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    STUDIA CHEMIA - Issue no. 4 / 2007  
         
  Article:   KINETIC STUDY OF CALCINATION FOR PRECIPITATE CALCIUM CARBONATE.

Authors:  SIMION DRĂGAN, ADINA GHIRIȘAN.
 
       
         
  Abstract:   In this paper, the calcination reaction of precipitate calcium carbonate (PCC) was investigated, using thermogravimetric analysis technique. All experiments were performed in isothermal conditions, within a temperature range of 1073-1223 K, with main diameters of granules between 0.063 mm and 0.45 mm. Two models were applied to the experimental results and it was found that the Avraami-Erofeev-Kolmogorov is the best model which has fitted the experimental data. The equation of mathematical model is  where and .  
         
     
         
         
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