Application of a bench-scale Stairmand cyclone separator as a convective dryer of iron ore pellet feed.
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| Title: | Application of a bench-scale Stairmand cyclone separator as a convective dryer of iron ore pellet feed. |
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| Authors: | Genaro, Luana Boger1 (AUTHOR) luana.genaro@outlook.com, Souza Pinto, Thiago C.2 (AUTHOR), Sarkis, Alfredo M.2 (AUTHOR), de Pádua, Thiago Faggionde1 (AUTHOR), Freire, José Teixeira1 (AUTHOR), Béttega, Rodrigo1 (AUTHOR) |
| Source: | Drying Technology. 2025, Vol. 43 Issue 6, p1006-1025. 20p. |
| Subjects: | Iron ores, Machine separators, Energy consumption, Cyclones, High temperatures |
| Abstract: | Evaluation was made of the performance of a Stairmand-type bench cyclone as a convective dryer for iron ore pellet feed. Tests were conducted at moisture contents of 0.02, 0.06, and 0.10 kgwater·kgwet solid−1, with drying temperatures of 70 °C, 80 °C, and 90 °C, and air velocities ranging from 10 to 30 m·s−1. Specific energy consumption decreased with air velocity up to a minimum, then increased at higher velocities and temperatures. The cyclone achieved over 69.9 ± 0.9% moisture reduction, showing high potential for drying iron ore. Unlike conventional drying, where higher air velocity enhances drying, it was observed that at higher moisture content and solid mass flow rate, increased air velocity raised underflow moisture content due to higher solids entrainment and reduced particle residence time. These findings highlight the promising potential of the Stairmand cyclone as a dryer for fine iron ore particles. [ABSTRACT FROM AUTHOR] |
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| Database: | Engineering Source |
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| Abstract: | Evaluation was made of the performance of a Stairmand-type bench cyclone as a convective dryer for iron ore pellet feed. Tests were conducted at moisture contents of 0.02, 0.06, and 0.10 kgwater·kgwet solid−1, with drying temperatures of 70 °C, 80 °C, and 90 °C, and air velocities ranging from 10 to 30 m·s−1. Specific energy consumption decreased with air velocity up to a minimum, then increased at higher velocities and temperatures. The cyclone achieved over 69.9 ± 0.9% moisture reduction, showing high potential for drying iron ore. Unlike conventional drying, where higher air velocity enhances drying, it was observed that at higher moisture content and solid mass flow rate, increased air velocity raised underflow moisture content due to higher solids entrainment and reduced particle residence time. These findings highlight the promising potential of the Stairmand cyclone as a dryer for fine iron ore particles. [ABSTRACT FROM AUTHOR] |
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| ISSN: | 07373937 |
| DOI: | 10.1080/07373937.2025.2479874 |
