Modeling of calcination of single kaolinitic clay particle

Abraham Teklay Gebremariam, Chungen Yin, Lasse Rosendahl

Publikation: Konferencebidrag uden forlag/tidsskriftPaper uden forlag/tidsskriftForskningpeer review

Resumé

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.
OriginalsprogEngelsk
Publikationsdato2013
Antal sider19
StatusUdgivet - 2013
Begivenhed8th International Conference on Multiphase Flow - Jeju, Sydkorea
Varighed: 26 maj 201331 maj 2013

Konference

Konference8th International Conference on Multiphase Flow
LandSydkorea
ByJeju
Periode26/05/201331/05/2013

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

Emneord

    Citer dette

    Gebremariam, A. T., Yin, C., & Rosendahl, L. (2013). Modeling of calcination of single kaolinitic clay particle. Afhandling præsenteret på 8th International Conference on Multiphase Flow, Jeju, Sydkorea.
    Gebremariam, Abraham Teklay ; Yin, Chungen ; Rosendahl, Lasse. / Modeling of calcination of single kaolinitic clay particle. Afhandling præsenteret på 8th International Conference on Multiphase Flow, Jeju, Sydkorea.19 s.
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    title = "Modeling of calcination of single kaolinitic clay particle",
    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.",
    keywords = "Modeling, Discretization, Calcination, Dehydroxylation, Kaolin",
    author = "Gebremariam, {Abraham Teklay} and Chungen Yin and Lasse Rosendahl",
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    note = "8th International Conference on Multiphase Flow ; Conference date: 26-05-2013 Through 31-05-2013",

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    Gebremariam, AT, Yin, C & Rosendahl, L 2013, 'Modeling of calcination of single kaolinitic clay particle' Paper fremlagt ved, Jeju, Sydkorea, 26/05/2013 - 31/05/2013, .

    Modeling of calcination of single kaolinitic clay particle. / Gebremariam, Abraham Teklay; Yin, Chungen; Rosendahl, Lasse.

    2013. Afhandling præsenteret på 8th International Conference on Multiphase Flow, Jeju, Sydkorea.

    Publikation: Konferencebidrag uden forlag/tidsskriftPaper uden forlag/tidsskriftForskningpeer 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. Afhandling præsenteret på 8th International Conference on Multiphase Flow, Jeju, Sydkorea.