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Research Progress in Separation and Extraction of Ferrous and Non-ferrous...
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Research Progress in Separation and Extraction of Ferrous and Non-ferrous Metals

A special issue of Separations (ISSN 2297-8739). This special issue belongs to the section "Purification Technology".

Deadline for manuscript submissions: 10 September 2024 | Viewed by 3946

Special Issue Editors

Dr. Wei Zhang

E-Mail Website
Guest Editor
School of Materials and Metallurgy, Wuhan University of Science and Technology, Wuhan, China
Interests: physical chemistry; ferrous metallurgy
Dr. Juhua Zhang

E-Mail Website
Guest Editor
1. School of Materials and Metallurgy, Wuhan University of Science and Technology, Wuhan, China
2. School of Chemical Engineering, Aalto University, Espoo, Finland
Interests: physical chemistry; non-ferrous metallurgy
Prof. Dr. Xuefeng She

E-Mail Website
Co-Guest Editor
State Key Laboratory of Advanced Metallurgy, University of Science and Technology Beijing, Beijing, China
Interests: ferrous metallurgy
Dr. Yun Li

E-Mail Website
Co-Guest Editor
School of Metallurgy and Environment, Central South University, Changsha, China
Interests: non-ferrous metallurgy

Special Issue Information

Dear Colleagues,

Ferrous and Non-ferrous metals are widely consumed in human society. Specifically, iron (ferrous) and copper (non-ferrous) are usually considered as most important commodities; Precious (non-ferrous) metals such as gold and silver are with strong monetary attributes; Rare metals (non-ferrous) such as vanadium and titanium are usually used in the aviation and military industries…

However, these metals are always not available naturally. Separation, extraction and purification are indispensable. Most methods and processes are traditional, high energy-consuming and with high carbon dioxide emissions.

In this special issue, we invite papers that discuss the recent progress in separation and extraction of ferrous and non-ferrous metals. These efforts are realizing a sustainable world.

The topics include separation and extraction of metals from complex resources, low-carbon and energy-conservation optimization of traditional processes, innovative separation and extraction of ferrous and non-ferrous metals, experimental methods and physical chemistry for separation, extraction, and purification, and other new findings.

Dr. Wei Zhang
Dr. Juhua Zhang
Prof. Dr. Xuefeng She
Dr. Yun 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. Separations 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

  • separation
  • extraction
  • ferrous metal
  • non-ferrous metal
  • physical chemistry

Published Papers (3 papers)

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Research

17 pages, 4909 KiB  
Article
Prediction of the Vanadium Content of Molten Iron in a Blast Furnace and the Optimization of Vanadium Extraction
by Hongwei Li, Xin Li, Xiaojie Liu, Xiangping Bu, Shujun Chen, Qing Lyu and Kunming Wang
Separations 2023, 10(10), 521; https://doi.org/10.3390/separations10100521 - 25 Sep 2023
Cited by 1 | Viewed by 1054
Abstract
The vanadium content of molten iron is an important economic indicator for a vanadium–titanium magnetite smelting blast furnace, and it is of great importance in blast furnace production to be able to accurately predict it and optimize the operation of vanadium extraction. Based [...] Read more.
The vanadium content of molten iron is an important economic indicator for a vanadium–titanium magnetite smelting blast furnace, and it is of great importance in blast furnace production to be able to accurately predict it and optimize the operation of vanadium extraction. Based on the historical data of a commercial blast furnace, the clean data were obtained by processing the missing data and outlier data for data mining analysis and model development. A combined wavelet-TCN model was used to predict the vanadium content of molten iron. The average Hurst index after wavelet transform was calculated to reduce the complexity of the wavelet transform layer selection and the model computation time. The results show that compared to single models, such as LSTM, LSTM with attention, and TCN, the combined model based on wavelet-TCN (a = 5) had an improvement of about 11~17% in R2, and the prediction accuracy was high and stable, which met the practical requirements of blast furnace production. The factors affecting the vanadium content of molten iron were analyzed, and the measures to increase the vanadium content were summarized. A blast furnace should avoid increasing the titanium dioxide load, increase the vanadium load appropriately, and keep the relevant operating parameters within the appropriate range in order to achieve the optimization of vanadium extraction from molten iron. Full article
(This article belongs to the Special Issue Research Progress in Separation and Extraction of Ferrous and Non-ferrous Metals)
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13 pages, 2613 KiB  
Article
Properties of Glass-Ceramics Prepared from Industrial Multi-Wastes
by Zuoliang Zhang, Heli Ma, Chunlei Wu, Ye Sun, Ren Chen and Xiaoying Guo
Separations 2023, 10(9), 498; https://doi.org/10.3390/separations10090498 - 12 Sep 2023
Viewed by 1495
Abstract
Because of their excellent properties, glass-ceramics have been widely developed and applied in many fields, and there are many potential application values to be disseminated. The preparation of glass-ceramics from industrial slag and metallurgical waste provides a new way for the comprehensive utilization [...] Read more.
Because of their excellent properties, glass-ceramics have been widely developed and applied in many fields, and there are many potential application values to be disseminated. The preparation of glass-ceramics from industrial slag and metallurgical waste provides a new way for the comprehensive utilization of solid waste. Coal gangue is the largest of all kinds of industrial waste slag, while iron tailings and high-carbon ferrochrome slag also occupy a large proportion of China’s industrial solid waste. With cheap industrial solid waste as the main raw material, the production of high-value-added glass-ceramics can reduce pollution, protect the ecological environment, and have good economic and social benefits. Cordierite glass-ceramics were prepared using the sintering method with coal gangue, iron tailings, and high-carbon ferrochrome slag as the main raw materials. Meanwhile, an iron silicon alloy containing chromium was obtained. The heat treatment system of basic glass was determined by differential scanning calorimetry (DSC), and the sintered product was analyzed by X-ray diffraction (XRD) and scanning electron microscopy (SEM). An orthogonal test was used to analyze the effects of the mass of basic glass powder, molding pressure, and holding time on the grain size and crystallinity of the samples. The hardness, acid and alkali resistance, density, and water absorption of the sintered products were determined. The results show that the main crystal phase of the prepared glass-ceramics is cordierite. The optimal combination for the green body is “basic glass powder mass 6 g, molding pressure 35 MPa, holding time 10 min”. The properties of glass-ceramics are good. At the crystallization temperature of 970 °C, the Vickers hardness is up to 866 HV, and the bulk density is up to 2.99 g/cm3. This study may provide a useful reference for the treatment of industrial solid waste. Full article
(This article belongs to the Special Issue Research Progress in Separation and Extraction of Ferrous and Non-ferrous Metals)
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17 pages, 6172 KiB  
Article
Numerical Calculation and 3-D Imaging of the Arrhenius Temperature Integral
by Wei Zhang, Qiaoyu Zheng, Xiaobing Yu, Yansong Shen and Kui Li
Separations 2023, 10(9), 480; https://doi.org/10.3390/separations10090480 - 31 Aug 2023
Cited by 1 | Viewed by 699
Abstract
The Arrhenius temperature integral is typically used in non-isothermal kinetic analysis, which is widely applied in gas–solid reactions in separation processes. In previous studies, researchers provided various methods to solve the temperature integral, but the error usually became significant when the value of [...] Read more.
The Arrhenius temperature integral is typically used in non-isothermal kinetic analysis, which is widely applied in gas–solid reactions in separation processes. In previous studies, researchers provided various methods to solve the temperature integral, but the error usually became significant when the value of x (x = Ea/RT) was too large or too small. In this paper, we present a new series method and design a computer program to calculate the temperature integral. According to the precise calculation of the temperature integral, we first reveal the relationship among the integral, the temperature, and the activation energy, and we find an interesting phenomenon in which the 3-D image of the temperature integral is of self-similarity according to fractal theory. The work is useful for mechanism and theoretical studies of non-isothermal kinetics. Full article
(This article belongs to the Special Issue Research Progress in Separation and Extraction of Ferrous and Non-ferrous Metals)
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Planned Papers

The below list represents only planned manuscripts. Some of these manuscripts have not been received by the Editorial Office yet. Papers submitted to MDPI journals are subject to peer-review.

Title: Microstructural evolution of wüstite after reacting with H2 and CO-CO2 at low temperatures
Author: Zhang
Highlights: FexO is stable after rudeced at 534 ℃ for 150 min. Fe and Fe3O4 generate out of the wüstite substrate in the form of particles. FexO reacting with CO-CO2 is more seriously affected by Boudouard reaction.

Title: Numerical calculation and 3-D Imaging of the Arrhenius Temperature Integral
Author: Zhang
Highlights: (1) The temperature integral is accurately calculated by present method; (2) The reason why the solution is always divergent is interpreted; (3) The 3-D imaging of the temperature integral is done.

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