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Minerals
Special Issues
Molecule Structural Design of Non-Ferrous Ore Flotation Collectors
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Molecule Structural Design of Non-Ferrous Ore Flotation Collectors

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 (1 December 2021) | Viewed by 3990

Special Issue Editors

Dr. Binbin Luo

E-Mail Website
Guest Editor
Department of Chemical and Materials Engineering, University of Alberta, Edmonton, AB T6G 1H9, Canada
Interests: froth flotation of oxide minerals; flotation reagent molecular design; phyllosilicate surface physiochemistry
Prof. Dr. Shujuan Dai

E-Mail Website
Guest Editor
School of Mining Engineering, University of Science & Technology of Liaoning, Shenyang 114051, China
Interests: magnesite beneficiation; non-ferrous metal flotation; flotation and hydrometallurgy of gold ore; resource microbiology technology
Prof. Dr. Yimin Zhu

E-Mail Website
Guest Editor
College of Resources and Civil Engineering, Northeastern University, Shenyang 110819, China
Interests: iron ores; froth flotation; flotation reagent; depressant; collecting mechanism
Dr. Chen Zhao

E-Mail Website
Guest Editor
BGRIMM Technology Group, Beijing 100160, China
Interests: mineral crystal chemistry; calcium-containing minerals; flotation separation; tungsten ore separation; mineralogical characteristics
Dr. Hongbiao Tao

E-Mail Website
Guest Editor
Department of Chemical and Materials Engineering, University of Alberta, Edmonton, AB T6G 1H9, Canada
Interests: minerals processing; first-principles simulation; tailings management
Dr. Zhihang Li

E-Mail Website
Guest Editor
School of Earth Science and Resources, Chang’an University, Xi’an 710054, China
Interests: froth flotation; inter-particles behaviors; serpentine mineral; AFM measurements; nano-scale force
Special Issues, Collections and Topics in MDPI journals

Special Issue Information

Dear Colleagues,

We were approached by the open-access journal Minerals to serve as Guest Editor and Co-Editors for the Special Issue “Molecule Structural Design of Non-Ferrous Ore Flotation Collectors”. We invite contributions to this Special Issue on all the aspects of the molecule structural design and syntheses of flotation collectors, molecular dynamic simulations, quantum chemistry simulations, mineral/collector interaction mechanisms, etc.

Froth flotation is one of the most widely applied technologies for the economical use of non-ferrous resources. Flotation collectors are added to the pulp of the ores for successful minerals separation. However, some disadvantages, such as poor water solubility under comparatively lower temperature, low separating performance, and poor biodegradation in water, affect the applications of the traditional cationic and anionic collectors during the non-ferrous ores flotation process, thereby inspiring the exploration and molecule structural design of novel-type series collectors, which are supposed to have better solubility, better dispersion, better collecting ability, easy degeneration, and lower floating temperature in non-ferrous ores froth flotation. Additionally, the adsorption mechanisms of the novel collectors using the advanced molecule simulation methods (DFT, MD, etc.) and instruments (AFM, QCM-D, SFG, etc.) are especially welcome.

Dr. Binbin Luo
Prof. Dr. Shujuan Dai
Prof. Dr. Yimin Zhu
Dr. Chen Zhao
Dr. Hongbiao Tao
Dr. Zhihang Li
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
  • flotation collectors
  • non-ferrous ores
  • molecule structural design
  • lower flotation temperature
  • biological degradation
  • high separation ability
  • molecular simulation
  • inter-particles interactions
  • AFM force measurements

Published Papers (2 papers)

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Research

18 pages, 1664 KiB  
Article
New Facile One-Pot Synthesis of Isobutyl Thiocarbamate in Recycling Solvent Mixture
by Goran Milentijević, Aleksandar D. Marinković, Milica Rančić, Aleksandra Bogdanović, Nevena Prlainović, Smiljana Marković and Milutin Milosavljević
Minerals 2021, 11(12), 1346; https://doi.org/10.3390/min11121346 - 30 Nov 2021
Cited by 1 | Viewed by 1867
Abstract
The specific objectives of the presented study were related to the optimization of the production process of N-alkyl-, N,N-dialkyl-, and N-cycloalkyl-O-isobutyl thiocarbamate; trial industrial production of N-ethyl-O-isobutyl thiocarbamate; and the evaluation of flotation [...] Read more.
The specific objectives of the presented study were related to the optimization of the production process of N-alkyl-, N,N-dialkyl-, and N-cycloalkyl-O-isobutyl thiocarbamate; trial industrial production of N-ethyl-O-isobutyl thiocarbamate; and the evaluation of flotation efficiency of N-ethyl-O-isobutyl thiocarbamate using a real ore sample. The optimization of thiocarbamate syntheses were performed by varying the molar ratio of isobutyl alcohol, carbon disulfide, potassium hydroxide, reaction time, and reaction temperature. In the first step, one-pot reaction took place to produce alkyl xanthate and was followed with chlorination to give alkyl chloroformate (O-alkyl carbonochloridothioate); finally, thiocarbamates were obtained by the reaction with corresponding amines. N-alkyl-O-ethyl thiocarbamate was synthesized as a comparative flotation agent. The structure of the synthesized compounds was confirmed by IR, 1H and 13C NMR, and MS instrumental methods, and the purity was determined by gas chromatographic method and elemental analysis. The optimized methods gave high-purity products in a significant yield that was also confirmed by semi-industrial production of N-ethyl-O-isobutyl thiocarbamate. The optimized thiocarbamate synthesis, without isolation of intermediates, is of great importance from the aspect of green technologies. Flotation efficiency test results, using real copper and zinc ores, showed the highest activity of N-ethyl-O-isobutyl thiocarbamate. The optimal one-pot thiocarbamate synthesis provides a simple procedure with a high conversion degree, and, thus, offers valuable technology applicable at the industrial scale. Full article
(This article belongs to the Special Issue Molecule Structural Design of Non-Ferrous Ore Flotation Collectors)
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13 pages, 1690 KiB  
Article
Synergistic Effect of DBP with CTAB on Flotation Separation of Quartz from Collophane
by Zhongxian Wu, Dongping Tao, Patrick Zhang, Xiaojun Jiang and Man Jiang
Minerals 2021, 11(11), 1196; https://doi.org/10.3390/min11111196 - 28 Oct 2021
Cited by 5 | Viewed by 1607
Abstract
Collophane is difficult to upgrade by reverse flotation of quartz with amine collector alone due to its low grade, complex structure, fine dissemination grain size, etc. This investigation was conducted to explore the synergistic effect of dibutyl phthalate (DBP) as a surfactant with [...] Read more.
Collophane is difficult to upgrade by reverse flotation of quartz with amine collector alone due to its low grade, complex structure, fine dissemination grain size, etc. This investigation was conducted to explore the synergistic effect of dibutyl phthalate (DBP) as a surfactant with cetyltrimethyl ammonium bromide (CTAB) as the collector on the separation of quartz from collophane by means of micro-flotation tests, surface tension and aggregate size measurements, and froth water mass fraction/recovery characterization. It was found that DBP reduced the surface tension of the reagent solution and enhanced the collision probability between bubbles and quartz particles by increasing the size of aggregates through increased hydrophobic interaction between the quartz particles and DBP droplets. The addition of DBP reduced the entrainment of fine collophane particles as a result of improved defoaming and increased the flotation recovery of quartz without resulting in any flotation of collophane at dosages lower than 200 mg/L. Flotation test results with the binary artificial mineral mixture showed that DBP improved the P2O5 recovery, SiO2 rejection, and P2O5 grade by up to 7%, 12%, and 1%, respectively. Full article
(This article belongs to the Special Issue Molecule Structural Design of Non-Ferrous Ore Flotation Collectors)
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