Types of gas fluidization
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Due to the solid aerosol candidates' high density and small primary particle size, these are classified as Geldart Group C "hard to fluidize" materials, meaning they resist flowing along with a gas as primary particles, instead forming large (several microns) agglomerates.
“Due to the solid aerosol candidates’ high density and small primary particle size, these are classified as Geldart Group C “hard to fluidize” materials35, meaning they resist flowing along with a gas as primary particles, instead forming large (several microns) agglomerates.”
From Engineering and logistical concerns add practical limitations to stratospheric aerosol injection strategies (2025) · cites this paper as [35]
True fluidization of submicrometer calcium carbonate is exceedingly difficult.
“It turns out that true fluidization of submicrometer calcium carbonate (as for most micrometer-sized particles) is exceedingly difficult, as explained by Geldart (1973).”
From Methods for Dispersal of Precipitated Calcium Carbonate for Stratospheric Aerosol Injection (2021) · cites this paper as Geldart (1973)
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A numerical study of fluidization behavior of Geldart A particles using a discrete particle model
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CFD modelling of the fast pyrolysis of biomass in fluidised bed reactors. Part B
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- Authors
- Geldart, D.
- Affiliations
- University of Bradford (GB)
- Corresponding author
- Geldart, D.
- Venue
- Powder Technology
- Publisher
- Elsevier BV
- Published
- 1973-05
- Volume
- 7
- Issue
- 5
- Pages
- 285-292
- ISSN
- 0032-5910 (ISSN-L)
- OpenAlex
- W2126452156
- Semantic Scholar
- 9924866cf6b7f1d4e595b4fdd14478b67395536e
- Cited by
- 3,481
- References
- 10
- Citations by year
- 2026: 104 · 2025: 148 · 2024: 131 · 2023: 134 · 2022: 162 · 2021: 141 · 2020: 179 · 2019: 175 · 2018: 138 · 2017: 136 · 2016: 143 · 2015: 155 · 2014: 119 · 2013: 128 · 2012: 119
- FWCI
- 3.08
- Type
- journal article
- Language
- en
- Open access
- closed
- Locations
- Powder Technology (publishedVersion)
- Topics
- Physical Sciences › Engineering › Computational Mechanics › Granular flow and fluidized beds
- Physical Sciences › Engineering › Computational Mechanics › Heat and Mass Transfer in Porous Media
- Physical Sciences › Engineering › Biomedical Engineering › Fluid Dynamics and Mixing
- Keywords
- gas fluidization, minimum fluidization velocity, bubbling fluidization, spouted bed, particle size, particle density
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