Search for Articles:
Title / Keyword
Author / Affiliation / Email
Journal
Article Type
 
 
Advanced Search
 
Section
Special Issue
Volume
Issue
Number
Page
 
4.1
2.2
Journals
Minerals
Special Issues
Reagents and Surface Interaction Mechanisms in Mineral Flotation
share announcement

Reagents and Surface Interaction Mechanisms in Mineral Flotation

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 2022) | Viewed by 4259

Special Issue Editors

Prof. Dr. Guangyi Liu

E-Mail Website
Guest Editor
College of Chemistry and Chemical Engineering, Central South University, Changsha 410083, China
Interests: flotation reagent; flotation fundamentals; interface and surface science; green chemical engineering
Prof. Dr. Lei Xie

E-Mail Website
Guest Editor
School of Minerals Processing and Bioengineering, Central South University, Changsha 410083, China
Interests: colloid and interface science; intermolecular and surface forces; mineral processing; water treatment; polymer adhesion
Dr. Sheng Liu

E-Mail Website
Guest Editor
College of Chemistry and Chemical Engineering, Central South University, Changsha 410083, China
Interests: intermolecular and surface forces; functional surfactant design and synthesis; colloid and interface science; mineral flotation

Special Issue Information

Dear Colleagues,

Froth flotation is a dominant technique for enriching and recovering valuable minerals from complex ores comprising numerous different minerals. During the flotation process, chemical reagents (e.g., collectors, inhibitors, activators) are added to selectively alter the surface wettability of mineral particles, and bubbles then selectively attach onto hydrophobic minerals, thereby realizing the selective flotation separation of valuable minerals. Therefore, a comprehensive understanding of the surface interaction mechanisms, including of mineral–reagent, mineral–mineral, and mineral–bubble, is of both fundamental and practical importance for promoting the innovation of flotation principles and industrial processes. To date, a variety of analytical and theoretical approaches, such as involving density functional calculation (DFT) theory, contact angle and zeta potential characterization, X-ray photoelectron spectroscopy (XPS), Fourier-transform infrared spectroscopy (FTIR), time-of-flight secondary ion mass spectrometry (ToF-SIMS), atomic force microscopy (AFM), rheometry, et al., have been employed to characterize the surface interaction mechanisms involving mineral particles, flotation reagents, and bubbles in froth flotation. Such characterization methods will undoubtedly and greatly promote the understanding of surface interaction mechanisms and the design of new flotation reagents.

The purpose of this Special Issue is to explore the surface interaction mechanisms operating during mineral flotation, especially at the molecular and micro/nano-scale level. Of course, submissions describing other types of studies involving flotation mechanisms are also welcome. The Guest Editors expect that this Special Issue will contribute to providing an up-to-date understanding of surface interactions and innovations in the development of novel flotation reagents.

Prof. Dr. Guangyi Liu
Prof. Dr. Lei Xie
Dr. Sheng Liu
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

  • froth flotation
  • mineral–mineral interaction
  • mineral–bubble interaction
  • mineral–reagent interaction
  • flotation reagent
  • surface interaction mechanisms

Benefits of Publishing in a Special Issue

  • Ease of navigation: Grouping papers by topic helps scholars navigate broad scope journals more efficiently.
  • Greater discoverability: Special Issues support the reach and impact of scientific research. Articles in Special Issues are more discoverable and cited more frequently.
  • Expansion of research network: Special Issues facilitate connections among authors, fostering scientific collaborations.
  • External promotion: Articles in Special Issues are often promoted through the journal's social media, increasing their visibility.
  • e-Book format: Special Issues with more than 10 articles can be published as dedicated e-books, ensuring wide and rapid dissemination.

Further information on MDPI's Special Issue polices can be found here.

Published Papers (2 papers)

Download All Papers
Order results
Result details
Show export options expand_more Show export options expand_less
Select all
Export citation of selected articles as:

Research

12 pages, 3072 KiB  
Communication
Behavior and Mechanism of a Novel Hydrophobic Collector in the Flotation of Bastnaesite
by Xiang Yao, Xinyang Yu, Yuhui Zeng, Linghan Mao, Honghui Xie, Shanming Liu, Guichun He, Zhiqiang Huang, Haolin Wang and Zhilin Liu
Minerals 2022, 12(7), 817; https://doi.org/10.3390/min12070817 - 26 Jun 2022
Cited by 5 | Viewed by 1689
Abstract
In order to improve the recovery of rare earth elements, finding a collector with a strong selectivity ability had become the focus of research. In this paper, phenylpropyl hydroxamic acid (PHA) was used as a new hydrophobic surfactant collector for the separation of [...] Read more.
In order to improve the recovery of rare earth elements, finding a collector with a strong selectivity ability had become the focus of research. In this paper, phenylpropyl hydroxamic acid (PHA) was used as a new hydrophobic surfactant collector for the separation of bastnaesite from calcite, and salicylic hydroxamic acid (SHA) was used as a reference collector. The results of a single mineral flotation test with SHA show that the reagent has good collection performance and selectivity. In addition, Zeta potential measurements and FTIR analysis show that PHA is adsorbed on the surface of bastnaesite by chemical adsorption, and the surface state of bastnaesite changes after PHA treatment. By XPS analysis, PHA interacts with Ce, and forms a Ce–O bond with Ce. It is speculated that the hydroxamic acid forms a five-element-chelated hydroxamic group with Ce on bastnaesite surface, so as to improve the hydrophobicity of bastnaesite, and make bastnaesite float more easily out of the pulp. According to DFT calculation, PHA has better adsorption capacity and stronger hydrophobicity than SHA, and shows superior electronic group capacity and chemical reactions that promote its flotation performance. Full article
(This article belongs to the Special Issue Reagents and Surface Interaction Mechanisms in Mineral Flotation)
►▼ Show Figures

Graphical abstract

13 pages, 5131 KiB  
Article
Effects of Al(III) Ions at Magnetite Flotation from Quartz by Dodecylamine Al(III)
by Dong Wang, Min Tang, Yan Wu and Xiaoying Niu
Minerals 2022, 12(5), 613; https://doi.org/10.3390/min12050613 - 12 May 2022
Cited by 1 | Viewed by 2009
Abstract
The flotation separation of magnetite and quartz is a long-term challenge for the beneficiation industry. For high-quartz magnetite, conventional flotation shows poor separation effect, resulting in the waste of resources and low flotation efficiency. In this paper, dodecylamine acts as a collector and [...] Read more.
The flotation separation of magnetite and quartz is a long-term challenge for the beneficiation industry. For high-quartz magnetite, conventional flotation shows poor separation effect, resulting in the waste of resources and low flotation efficiency. In this paper, dodecylamine acts as a collector and Al(III) ions in water act as a depressant to selectively separate magnetite and quartz at high alkalinity. The experimental results are analyzed by a micro-flotation experiment, solution chemical calculation, zeta potential, contact angle measurement, and Fourier transform infrared spectroscopy (FTIR). The results of micro-flotation experiments showed that Al(III) ions in water inhibited magnetite more strongly than quartz. The calculation results of solution stoichiometry and zeta potential showed that the phase formed by Al(III) ions on the surface of magnetite and quartz are mainly Al(OH)3(s), which covers the surface of magnetite and quartz, The contact angle measurement results showed that with the addition of Al(III) ions, the contact angle of magnetite varies significantly than that of quartz, and the floatability of magnetite is lower than that of quartz. The FT-IR results further indicated that the addition of Al(III) ions could hinder the adsorption of dodecylamine on the magnetite surface. Meanwhile, the addition of Al(III) ions has no obvious effect on the adsorption of dodecylamine on the quartz surface. Full article
(This article belongs to the Special Issue Reagents and Surface Interaction Mechanisms in Mineral Flotation)
►▼ Show Figures

Figure 1

Show export options expand_more Show export options expand_less
Select all
Export citation of selected articles as:
 
Displaying articles 1-2
Back to TopTop