Usually, plants produce lime, characterized by remnants of sieve 008 to 2-7%, which roughly corresponds to the specific surface of 3500 5000sm / g. Hydrated lime hydrated lime process is the reaction: CO + H2O = Ca (OH) 2 + 65.1 kJ reaction proceeds rapidly hydrated lime, with more heat. Water penetrates into the depth of calcareous grains enter into chemical reaction with CO, and released when the heat turns the water into steam. Since the passage of water vapor accompanied by an increase in volume creates internal tensile stress in the grains of lime, leading to their refinement into a fine powder. Damping - the specific process used only in the manufacture of lime. Released heat causes boiling water, so quicklime is called "kipelkoy." Quenching process is slowed down due to the formation on the surface layer of calcareous particles dough hydration products, which prevents access of water to the inner layers source of grain. To speed up the clearing is recommended to crush the lime, stirring vigorously quenching mass, and also use the heated water.
When mixed with the grain surface as a "come off" hydrate film and gives you access to the inner layers neprogasivshimsya. The nature of the process of quenching also depends on the presence of impurities. When quenching in pushonku grains of silicates and calcium aluminate formed during roasting, not extinguished and converted into a powder, so they must be separate, separately doizmelchat, and then mix with the "pushonkoy" to improve its hydraulic properties.
When mixed with the grain surface as a "come off" hydrate film and gives you access to the inner layers neprogasivshimsya. The nature of the process of quenching also depends on the presence of impurities. When quenching in pushonku grains of silicates and calcium aluminate formed during roasting, not extinguished and converted into a powder, so they must be separate, separately doizmelchat, and then mix with the "pushonkoy" to improve its hydraulic properties.
