Abstract
| Original language | English |
|---|---|
| Publication date | 2013 |
| Number of pages | 19 |
| Publication status | Published - 2013 |
| Event | 8th International Conference on Multiphase Flow - Jeju, Korea, Republic of Duration: 26 May 2013 → 31 May 2013 |
Conference
| Conference | 8th International Conference on Multiphase Flow |
|---|---|
| Country | Korea, Republic of |
| City | Jeju |
| Period | 26/05/2013 → 31/05/2013 |
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Keywords
- Modeling
- Discretization
- Calcination
- Dehydroxylation
- Kaolin
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Modeling of calcination of single kaolinitic clay particle. / Gebremariam, Abraham Teklay; Yin, Chungen; Rosendahl, Lasse.
2013. Paper presented at 8th International Conference on Multiphase Flow, Jeju, Korea, Republic of.Research output: Contribution to conference without publisher/journal › Paper without publisher/journal › Research › peer-review
TY - CONF
T1 - Modeling of calcination of single kaolinitic clay particle
AU - Gebremariam, Abraham Teklay
AU - Yin, Chungen
AU - Rosendahl, Lasse
PY - 2013
Y1 - 2013
N2 - The present work aims at modeling of the calcination (dehydroxylation) process of clay particles, specifically kaolinite, and its thermal transformation. For such purpose, 1D single particle calcination model was developed based on the concept of shrinking core model to assess the dehydroxylation process with special emphasis given to the heat and mass transfer phenomena on the particle surface, heat conduction from surface to reaction front, chemical kinetics at reaction front and diffusion of the water through the product layer. The mathematical model is used to predict the transient temperature distribution within the clay particle and simultaneous density changes due to the reaction kinetics. Accordingly, a particular residence time was noticed as a point where kaolinitic clay particles attain optimum conversion to metakaolinite which is pozzolanic.
AB - The present work aims at modeling of the calcination (dehydroxylation) process of clay particles, specifically kaolinite, and its thermal transformation. For such purpose, 1D single particle calcination model was developed based on the concept of shrinking core model to assess the dehydroxylation process with special emphasis given to the heat and mass transfer phenomena on the particle surface, heat conduction from surface to reaction front, chemical kinetics at reaction front and diffusion of the water through the product layer. The mathematical model is used to predict the transient temperature distribution within the clay particle and simultaneous density changes due to the reaction kinetics. Accordingly, a particular residence time was noticed as a point where kaolinitic clay particles attain optimum conversion to metakaolinite which is pozzolanic.
KW - Modeling
KW - Discretization
KW - Calcination
KW - Dehydroxylation
KW - Kaolin
M3 - Paper without publisher/journal
ER -