Influence of storage conditions on the carbonation of powdered Ca(OH)2

The influence of relative air moisture, temperature and concentration of CO2 on the carbonation of Ca(OH)2 have been examined under normal climatic conditions. The calcium hydroxide used for this original work is a granular material. The importance of the hydrated state of Ca(OH)2 has also been studied in order to obtain complete carbonation. A three steps mechanism of carbonation has been proposed to help explain the observed phenomena. This work was carried out with the view to defining the optimal conditions for the storage of slaked lime.