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Minerals
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Advances in Particle Morphological Analysis and Current Characterization Applications in...
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Advances in Particle Morphological Analysis and Current Characterization Applications in Mineral Processing

A special issue of Minerals (ISSN 2075-163X). This special issue belongs to the section "Mineral Processing and Extractive Metallurgy".

Deadline for manuscript submissions: 31 May 2024 | Viewed by 3662

Special Issue Editors

Prof. Dr. Ugur Ulusoy

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Guest Editor
Department of Chemical Engineering, Sivas Cumhuriyet University, TR 58140 Sivas, Turkey
Interests: mineral processing; particle characterization
Dr. Onur Guven

E-Mail Website
Guest Editor
Department of Mining Engineering, Faculty of Engineering, Adana Alparslan Türkeş Science and Technology University, Sarıçam, Adana 01250, Turkey
Interests: mineral processing; surface chemistry; morphological analysis; theoretical calculations
Special Issues, Collections and Topics in MDPI journals
Dr. Xiangning Bu

E-Mail Website
Guest Editor
Key Laboratory of Coal Processing and Efficient Utilization (Ministry of Education), China University of Mining and Technology, Xuzhou 221116, China
Interests: flotation kinetics; nanobubble; ultrasound cavitation; flotation kinetics; emulsified oily collectors; recycling of spent LIBs
Special Issues, Collections and Topics in MDPI journals

Special Issue Information

Dear Colleagues,

There is an increasing need for minerals and metals, which are essential to the advancement and sustainability of societies due to two main reasons: a demand for industries such as paper, paint, glass, cement, plastics, medicines, ceramics, cosmetics, and fine chemicals because of the growing global population and shifting consumer habits, and also a demand for the manufacturing of electric vehicles, batteries, wind turbines, and solar panels to reach the target of decarbonization.

Since ores must be physically or chemically processed before being converted into usable metals or finished mineral products, particle properties such as size and shape are critical for liberating and separating valuable minerals from their gangues, improving their separation efficiency, and employing them in the modeling and simulation of comminution unit operations. Since comminuted particles have non-spherical particles, they behave differently from the homogeneous spherical particles that are traditionally used as models. Therefore, not only their size and distribution but also their shape become crucial in mineral processing applications. Characterizing particle shapes helps to determine the connection between process efficiency and product quality and offers opportunities to increase production efficiency. In addition, new, cutting-edge technological tools are being used every day to shed light on the mysteries surrounding how the shape characteristics of the particles affect their behavior during the process.

Thus, this Special Issue welcomes the shape characterization of particles in mineral processing operations (screening and classification, ore sorting, gravity separation, magnetic separation, electrostatic separation, leaching, and flotation) by using new techniques and approaches.

Prof. Dr. Ugur Ulusoy
Dr. Onur Guven
Dr. Xiangning Bu
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
  • critical raw materials
  • grinding
  • beneficiation
  • image analysis
  • shape characterization
  • shape morphology
  • morphology
  • screening
  • classification
  • ore sorting
  • gravity separation
  • magnetic separation
  • electrostatic separation
  • leaching
  • flotation

Published Papers (3 papers)

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Research

24 pages, 6244 KiB  
Article
Statistical Characteristics of Geometry, Density and Porosity of Individual Ore Particles: A Case Study
by Weiran Zuo, Yuqing Lu, Jingwei Xu, Weichao Liu and Keqiang Chen
Minerals 2023, 13(10), 1298; https://doi.org/10.3390/min13101298 - 07 Oct 2023
Viewed by 812
Abstract
This study aims to develop a methodology to describe and predict the statistical characteristics of individual ore particles in terms of length, width, height, volume, mass, area, circularity, aspect ratio, density, and porosity. The mean value, standard deviation, and appropriate distribution function were [...] Read more.
This study aims to develop a methodology to describe and predict the statistical characteristics of individual ore particles in terms of length, width, height, volume, mass, area, circularity, aspect ratio, density, and porosity. The mean value, standard deviation, and appropriate distribution function were calculated or identified for each data set of a given particle property in a given size fraction. It was found that the mean value and the standard deviation of the same particle property can either be predicted from particle size or be approximated by a constant. The best-fit distribution of each kind of particle property was identified by the Anderson–Darling test using Minitab software. Generally, the data sets with the same particle property but different size fractions and ore types follow the same distribution. A methodology was developed to predict the distribution of individual particle properties in a given size fraction by particle size, and the fitting quality is good in most cases. The statistical characteristics of individual ore particles can improve the precise processing of ore feed in concentrators, the preparation of feed samples for lab-scale testing, the calibration of image analysis of ore particle size distribution, etc. Full article
(This article belongs to the Special Issue Advances in Particle Morphological Analysis and Current Characterization Applications in Mineral Processing)
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10 pages, 2186 KiB  
Article
The Effects of Ball-Mill Grinding Parameters on Lignite Morphology
by Onur Guven, Arman Ehsani and Burçin Kaymakoğlu
Minerals 2023, 13(9), 1185; https://doi.org/10.3390/min13091185 - 09 Sep 2023
Viewed by 715
Abstract
In recent years, because of the decreasing liberation sizes of the minerals, processes such as grinding need to be evaluated in more detail. As is well known, size reduction processes are very important both in mineral processing and in many industrial applications. However, [...] Read more.
In recent years, because of the decreasing liberation sizes of the minerals, processes such as grinding need to be evaluated in more detail. As is well known, size reduction processes are very important both in mineral processing and in many industrial applications. However, to increase the efficiency of the processes after size reduction, variations in particle morphology should also be evaluated, along with particle size. Although the effectiveness of grinding media (ball, rod, autogenous) has been shown for different materials, there are very few studies on the effect of the powder/grinding media ratio and grinding time on particle morphology in terms of shape factor and roughness values. This study aims to investigate the variations in the morphology of lignite samples under different grinding conditions such as grinding time and powder/grinding media ratio (U). The results of these analyses showed that while the d80 size of the ground lignite was 1.1 mm after 2 min grinding time, it decreased to 0.5 mm following 15 min grinding time. The roundness values of particles vary in the range of 0.746–0.790 with increasing grinding time. In addition to the grinding time, while the roundness of particles was found to be 0.739 for 0.34 U values (powder/grinding medium rate), it increased to 0.788 when the U value was adjusted to 0.67. The average roughness (Ra) values of particles increased from 60.9 nm to 107.9 nm upon increasing the grinding time from 2 min to 16 min. Due to these findings, it can be suggested that lignite samples became rounder with increasing grinding times, and roughness analyses made in a 10 × 10 μm surface area with an Atomic Force Microscope (AFM) indicated that particle roughness increased in direct proportion to grinding time. Full article
(This article belongs to the Special Issue Advances in Particle Morphological Analysis and Current Characterization Applications in Mineral Processing)
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21 pages, 10353 KiB  
Article
The Role of Particle Size and Shape on the Recovery of Copper from Different Electrical and Electronic Equipment Waste
by Fırat Burat, Nazlım İlkyaz Dinç, Halide Nur Dursun and Ugur Ulusoy
Minerals 2023, 13(7), 847; https://doi.org/10.3390/min13070847 - 22 Jun 2023
Cited by 3 | Viewed by 1490
Abstract
The increasing world population and the development of technology have boosted the demand for electrical and electronic equipment (EEE). Equipment that has completed its life cycle causes serious damage to the environment due to its toxic components. In addition, it contains many more [...] Read more.
The increasing world population and the development of technology have boosted the demand for electrical and electronic equipment (EEE). Equipment that has completed its life cycle causes serious damage to the environment due to its toxic components. In addition, it contains many more base metals (copper, aluminum, nickel, lead, tin, etc.) and precious metals (silver, gold, palladium, platinum, etc.) compared with a run of mine ore. Recycling these values with an economic and environmental understanding will ensure sustainability and prevent the rapid depletion of natural resources. Specific gravity, magnetic, electrostatic, optical, surface, thermal, and other property differences between particles as well as the shape, size, and distribution of individual particles directly determine the success of the recycling process. By determining the behavior of the particles during enrichment and producing grains suitable for enrichment with better performance in the size reduction stage, the quality of the concentrate to be subjected to the final chemical/metallurgical treatment will be enhanced. The main aim of this study is to reveal the effect of particle size and shape properties on the recovery of valuable metals from two different waste electrical and electronic equipment (WEEE) sources, end-of-life printed circuit boards and waste electric wires, using environmentally friendly, easier-to-use, and cost-effective mechanical, physical, and physiochemical processes. Deciding on the most suitable enrichment process after detailed characterization of the products obtained from different comminution equipment and their particle size and shape directly affected the amount, content, and recovery of the final concentrate. Full article
(This article belongs to the Special Issue Advances in Particle Morphological Analysis and Current Characterization Applications in Mineral Processing)
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