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Minerals
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Development of Flotation of Chalcopyrite
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Development of Flotation of Chalcopyrite

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 (31 October 2024) | Viewed by 3617

Special Issue Editor

Dr. Leopoldo Gutierrez

E-Mail Website
Guest Editor
1. Department of Metallurgical Engineering, Universidad de Concepcion, Concepción 4070371, Chile
2. Principal Researcher of the Water Research Center for Agriculture and Mining CRHIAM (ANID/FONDAP/15130015), Victoria 1295, Barrio Universitario, Concepción, Chile
Interests: surface chemistry; froth flotation; rheology of mineral suspensions; geometallurgy; clay minerals in flotation; seawater in mineral processing; sensors development
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Special Issue Information

Dear Colleagues,

Chalcopyrite is an important sulfide mineral in the process of flotation because it is the primary source of copper in many ore deposits. Flotation is the most widely used method for concentrating chalcopyrite. Flotation of chalcopyrite includes complex phenomena that utilize different chemicals (collectors, frothers and modifiers) and conditions to separate the mineral from gangue minerals such as silicates and pyrite.

The flotation of chalcopyrite from porphyry and non-porphyry ores is influenced by a variety of factors that can impact the efficiency of the separation process. Some of the key factors affecting chalcopyrite flotation from porphyry ores include mineralogy (grain size, associations, liberation, gangue, phyllosilicates, etc.), particle size, physicochemical conditions (pH, reagents, and Eh), water quality, equipment and process design, etc. Understanding and optimizing these factors are essential for achieving efficient chalcopyrite flotation and maximizing the recovery of valuable copper minerals while minimizing the loss of valuable minerals and the generation of waste. Continuous research and process improvements aim to address these factors and enhance the sustainability and effectiveness of chalcopyrite flotation processes.

We sincerely invite you to contribute to this Special Issue, entitled “Development of Flotation of Chalcopyrite”. Papers from academia and industry are welcome.

Dr. Leopoldo Gutierrez
Guest Editor

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

  • chalcopyrite
  • flotation
  • copper sulfides
  • water quality
  • clays
  • seawater

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Published Papers (2 papers)

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Research

35 pages, 7861 KiB  
Article
Statistical Evaluation of Flotation Behavior of Chalcopyrite in the Presence of SIPX and Acetoacetic Acid n-Octyl Ester as a Novel Collector Blend: A Sustainable Approach
by Imkong Rathi and Shravan Kumar
Minerals 2024, 14(10), 1003; https://doi.org/10.3390/min14101003 - 2 Oct 2024
Viewed by 1071
Abstract
The chalcopyrite deposit in Malanjkhand, India, is the largest copper ore producer in the country. However, its flotation performance has room for improvement. This study used standard flotation experiments using a mechanical flotation cell using a conventional collecting reagent and a collector blend [...] Read more.
The chalcopyrite deposit in Malanjkhand, India, is the largest copper ore producer in the country. However, its flotation performance has room for improvement. This study used standard flotation experiments using a mechanical flotation cell using a conventional collecting reagent and a collector blend consisting of xanthate and ester. A three-factor, three-level Box-Behnken design was used to statistically evaluate the experimental design. The obtained data were analyzed using an ANOVA, cubic plots, and response surface methods. The goal was to evaluate the effects and interactions of three key process parameters in chalcopyrite flotation: the dosages of sodium silicate (depressant), sodium isopropyl xanthate (collector), and acetoacetic acid n-Octyl ester (co-collector/modifier). The results implied that introducing acetoacetic acid n-Octyl ester along with minor tweaks in the dosages of sodium isopropyl xanthate helped increase copper grades by at least 15%, with good recovery percentiles. Among the three parameters tested, the copper’s grade and recovery were considerably positively influenced by the AoE dosage in the collector blend. Employing 0.006 kg/t sodium silicate and 0.0065 kg/t sodium isopropyl xanthate with 0.005 kg/t of acetoacetic acid n-Octyl ester, an optimum copper recovery of 88.87% could be achieved. However, with a sodium silicate dosage of 0.0048 kg/t, a SIPX dosage of 0.008 kg/t, and an AoE dosage of 0.005 kg/t, optimized copper grade (1.55%) could be achieved, which is a 78.1% increase from the feed sample grade. To validate the expected results, verification experiments were carried out, and the experimental findings were found to be on at par with the statistical model predictions. Furthermore, the calculated SPI value of 0.0000147cap Kg−1 for a global index per resident lies between 0 and 1. Full article
(This article belongs to the Special Issue Development of Flotation of Chalcopyrite)
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11 pages, 1534 KiB  
Article
The Effect of an Anionic Polyacrylamide on the Flotation of Chalcopyrite, Enargite, and Bornite
by Ginna Jimenez, Pablo Cabrera, Angie Rodriguez, Camilo Cuervo and Leopoldo Gutierrez
Minerals 2024, 14(7), 634; https://doi.org/10.3390/min14070634 - 21 Jun 2024
Cited by 1 | Viewed by 1730
Abstract
Water recycling in mining is essential to decrease water usage, which results in the accumulation of high concentrations of inorganic and organic substances in the process water. Consequently, adverse impacts on the flotation process of copper sulfides may arise. High-molecular-weight polymers based on [...] Read more.
Water recycling in mining is essential to decrease water usage, which results in the accumulation of high concentrations of inorganic and organic substances in the process water. Consequently, adverse impacts on the flotation process of copper sulfides may arise. High-molecular-weight polymers based on anionic polyacrylamides (PAMs) are used as tailing flocculants in mineral processing plants. The recirculation of water recovered from the tailing thickeners to the flotation process introduces residual PAMs, which can impact the flotation of important copper sulfides like chalcopyrite, bornite, and enargite. This issue has been rarely studied. In this work, results on the effect of an anionic polyacrylamide (PAM) of medium–low anionicity on the flotation of chalcopyrite, enargite, and bornite are reported and analyzed. The results show that PAM molecules depress the flotation of chalcopyrite, enargite, and bornite under a wide range of pH values. The experimental data indicate that the depressing effect of PAMs on copper sulfides increases with pH. The zeta potential results reveal that this parameter becomes less negative with the addition of PAMs, indicating interactions between PAM molecules and the surfaces of the copper sulfides. PAM adsorption on copper sulfides increases with pH, which correlates with the flotation and zeta potential data. It is proposed that the interactions between PAM molecules and copper sulfides are explained by the presence of surface iron and copper hydroxides that create chemically active adsorption sites. Full article
(This article belongs to the Special Issue Development of Flotation of Chalcopyrite)
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