The role that can be played in the elucidation of the limestone sulphation mechanism by thermal analysis methods with some
specific procedures is discussed. Contrasting examples of applications of thermoanalytical techniques using the variable conditions
are provided. These examples deal with the programmed thermal analysis using different gas sequences, the influence the calcination
and sulphation conditions on the capture of SO2, the effect of catalysts on limestone sulphation and the thermal stability of CaSO3. Two proposed mechanisms were supported by the phase identification of the solid products.