Advances in Process Mineralogy

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 2026 | Viewed by 374

Special Issue Editors

School of Minerals Processing and Bioengineering, Central South University, Changsha 410083, China
Interests: flotation; mineralogy; mineral processing
Key Laboratory of Coal Processing & Efficient Utilization, Ministry of Education, School of Chemical Engineering and Technology, China University of Mining & Technology, Xuzhou 221116, China
Interests: mineral processing; trace element occurrence; hydrometallurgy; utilization of coal combustion waste
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Guest Editor
School of Minerals Processing and Bioengineering, Central South University, Changsha 410083, China
Interests: flotation; mineralogy; clay minerals; rheology
Special Issues, Collections and Topics in MDPI journals

Special Issue Information

Dear Colleagues, 

Process mineralogy, a specialized branch of mineralogy that focuses on processing mineral raw materials, originated in the mid-19th century. It provides the mineralogical foundation for beneficiation processes through a detailed analysis of mineral composition, structure, and behavior. Its research areas encompass the material composition of ores, mineral distribution characteristics, liberation properties, and beneficiation performance, among others. With the rise in modern large-scale industries, countries are consuming subsurface resources at an unprecedented rate. The rapid development of industrial production has led to the increasing utilization of low-grade, fine-grained, and mineralogically complex ores. At the same time, demands for recovery efficiency and resource utilization continue to grow. Consequently, mineral processing technology must advance accordingly to meet these societal needs. In recent years, due to the progress in beneficiation techniques, an expanded use of mineral resources, improved comprehensive utilization levels, and the application of new analytical technologies, process mineralogy has become a vital driver of technological progress in geological, mineral processing, and metallurgical operations. It plays an essential role in resource evaluation, process optimization, the utilization of refractory resources, and the advancement of sustainable and green mining practices.

This Special Issue invites contributions including original scientific research related to process mineralogy from both well-known and newly explored regions worldwide. Topics of interest include but are not limited to (1) innovative methods in mineral characterization, (2) changes in mineralogical attributes during beneficiation, such as microstructural and compositional analysis of ores and tailings, (3) process mineralogy of high-clay-content ores, and (4) other applications, such as process mineralogical studies of titanium-bearing mineral resources. The issue aims to highlight how process mineralogy contributes to a more efficient, economical, and sustainable use of mineral resources.

Dr. Hao Jiang
Dr. Jinhe Pan
Dr. Yanhong Wang
Guest Editors

Manuscript Submission Information

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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

  • process mineralogy
  • mineral processing
  • particle size distribution
  • composition and content
  • liberation degree

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Published Papers (1 paper)

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Research

15 pages, 3942 KB  
Article
Influence and Mechanism of 1-Dodecyl-3-methylimidazolium Bromide on the Flotation Behavior of Quartz and Feldspar in a Neutral System
by Siyu Chen, Yuan Chen, Guohua Gu, Xiang Yao and Huanxiao Hu
Minerals 2025, 15(12), 1235; https://doi.org/10.3390/min15121235 - 23 Nov 2025
Viewed by 170
Abstract
Quartz and feldspar have similar physical, chemical, and surface properties. Effectively separating them in near-neutral systems has long been a challenging research focus. This study introduces 1-Dodecyl-3-methylimidazolium bromide (DMB), an ionic liquid, as a collector in a quartz–feldspar flotation separation system to investigate [...] Read more.
Quartz and feldspar have similar physical, chemical, and surface properties. Effectively separating them in near-neutral systems has long been a challenging research focus. This study introduces 1-Dodecyl-3-methylimidazolium bromide (DMB), an ionic liquid, as a collector in a quartz–feldspar flotation separation system to investigate its effects on the flotation behavior of quartz and feldspar. The interaction between the collector and the minerals is explained through zeta potential measurements, infrared spectroscopy analysis, and DFT calculations. The flotation test results indicate that DMB exhibits selective flotation separation properties enabling the separation of quartz from feldspar. Across the pH range of 3 to 11, DMB demonstrates high collection capability for quartz, but lower capability for feldspar. In particular, at pH levels of 7 to 8, the recovery difference between the two minerals exceeds 80%, achieving optimal selective separation. Mechanistic studies indicate that DMB primarily adsorbs on quartz and feldspar through electrostatic adsorption. The adsorption energy between DMB and quartz reaches −340.59 kJ/mol, forming a stable adsorption layer on the quartz surface. However, electrostatic repulsion arises over a broad area due to the large volume and cationic nature of DMB’s polar group and the exposed cationic Al sites on the feldspar surface, thereby hindering the interaction between DMB and feldspar. This research establishes the foundation for achieving efficient selective flotation separation of quartz and feldspar in a neutral system. Full article
(This article belongs to the Special Issue Advances in Process Mineralogy)
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