Modeling of calcination of single kaolinitic clay particle

Abraham Teklay Gebremariam, Chungen Yin, Lasse Rosendahl

Research output: Contribution to conference without publisher/journalPaper without publisher/journalResearchpeer-review

Abstract

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.
Original languageEnglish
Publication date2013
Number of pages19
Publication statusPublished - 2013
Event8th International Conference on Multiphase Flow - Jeju, Korea, Republic of
Duration: 26 May 201331 May 2013

Conference

Conference8th International Conference on Multiphase Flow
CountryKorea, Republic of
CityJeju
Period26/05/201331/05/2013

Fingerprint

clay
dehydroxylation
modeling
reaction kinetics
kaolinite
heat transfer
mass transfer
residence time
particle
kinetics
temperature
water

Keywords

  • Modeling
  • Discretization
  • Calcination
  • Dehydroxylation
  • Kaolin

Cite this

Gebremariam, A. T., Yin, C., & Rosendahl, L. (2013). Modeling of calcination of single kaolinitic clay particle. Paper presented at 8th International Conference on Multiphase Flow, Jeju, Korea, Republic of.
Gebremariam, Abraham Teklay ; Yin, Chungen ; Rosendahl, Lasse. / Modeling of calcination of single kaolinitic clay particle. Paper presented at 8th International Conference on Multiphase Flow, Jeju, Korea, Republic of.19 p.
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abstract = "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.",
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Gebremariam, AT, Yin, C & Rosendahl, L 2013, 'Modeling of calcination of single kaolinitic clay particle' Paper presented at 8th International Conference on Multiphase Flow, Jeju, Korea, Republic of, 26/05/2013 - 31/05/2013, .

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/journalPaper without publisher/journalResearchpeer-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 -

Gebremariam AT, Yin C, Rosendahl L. Modeling of calcination of single kaolinitic clay particle. 2013. Paper presented at 8th International Conference on Multiphase Flow, Jeju, Korea, Republic of.