hydrate lime (pushonka, hydrated lime), the formula of which - Ca (OH) 2, does not require special storage conditions.The material is allowed to keep the open space.It requires only a canopy that protects it from the rain.
For a complete quenching of fifty-six kilograms of lime powder should spend about forty gallons of water, which is about sixty-nine per cent of lime taken.In the event that less fluid is taken, the process is incomplete.
If slaked lime is produced in an enclosed space, and steam is not able to be removed at the same time, the process will be complete and with less liquid.However, the amount of water should be approximated to the theoretically correct one.
In contact with H2O, "quicklime" (ie, from which make lime) begins to absorb.In the process of raw materials crack, spilling slowly into fine powder.This marked the formation of the heat in large quantities.
The lime cleaner, the better and faster it breaks down in the process of extinction.The result is a powder pushonki more delicate and bulky.Slaked lime has a capacity of three to three and a half times greater than the feedstock.This increase occurs with a sufficiently large force.These factors are, for example, splitting stones.However, it should be said that such a strong increase is made possible by loosening the substance, that is becomes greater than the total pore volume.
Hydrated lime is made, usually in the factory.The most common method in which a pile formed of pieces "quicklime" Doschatoe platform on site or compacted begin to pour water, sprinkling a layer of sand.The sand is needed to arrest the water vapor.
Another economically less profitable and therefore less frequently used method is the method of obtaining water immersion.Chunks "quicklime" while put in the basket (or iron woven from willow twigs) and lowered into H2O.Keep raw material until the water starts to turn white.It should be noted that this method is very time-consuming.
considered the most perfect method of converting raw material into a powder using exposure to hot steam.To quench this method uses an iron pot, strong enough and close tightly the neck.Capacity is equipped with a pressure gauge and a safety valve.The boiler is filled necessary amount of raw materials given volume increase as a result.Then water was poured in the desired quantity and hermetically closing the container, it begin to rotate.Thus, accelerating the process of spilling.Under the influence of high pressure boiler temperature rises up to one hundred degrees.Blanking is carried out as a result of fully and quickly.
Hydrated lime is poorly soluble in water.When mixing the sand and lime paste is obtained a solution which is widely used in the commission of finishing, in particular plaster, works.
