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Abstract
This paper presents a comprehensive study on the production and reduction of high-quality iron ore pellets characterized by a basicity index nearing 0.5 and diameters ranging from 1 to 2 cm. The reduction process was carried out in a hydrogen atmosphere at temperatures spanning 800–1000 ◦ C and a pressure of 8 bar. Initial f indings revealed substantial variations in pellet density and compressive strength, attributed to their mean dimensions. To delve into the microstructural transformations occurring during reduction, meticulous microtomographic analyses were conducted on each pellet before and after the reduction process. The research assessed reducibility factors such as porosity, pore size, and tortuosity adjustments across diverse reduction conditions. The study highlights the intimate connection between the reduction process rate, processing parameters, and pellet microstructure. Furthermore, the metallization tendencies were explored through extensive reduction experiments involving multiple pellets. These findings offer crucial insights into optimizing iron ore pellet performance during production and reduction processes, contributing to advancements in industrial applications.
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Authors (5)
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Pasquale Cavaliere
- Department of Innovation Engineering, University of Salento, Via per Arnesano, 73100 Lecce, Italy
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Behzad Sadeghi
- Department of Innovation Engineering, University of Salento, Via per Arnesano, 73100 Lecce, Italy
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Leandro Dijon
- VALE, Route de Pallatex 29 St-Prex, 1162 Losanna, Switzerland
Cite as
Full text
- Publication version
- Accepted or Published Version
- DOI:
- Digital Object Identifier (open in new tab) 10.1016/j.mineng.2024.108746
- License
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Details
- Category:
- Articles
- Type:
- artykuły w czasopismach
- Published in:
-
MINERALS ENGINEERING
no. 213,
ISSN: 0892-6875 - Language:
- English
- Publication year:
- 2024
- Bibliographic description:
- Cavaliere P., Sadeghi B., Dijon L., Laska A., Koszelow D.: Three-dimensional characterization of porosity in iron ore pellets: A comprehensive study// MINERALS ENGINEERING -Vol. 213, (2024), s.108746-
- DOI:
- Digital Object Identifier (open in new tab) 10.1016/j.mineng.2024.108746
- Sources of funding:
-
- Free publication
- Verified by:
- Gdańsk University of Technology
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