Abstract

This study has been carried out to investigate the non-isothermal behaviors and kinetic parameter of calcium carbonate by different thermal analysis methods. At the heating rate of 10°C/min, the onset calcination temperature, the peak and final temperatures of calcium carbonate were 612°C, 748°C, and 890°C respectively. As the heating rate of the calcium carbonate increased from 5°C/min to 20°C/min, the peak temperature increased from 719°C to 782°C. The activation energies of the calcium carbonate calculated by the methods of Kissinger and Freeman-Carroll were 40.15 kcal/mol and 43.47 kcal/mol, respectively.

• Keywords: Calcium carbonate;Calcination;Non-isothermal behavior;Thermal decomposition;Activation energy;;