Topic Editors

Faculty of Engineering and Architecture, Universidad Arturo Prat, Iquique 1100000, Chile
Dr. Edelmira Gálvez
Departamento de Ingeniería Metalúrgica y Minas, Universidad Católica del Norte, Antofagasta, Chile
Departamento de Ingeniería Química y Procesos de Minerales, Universidad de Antofagasta, Antofagasta, Chile

Recent Advances in Metallurgical Extractive Processes, 2nd Volume

Abstract submission deadline
25 November 2024
Manuscript submission deadline
25 January 2025
Viewed by
741

Topic Information

Dear Colleagues,

Due to the accelerated growth in the population and emerging economies, there is a high demand for critical metals, which are indispensable for manufacturing advanced technology, green technology, and the development of emerging industries. Mining extractive processes are fundamental activities for the production of raw materials and the economies of several countries. For example, copper mining contributes 10% of the GDP in Chile and generates more than 500,000 jobs. However, at present, this industry is facing varied challenges, such as the following:

  • A decrease in average mineral grades;
  • Complex mineralogies with a high presence of gangue and clays;
  • Subsequent increases in production costs;
  • Excessive generation of environmental liabilities, mainly flotation tailings;
  • Scarcity of aquifer water and government restrictions for its use in production processes;
  • A need to reduce the costs of electrical supply. As a result, it then becomes necessary to generate novel extractive metallurgical processes that must focus on the following:
  • Increasing the recovery of metals from conventional processes;
  • Diversifying the extraction of other elements and obtain byproducts from the main commodity that can be exploited (one example is the enormous growth in the molybdenum industry, which is obtained as a byproduct of copper flotation processes);
  • Generating new operational strategies for essential resources, such as water and electricity;
  • Reusing industrial waste and establishing procedures for its remediation.

We cordially invite the submission of scientific articles to this Topic that are focused on the research areas of leaching, solvent extraction, electrowinning, flotation, thickening, pyrometallurgy, and waste treatment and reuse.

Dr. Norman Toro
Dr. Edelmira Gálvez
Dr. Ricardo Jeldres
Topic Editors

Keywords

  • hydrometallurgy
  • pyrometallurgy
  • flotation
  • rheology
  • statistics
  • simulation
  • clays
  • waste treatment
  • ionic liquids
  • tailings

Participating Journals

Journal Name Impact Factor CiteScore Launched Year First Decision (median) APC
ChemEngineering
ChemEngineering
2.8 4.0 2017 29.6 Days CHF 1600 Submit
Compounds
compounds
- 2.3 2021 40.1 Days CHF 1000 Submit
Materials
materials
3.1 5.8 2008 15.5 Days CHF 2600 Submit
Metals
metals
2.6 4.9 2011 16.5 Days CHF 2600 Submit
Alloys
alloys
- - 2022 19.4 Days CHF 1000 Submit
Mining
mining
- 2.8 2021 19.6 Days CHF 1000 Submit

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Published Papers (1 paper)

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15 pages, 12488 KiB  
Article
Co-Extraction of Aluminum and Silicon and Kinetics Analysis in Carbochlorination Process of Low-Grade Bauxite
by Xinxin Zhao, Yan Liu, Long Wang, Yutong Hua, Tianhao Cheng, Tingan Zhang and Qiuyue Zhao
Materials 2024, 17(14), 3613; https://doi.org/10.3390/ma17143613 - 22 Jul 2024
Viewed by 443
Abstract
Addressing the issue that the Bayer process is not suitable for low-grade bauxite, carbochlorination was proposed to recover aluminum and silicon from low-grade bauxite. This study focused on the behavior of aluminum and silicon during the carbochlorination process of low-grade bauxite. The impact [...] Read more.
Addressing the issue that the Bayer process is not suitable for low-grade bauxite, carbochlorination was proposed to recover aluminum and silicon from low-grade bauxite. This study focused on the behavior of aluminum and silicon during the carbochlorination process of low-grade bauxite. The impact of various process parameters on the chlorination efficiency was investigated, and the chlorination mechanism and kinetics of aluminum and silicon chlorination in bauxite were analyzed and discussed. Under optimal experimental conditions, the chlorination efficiency of Al2O3 and SiO2 reached 94.93% and 86.32%, respectively. The carbochlorination of aluminum and silicon in bauxite adhered to a shrinking, unreacted core model governed by gas diffusion within the product layer. This process can be bifurcated into two stages. Additionally, calculations were conducted to determine the apparent activation energy and reaction order of the chlorination processes involving Al2O3 and SiO2. Examining the chlorination mechanism revealed that the bauxite carbochlorination encompasses transformations among various minerals. Notably, the aluminum component prefers to participate in the carbothermal chlorination reaction over silicon. Full article
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