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Metals
Special Issues
New Technologies for Metals Recovery from Industrial Wastes
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New Technologies for Metals Recovery from Industrial Wastes

A special issue of Metals (ISSN 2075-4701). This special issue belongs to the section "Extractive Metallurgy".

Deadline for manuscript submissions: closed (30 June 2022) | Viewed by 6321

Special Issue Editor

Prof. Leszek Blacha

E-Mail Website1 Website2 Website3
Guest Editor
Institute of Metals Technology, Silesian University of Technology, Gliwice, Poland
Interests: recovery of metals from industrial waste; investigation of the reduction of metal slag using an alternative coal; wastes from the coal-enrichment process as alternative fuels for pyrometallurgical processes; vacuum refining of metals; kinetic analysis of metal evaporation process from molten alloys; factors determining the rate of the process of metal bath components evaporation experimental analysis of the melting process in cold crucible furnaces and vacuum induction furnace

Special Issue Information

Dear Colleagues,

The increasing demand for metals observed in recent years has resulted in the significant extraction of metal ores and, thus, the depletion of these resources. Additionally, the mining and metallurgical industries have generated large amounts of solid wastes that may be potential sources of valuable metals. End-of-life consumer products can also be another significant raw material for metal recovery. The current technologies and processes for obtaining metals from primary raw materials are, in most cases, not suitable for the recovery of metals from waste materials. Therefore, efforts are needed to develop the process foundations of new technologies. In this Special Issue, we aim to present works on new methods of recovering metals from industrial wastes, using pyrometallurgical, hydrometallurgical, biohydrometallurgical methods, and combined methods.

Prof. Leszek Blacha
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. Metals 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 2600 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

  • industrial waste
  • metals
  • pyrometallurgical methods
  • hydrometallurgical methods
  • biohydrometallurgical methods
  • alternative fuels

Published Papers (2 papers)

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Research

15 pages, 30034 KiB  
Article
The Distribution Behavior of Elements during the Top-Blowing Smelting Process of Electronic Waste
by Xiaochun Wen, Jinliang Wang and Houqing Wang
Metals 2021, 11(10), 1615; https://doi.org/10.3390/met11101615 - 11 Oct 2021
Cited by 1 | Viewed by 3599
Abstract
In this work, the local equilibrium modeling method of a non-equilibrium multi-phase reaction system in the top-blowing melting process of electronic waste was studied. The automatic judgment mechanism of phase transformation and the improvement of the trace component solving algorithm were explored to [...] Read more.
In this work, the local equilibrium modeling method of a non-equilibrium multi-phase reaction system in the top-blowing melting process of electronic waste was studied. The automatic judgment mechanism of phase transformation and the improvement of the trace component solving algorithm were explored to build the mathematical model of the element migration and transformation. Secondly, to determine the distribution mechanism of various elements in top-blowing smelting of electronic waste, the thermodynamic digital simulation system was developed according to the software platform of metallurgical process calculation. On this basis, combined with the industrial production practice, the coupling simulation experiment was carried out to investigate the influence of oxygen:feed ratio, oxygen concentration, amount of additive iron powder and CaO:SiO2 ratio of the slag on the smelting process. In addition, the direct yields of metals in the slag were Cu 90.69 wt%, Au 98.57 wt%, Ag 94.84 wt%, and Pd 97.87 wt% under the optimum conditions. Finally, the simulated values were consistent with industrial data, which can provide theoretical guidance for the industrial production practice of the top-blowing smelting of electronic waste. Full article
(This article belongs to the Special Issue New Technologies for Metals Recovery from Industrial Wastes)
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14 pages, 2149 KiB  
Article
Research on the Mathematical Model of Local Equilibrium in the Top-Blown Smelting Process of Electronic Waste
by Xiaochun Wen, Jinliang Wang and Houqing Wang
Metals 2021, 11(10), 1500; https://doi.org/10.3390/met11101500 - 22 Sep 2021
Cited by 3 | Viewed by 2279
Abstract
In the present study, the local equilibrium modeling and division method of the multiphase non-equilibrium for the top-blowing smelting process of electronic waste was investigated based on the local equilibrium hypothesis. And the mathematical description of the multi-phase equilibrium of each local area [...] Read more.
In the present study, the local equilibrium modeling and division method of the multiphase non-equilibrium for the top-blowing smelting process of electronic waste was investigated based on the local equilibrium hypothesis. And the mathematical description of the multi-phase equilibrium of each local area and the correlation method between the local areas were studied by analysis of relationships among the valence state, phase, composition, and Gibbs free energy of each element. Afterward, the reaction characteristic data such as melting material, product phase, composition, temperature, atmosphere, etc. were obtained via industrial measurement experiments. Based on these, a mathematical model of local equilibrium for the top-blowing smelting process of electronic waste was established. Finally, the thermodynamic digital simulation system was developed via the calculation of metallurgical process and online control platform MetCal Desk (v7.00, MetCal, Ganzhou, China), which can investigate the element distribution behavior during the smelting process and provide theoretical guidance for the industrial production practice. Full article
(This article belongs to the Special Issue New Technologies for Metals Recovery from Industrial Wastes)
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