Journal of Powder Materials (한국분말재료학회지)

The Korean Powder Metallurgy & Materials Institute (한국분말재료학회 (*구 분말야금학회))
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Non-isothermal Behavior of Calcium Carbonate

탄산칼슘의 비등온 열적거동

  • Sohn, Yong-Un (Minerals Resource Research Division, Korea Institute of Geoscience & Mineral Resources) ;
  • Lim, Jae-Won (Minerals Resource Research Division, Korea Institute of Geoscience & Mineral Resources) ;
  • Choi, Good-Sun (Minerals Resource Research Division, Korea Institute of Geoscience & Mineral Resources)
  • 손용운 (한국지질자원연구원 광물자원연구본부) ;
  • 임재원 (한국지질자원연구원 광물자원연구본부) ;
  • 최국선 (한국지질자원연구원 광물자원연구본부)
  • Published : 2009.06.28
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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 $10^{\circ}C$/min, the onset calcination temperature, the peak and final temperatures of calcium carbonate were $612^{\circ}C$, $748^{\circ}C$, and $890^{\circ}C$ respectively. As the heating rate of the calcium carbonate increased from $5^{\circ}C$/min to $20^{\circ}C$/min, the peak temperature increased from $719^{\circ}C$ to $782^{\circ}C$. 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.

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References

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