Mail Website
Guest Editor
School of Resources and Civil Engineering, Northeastern University, Shenyang 110819, China
Interests: flotation reagents; separation and purification of complex minerals; hydrometallurgical processing of minerals; comprehensive utilization of tailings
Special Issues, Collections and Topics in MDPI journals
Dr. Wenbao Liu

E-Mail Website
Guest Editor
School of Resources and Civil Engineering, Northeastern University, Shenyang 110819, China
Interests: efficient separation of mineral resources; research and development of flotation reagents; molecular dynamics simulation and numerical simulation of mineral processing; mineral surface chemistry; resource utilization of bulk solid wastes
Special Issues, Collections and Topics in MDPI journals
Dr. Liang Zhao

E-Mail Website
Guest Editor
School of Mining, Liaoning Technical University, Fuxin 123000, China
Interests: molecular design of flotation reagent; oxide mineral flotation; adsorption mechanism; modelling and simulation
Prof. Dr. Xingrong Zhang

E-Mail Website
Guest Editor
College of Chemical Engineering, Qingdao University of Science and Technology, Qingdao, China
Interests: sulfide ores; flotation reagents; mineral processing; separation; molecule design

Special Issue Information

Dear Colleagues，

Mineral processing is an applied technical subject for the separation of valuable minerals from gangue minerals. Reagents, especially those used for flotation, such as collectors and depressants are always employed to tune the wettability of mineral particle surfaces in this process. Mineral processors usually use collectors to cause a valuable mineral surface to become sufficiently hydrophobic, while depressants cause gangue minerals to become hydrophilic. In recent years, with leaner and more complex ores, there are great challenges to our long-held technological solutions, especially in flotation reagents. In this Special Issue, we aim to discuss the latest developments in reagents for mineral processing. We invite you to contribute to this Special Issue by submitting research articles or comprehensive reviews concerning flotation reagents, including their molecular design and synthesis, quantitative structure–activity relationship, the mineral flotation behavior, the interaction between flotation reagents and mineral surfaces, etc.

Prof. Dr. Wengang Liu
Dr. Wenbao Liu
Dr. Liang Zhao
Prof. Dr. Xingrong Zhang
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

  • mineral chemistry (surface reactivity, surface broken bonds, surface absorbability, etc.)
  • reagents (collectors, depressants, dispersants, etc.)
  • reagent chemistry (QSAR, molecular design, assembly, etc.)
  • mineral/reagent interaction (MD simulation, quantum chemistry simulation, XPS, etc.)
  • flotation kinetics
  • flotation bubbles

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Related Special Issue

Published Papers (2 papers)

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Research

18 pages, 6758 KiB  
Article
Understanding the Adsorption Mechanism of BTPA, DEPA, and DPPA in the Separation of Malachite from Calcite and Quartz: DFT and Experimental Studies
by Zehui Gao, Chongjun Liu, Tong Lu, Zhiqiang Zhao, Guiye Wu and Yangge Zhu
Minerals 2024, 14(7), 692; https://doi.org/10.3390/min14070692 - 2 Jul 2024
Cited by 1 | Viewed by 1124
Abstract
The relationship between the structure of bis (2,4,4-trimethylpentyl) phosphinic acid (BTPA), diethyl phosphinic acid (DEPA), and diphenyl phosphinic acid (DPPA) on the flotation performance of malachite was investigated. Through a series of flotation experiments, density functional theory (DFT) calculations, and surface analysis methods, [...] Read more.
The relationship between the structure of bis (2,4,4-trimethylpentyl) phosphinic acid (BTPA), diethyl phosphinic acid (DEPA), and diphenyl phosphinic acid (DPPA) on the flotation performance of malachite was investigated. Through a series of flotation experiments, density functional theory (DFT) calculations, and surface analysis methods, we aimed to deeply understand the microscopic mechanism of the interactions between these collectors and the malachite surface. The experimental results showed that BTPA exhibited excellent selectivity and flotation performance for malachite in the pH range of 5.0–11.0, significantly better than DEPA and DPPA. Surface analysis evidence from X-ray photoelectron spectroscopy (XPS) and Fourier transform infrared spectroscopy (FT-IR) further confirmed the chemical adsorption characteristics of BTPA on the malachite surface. DFT calculations revealed that the adsorption capacity of BTPA on the malachite surface exceeds that of DEPA and DPPA. Electron transfer analysis, especially through frontier molecular orbital theory, differential charge density, PDOS, and COHP analysis, indicated that the charge transfer process from the s orbitals of oxygen atoms in the collectors to the d orbitals of copper atoms on the mineral surface is the decisive factor for the adsorption strength. Full article
(This article belongs to the Special Issue Advances in Reagents for Mineral Processing, 2nd Edition)
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14 pages, 7269 KiB  
Article
Synthesis of S-Allyl-O, O′-Dibutyl Phosphorodithioate and Its Adsorption Mechanism on Chalcopyrite Surface
by Luhuai Kong, Miaoqing Wang, Rongfang Wang, Hui Wang, Dayong Sun and Xingrong Zhang
Minerals 2024, 14(6), 528; https://doi.org/10.3390/min14060528 - 21 May 2024
Viewed by 1388
Abstract
The demand for non-ferrous copper metals has increased dramatically with the development of the global economy; accordingly, some refractory copper sulfide ores with low grade and their associated minerals are beginning to be utilized, making the flotation separation of copper concentrates exceptionally difficult, [...] Read more.
The demand for non-ferrous copper metals has increased dramatically with the development of the global economy; accordingly, some refractory copper sulfide ores with low grade and their associated minerals are beginning to be utilized, making the flotation separation of copper concentrates exceptionally difficult, especially the separation of chalcopyrite and pyrite. In this paper, S-allyl-O, O′-dibutyl phosphorodithioate (ADTP) was synthesized by a one-pot method and used as a chalcopyrite collector in the flotation separation of chalcopyrite and pyrite. Flotation experiments results have shown that ADTP exhibits better selectivity and greater collecting power for chalcopyrite under neutral or weak base conditions. The 95% recovery of chalcopyrite can be achieved at pH 8.0 and 8.0 mg/L ADTP. From the analysis results of the contact angle, the SEM-EDS spectrogram, and elemental mapping, it was found that ADTP adsorbed uniformly on a chalcopyrite surface and made a significant contribution to the hydrophobicity of the surface. Confirmed by FTIR and XPS analysis, ADTP was able to form P–S–Cu bonds on a chalcopyrite surface, proving that it was adsorbed on the chalcopyrite surface in the form of chemisorption. Full article
(This article belongs to the Special Issue Advances in Reagents for Mineral Processing, 2nd Edition)
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