(8a) MATHEMATICAL MODELLING OF REACTION KINETICS OF LIMESTONE CaCO3 DECARBONIZATION IN A STATIONARY FURNACE

It is well established that limestone decarbonization process is dependent on the operating temperature, partial pressure of evolved CO2 and it physico-mechanical properties. The rate of decarbonization or the velocity of formation of CaO zone is consequently dependent on the mentioned variable parameters. The decarbonization of CaCO3 is independent of the concentration of CaCO3 and CaO, but dependent on the partial pressure of CO2. In principle decarbonization can only take place when the C)2 partial pressure in the reaction is higher than that in the surrounding. The main objective of this work is to develop a predictive model to determine the kinetics of limestone decarbonization. Simulation of the developed model will help in explaining the interdependence of the technological parameters and also the development of new process route and technology.