The process of lime production involves the heating of limestone above its dissociation temperature. The process of heating is called calcinations, which is highly endothermic. The dissociation temperature of CaCO3 (calcite) is about 9000 C. During limestone dissociation, the reaction is facilitated by the continuous removal of CO2 evolved during Calcination. The chemical reaction to produce lime is represented below: CaCO3 (solid) + heat ↔ CaO (solid) + CO2 (gas)
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