Calcination kinetics of limestone and the microstructure of nascent CaO
The calcination kinetics of limestone was investigated by TGA at 600-1000-degrees-C and from 1 mbar to 1 atm. The temperature, total pressure, CO2 partial pressure and particle size affect the calcination rate. Above 90% of calcination efficiency can be reached in less than 2.5 s at 1000-degrees-C and 1 mbar. Under the conditions of eliminating all diffusion resistances, the instantaneous rate of