화학공학소재연구정보센터
홈 로그인 로그아웃 연락처 사이트맵
Journal of Industrial and Engineering Chemistry, Vol.19, No.3, 886-897, May, 2013
DOI10.1016/j.jiec.2012.11.004  Export Citation
Kinetic study of the thermal decomposition process of calcite particles in air and CO2 atmosphere
A. Escardino†, J. Garcı´a-Ten, C. Feliu, A. Saburit, and V. Cantavella
  • Instituto de Tecnologı´a Cera´mica, Asociacio´n de Investigacio´n de las Industrias Cera´micas, Universitat Jaume I, Campus Universitario Riu Sec, 12006 Castello´n, Spain
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The thermal decomposition process of calcite particles (0.45-3.60 mm average diameter), made up of porous agglomerates of very small CaCO3 microcrystals, was studied in the 975-1216 K temperature range. The experiments were carried out under isothermal conditions in air atmosphere, in CO2 atmosphere, as well as in a gas stream comprising different concentrations of air and CO2. An equation is proposed that relates the calcite conversion degree to both reaction time and operating conditions. The equation satisfactorily fits to the experimental results obtained in the entire tested range of particle sizes and temperatures in all the studied carbon dioxide concentrations.
Keywords:Kinetics;Particle processing;Calcination;Solid-gas phase reaction
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