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The document discusses chemical reactions that occur in cement kilns during the manufacturing of cement clinker. As the raw materials are heated in the kiln, they undergo three main reactions: 1) Evaporation of water from shale above 350°C. 2) Calcination of calcium carbonate (CaCO3) into calcium oxide (CaO) and carbon dioxide (CO2) above 850°C. 3) After all the CaCO3 is consumed, the temperature rises further as energy is no longer absorbed by the endothermic calcination reaction.

Author

Orane Drake

Language

EN