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Vol 26 No Supplementary Issue

Copyright (c) 2014 Hayrettin Eroglu1, M. Sahin Gulaboglu2, A. Kadir Özer2

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This work is licensed under a Creative Commons Attribution 4.0 International License.

Calcination Kinetics of Phosphate Rock in CO2 Atmosphere

https://doi.org/10.14233/ajchem.2014.19009
Hayrettin Eroglu1
1Department of Biomedical Engineering, Faculty of Engineering, Atatürk Üniversity, 25240 Erzurum, Turkey 2Department of Chemical Engineering, Faculty of Engineering, Atatürk Üniversity, 25240 Erzurum, Turkey *Corresponding author: Fax: +90 442 2312766; Tel: +90 442 2314547; E-mail: heroglu@atauni.edu.tr
M. Sahin Gulaboglu2
1Department of Biomedical Engineering, Faculty of Engineering, Atatürk Üniversity, 25240 Erzurum, Turkey 2Department of Chemical Engineering, Faculty of Engineering, Atatürk Üniversity, 25240 Erzurum, Turkey *Corresponding author: Fax: +90 442 2312766; Tel: +90 442 2314547; E-mail: heroglu@atauni.edu.tr
A. Kadir Özer2
1Department of Biomedical Engineering, Faculty of Engineering, Atatürk Üniversity, 25240 Erzurum, Turkey 2Department of Chemical Engineering, Faculty of Engineering, Atatürk Üniversity, 25240 Erzurum, Turkey *Corresponding author: Fax: +90 442 2312766; Tel: +90 442 2314547; E-mail: heroglu@atauni.edu.tr

Corresponding Author(s) : Hayrettin Eroglu1

Asian Journal of Chemistry, Vol 26 No Supplementary Issue

Abstract

This study, examined the calcination of phosphate rock in fluidized bed, the effects of gas flow rate, temperature, particle size, calcination time and the rate of CO2 on the decomposition rate. Calcination rate was observed to increase with increasing gas flow rate and temperature, but decreased with increasing particle size and CO2 ratio in the fluid gas medium. Moreover, phosphate rock calcination was detected to conform to the unreacted core model among the heterogeneous reaction models. Both the fact that particle size is much more effective and the results of the Arrhenius equality support the transfer mechanism from ash film. In addition, the fact that the flow rate of the gas is very much effective suggests that the controlled transfer mechanism from fluid film affects the calcination as well. However, it can be proposed that the step which determines the velocity of the calcination reaction is the mass transfer controlled mechanism of CO2 in the ash film with 31.08 kJ/mol activation energy.

Keywords

Phosphate rock Calcination Kinetics Modeling.
Eroglu1, H., Sahin Gulaboglu2, M., & Kadir Özer2, A. (2014). Calcination Kinetics of Phosphate Rock in CO2 Atmosphere. Asian Journal of Chemistry, 26(27), 39–44. https://doi.org/10.14233/ajchem.2014.19009
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