Fig. 1. Thermodynamic equilibrium curve of CaCO3 calcination.
Fig. 2. Conversion of re-carbonation with variation of time at different temperature of four limestones (a) A (b) B (c) C and (d) D.
Fig. 3. SEM images (a) CaO and (b) CaCO3 from limestones A.
Fig. 4. Reaction temperature versus final conversion.
Fig. 5. Reactivity of limestone A through (a) SCM and (b) VRM.
Fig. 6. Arrhenius plots of four limestones (a) A, (b) B, (c) C and (d) D.
Table 1. Chemical analysis of the limestones
Table 2. Frequency Factor and Activation Energy
Table 3. Rate equation of re-carbonation
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