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Minerals
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Comprehensive Utilization of Metallurgical Slag
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Comprehensive Utilization of Metallurgical Slag

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 (20 April 2024) | Viewed by 7763

Special Issue Editors

Prof. Dr. Yan Liu

E-Mail Website
Guest Editor
Key Laboratory of Ecological Metallurgy of Multi-Metal Intergrown Ores of Ministry of Education, Northeastern University, Shenyang 110819, China
Interests: recovery and utilization of secondary resources; physical and numerical simulation of reactor; mineral processing
Dr. Xiaolong Li

E-Mail Website
Guest Editor
School of Metallurgy, Northeastern University, Shenyang 110819, China
Interests: utilization of metallurgical slag; CFD; scale-up of reactors

Special Issue Information

Dear Colleagues,

Metallurgical slag contains many valuable metals and is a potential resource. The efficient extraction of metal resources from metallurgical slag and the safe disposal of tailings have long been research priorities. New methods and engineering processes for recovering key metals from metallurgical slags such as steel slag, magnesium slag, copper slag, red mud, zinc slag, and vanadium slag have emerged as a result of the development of technology, extensive research, and the pursuit of environmental friendliness. This issue encourages the author to utilize advanced pyrometallurgy, hydrometallurgy, and electrometallurgy techniques to recover metals from metallurgical slag or produce high-value products. Furthermore, the application of external field strengthening methods, microstructures, and advanced mineral characterization are of interest.

Prof. Dr. Yan Liu
Dr. Xiaolong 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

  • metallurgy slag
  • hazardous solid waste
  • efficient separation and extraction
  • recycling and secondary recovery
  • harmless treatment
  • physical and numerical simulation
  • mineral evolution
  • electrometallurgy
  • hydrometallurgy
  • pyrometallurgy

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Published Papers (3 papers)

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Research

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13 pages, 5735 KiB  
Article
Conversion of Activated Calcium in Industrial Water to Micron CaCO3 Powder Based on CO2 Absorption and Mineralization
by Xiao-Long Li, Yan Liu and Ting-An Zhang
Minerals 2023, 13(7), 979; https://doi.org/10.3390/min13070979 - 23 Jul 2023
Cited by 1 | Viewed by 1978
Abstract
Carbon dioxide capture, utilization, and storage (CCUS) is one of the essential approaches to achieving permanent CO2 emission reduction. A new idea of absorbing and mineralizing CO2 with industrial wastewater and converting activated calcium into micron CaCO3 powder is proposed [...] Read more.
Carbon dioxide capture, utilization, and storage (CCUS) is one of the essential approaches to achieving permanent CO2 emission reduction. A new idea of absorbing and mineralizing CO2 with industrial wastewater and converting activated calcium into micron CaCO3 powder is proposed in this paper, which synchronizes water softening and CO2 fixation. Therefore, this paper investigated the characteristics of circulating water quality in the iron and steel industry and the transformation behaviors of CO2 capture by activated calcium to CaCO3 powder in the mild aqueous environment under different process parameters. The phase composition, morphology, and particle size distribution (PSD) of CaCO3 powder were characterized by X-ray diffraction (XRD), scanning electron microscope (SEM), and (laser particle size analyzer) LPSA, respectively. In addition, a green integrated cycle system for industrial water capture of mineralized CO2 was preliminarily constructed, which provides a reference method for carbon reduction and economic utilization of carbon sources in an industrial system. Full article
(This article belongs to the Special Issue Comprehensive Utilization of Metallurgical Slag)
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16 pages, 2328 KiB  
Article
Lead Release from Simulated Lead-Containing Jarosite Using Freeze–Thaw Cycling with EDTA
by Jun Peng, Yujun Shen, Hui Liu, Luhua He, Yangjin Wei and Xu Yan
Minerals 2023, 13(6), 769; https://doi.org/10.3390/min13060769 - 3 Jun 2023
Viewed by 1185
Abstract
Lead is the primary toxic element found in jarosite residue; it is necessary to synthesize simulated lead-containing jarosite residue (SLJS) to investigate its lead release behavior and predict the slag’s stability and potential for secondary environmental pollution. This study explores the ion release [...] Read more.
Lead is the primary toxic element found in jarosite residue; it is necessary to synthesize simulated lead-containing jarosite residue (SLJS) to investigate its lead release behavior and predict the slag’s stability and potential for secondary environmental pollution. This study explores the ion release behavior, leaching toxicity, and stability of SLJS during freeze–thaw cycles with EDTA (E-FTC). Experimental results demonstrate that the release of lead, iron, and sulfate from SLJS under E-FTC is contingent upon multiple factors, including solution pH, EDTA concentration, freeze–thaw cycles, freezing temperature, and freeze–thaw mode. Specifically, employing an EDTA concentration of 200 mM, a pH of 6, a freezing temperature of −20 °C, and 12 freeze–thaw cycles, the lead release reaches 15.1 mM, accounting for 94.9% of the total lead content, while iron is negligibly released, thus enabling effective separation of lead from iron. Subsequent to E-FTC, the exchangeable lead content exhibits a substantial reduction, accompanied by a marked increase in residual lead, resulting in a remarkable 98% reduction in leaching toxicity. Moreover, the equilibrium concentration of lead in the continuous stable leaching solution is 0.13 mg/L, significantly below the lead toxicity threshold (5 mg/L). Therefore, environmental stability can be greatly enhanced. This study presents a novel approach for the safe disposal of jarosite residue under mild conditions and at low temperatures, contributing to the broader field of environmentally sustainable waste management. Full article
(This article belongs to the Special Issue Comprehensive Utilization of Metallurgical Slag)
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Review

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31 pages, 4676 KiB  
Review
Summary of Research Progress on Metallurgical Utilization Technology of Red Mud
by Xiao-Fei Li, Ting-An Zhang, Guo-Zhi Lv, Kun Wang and Song Wang
Minerals 2023, 13(6), 737; https://doi.org/10.3390/min13060737 - 29 May 2023
Cited by 16 | Viewed by 3969
Abstract
Red mud is a highly alkaline solid waste discharged in the alumina production process. Because of its large amount of discharge and high alkalinity, it is mostly stored in dams, occupying a large number of land resources and posing a great safety hazard [...] Read more.
Red mud is a highly alkaline solid waste discharged in the alumina production process. Because of its large amount of discharge and high alkalinity, it is mostly stored in dams, occupying a large number of land resources and posing a great safety hazard to the ecological environment. The large-scale consumption of red mud is a global technical problem. Different alumina production processes will produce different types of red mud, mainly Bayer process red mud. In addition to its overall utilization in the field of building materials, agriculture, the environment, and the chemical industry, red mud also contains valuable metal elements, such as titanium, iron, scandium, and aluminum, and is an important secondary mineral resource. This paper focuses on the principle and characteristics of red mud metallurgical treatment for the extraction of valuable components and looks forward to the prospect of large-scale, harmless, and high-value comprehensive utilization technology for red mud in China. Full article
(This article belongs to the Special Issue Comprehensive Utilization of Metallurgical Slag)
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