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Minerals
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Advances in Ore Characterization Methods for Comminution
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Advances in Ore Characterization Methods for Comminution

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 October 2021) | Viewed by 5131

Special Issue Editors

Dr. Mehdi Parian

E-Mail Website
Guest Editor
Minerals and Metallurgical Engineering, Department of Civil, Environmental and Natural Resources Engineering, Luleå University of Technology, SE-971 87 Luleå, Sweden
Interests: liberation; ore characterization; comminution; process mineralogy
Special Issues, Collections and Topics in MDPI journals
Prof. Dr. Pertti Lamberg

E-Mail Website
Guest Editor
AA Sakatti Mining Oy, Anglo American, 99600 Sodankylä, Finland
Interests: geometallurgy; sustainable processing; economic geology
Dr. Marcos de Paiva Bueno

E-Mail Website
Guest Editor
1. Geopyörä Oy, 90510 Oulu, Finland
2. Julius Kruttschnitt Mineral Research Centre, Sustainable Minerals Institute of the University of Queensland, 4068 Queensland, Australia
Interests: comminution; rock breakage characterization; geometallurgy; process modelling and optimization

Special Issue Information

Dear Colleagues,

Within an ore deposit, each major ore type with a significant variation in characteristics and grindability must undergo a lab and pilot study to obtain the suitable operating and design setup. Today, there is a trend towards using a smaller amount of sample, and faster and simpler procedures applicable to geometallurgical programs. These limitations lead to the development of innovative ideas concerning shortcut tests and  ore characteristics, such as mineralogy, texture, and lithology, related to the comminution behavior of ores. Contributions dealing with aspects of geometallurgy related to comminution—including small-scale comminution and ore characterizations methods to predict breakage behavior, grinding energy and comminution indices, and mineral liberation—are encouraged. In particular, studies dealing with drill core samples and the validation of proposed methods would be of great interest. 

Dr. Mehdi Parian
Prof. Dr. Pertti Lamberg
Dr. Marcos de Paiva Bueno
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

  • comminution
  • rock breakage
  • liberation
  • ore texture
  • ore hardness
  • grindability
  • ore characterization
  • grinding
  • crushing
  • grinding energy
  • proxy method
  • geometallurgy

Published Papers (2 papers)

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Research

16 pages, 4755 KiB  
Article
Determination of Abrasiveness in Copper-Gold Sulfide Ores: A Contribution to the Geometallurgical Model of the Sossego Deposit
by Petterson de Azevedo Barbosa, Maurício Guimarães Bergerman, Elisabeth da Fonseca and Rogerio Kwitko-Ribeiro
Minerals 2021, 11(12), 1427; https://0-doi-org.brum.beds.ac.uk/10.3390/min11121427 - 16 Dec 2021
Cited by 3 | Viewed by 2632
Abstract
The geological context of this study is established in the iron oxide-copper-gold (IOCG) deposit of Sossego (Canaã dos Carajás, Brazil), where hydrothermal alterations in shear zones concentrated the metals of interest and added new characteristics to the metavolcanic-sedimentary and granite rocks. The mineral [...] Read more.
The geological context of this study is established in the iron oxide-copper-gold (IOCG) deposit of Sossego (Canaã dos Carajás, Brazil), where hydrothermal alterations in shear zones concentrated the metals of interest and added new characteristics to the metavolcanic-sedimentary and granite rocks. The mineral transformation of rocks by hypersaline fluids enriched in metals and silica also modifies some metallurgical properties, such as abrasiveness. Special bench tests on rock drill cores are used in mapping the abrasiveness of rocks, with the Bond abrasion test being more commonly used in the mining industry, but it has a restrictive sampling protocol and mass requirement for geometallurgical studies. As a counterpoint, the test of the Laboratoire Central des Ponts et Chaussées/Central Laboratory of Bridges and Roads (LCPC) requires a smaller amount of fine material and a finer granulometric range. The study on the use of LCPC was implemented in 40 samples, using Bond Ai as a reference. The results showed a strong correlation between both methodologies (R2 = 95%), validating the use of LCPC to quantify abrasiveness in the Sossego mine. It was also possible to classify the most abrasive lithologies. Full article
(This article belongs to the Special Issue Advances in Ore Characterization Methods for Comminution)
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34 pages, 25962 KiB  
Article
Advances on the Fragmentation-Energy Fan Concept and the Swebrec Function in Modeling Drop Weight Testing
by Finn Ouchterlony, José A. Sanchidrián and Ömürden Genç
Minerals 2021, 11(11), 1262; https://0-doi-org.brum.beds.ac.uk/10.3390/min11111262 - 13 Nov 2021
Cited by 4 | Viewed by 1409
Abstract
The breakage index equation (BIE), or t10 model from drop weight testing (DWT) data for rocks and ores is used in the design of crushers and mills. Such models are becoming increasingly difficult to visualize as the number of variables increases. The [...] Read more.
The breakage index equation (BIE), or t10 model from drop weight testing (DWT) data for rocks and ores is used in the design of crushers and mills. Such models are becoming increasingly difficult to visualize as the number of variables increases. The so-called double fan BIE, combined with the Swebrec distribution’s accurate description of the sieving curves, is applied to the modelling of drop-weight test fragmentation. The key parameters are geometric properties visible in the fan plot; slopes of straight lines and their point of convergence. The ability of the double fan BIE to reproduce DWT data had been previously established for 8 rocks with 480 DWT data sets. Here the fidelity of the double fan BIE is further evaluated for 18 new materials, based on 281 data sets. The fidelity of the double fan BIE with three fan lines is on par with the fidelity of the current state-of-the-art models for the new materials. Besides the breakage index equation, the new double fan BIE’s t10 equation produces, without additional parameters or fitted constants, the general breakage surface equation tn for an arbitrary n value as a bonus. The specific sieving curve for any combination of particle size and impact energy is also contained in the same formula. The result is an accurate, compact and transparent model. Full article
(This article belongs to the Special Issue Advances in Ore Characterization Methods for Comminution)
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