Process for producing calcium hydroxide

A process for producing dry calcium hydroxide by slaking finely divided or ground, softly burnt lime, where the lime is intensively and homogeneously mixed with a slaking liquid consisting of water and a reaction-retarding, organic solvent, comprising the steps of:

• mixing the slaking liquid consisting of 30 to 50 parts by volume water and 70 to 50 parts by volume of organic solvent with the lime at a temperature below 45.degree. C. in a mixing vessel;
• transferring the reaction mixture to a main reaction vessel for reacting where the mixture is heated by a heating device to a temperature of from 50.degree. to 70.degree. C.;
• and
• transferring the mixture to a final reaction vessel for final reacting whereby calcium hydroxide is formed;
• the ratio between lime and slaking liquid in the mixing vessel being such that a final reaction temperature of from 85.degree. to 110.degree. C. is reached in said final reaction vessel.