Calcium hydroxide is a chemical compound with the chemical formula Ca(OH)2. It is a colorless crystal or white powder, is created when calcium oxide (called lime or quicklime, but unrelated to the citrus fruit (lime)) is slaked with water. A traditional name for calcium hydroxide is slaked lime. It is also called hydrated lime.
If heated, calcium hydroxide decomposes into calcium oxide and water. It is soluble in water and the solution, called lime water, is a medium strong base reacting violently with acids and attacking many metals in presence of water.
Calcium hydroxide is mainly used as a form of lime, in water and sewage treatment and improvement of acid soils. Its strong basic properties also give it varied uses, such as creating milk of lime and in the tanning of leather.
An overdose of calcium hydroxide includes many dangerous symptoms, including difficulty breathing, gastrointestinal bleeding, hypotension, and a severe change in blood pH, which is damaging to the internal organs.
The slakedlime aqueous suspension separated by the separator may be recirculated via a heat exchanger in a further recirculation loop to the output of the gas/liquid separator, eg.
Slakedlime and carbon dioxide may be delivered to the reactor and reacted together in a continuous, semi-continuous or batch process.
Slakedlime suspensions may be produced by the method according to the present invention which are not too viscous, ie.
Slaking, Chemical composition and aging of the putty lime with special chapter on problems with magnesium in dolomitic lime (common construction lime) for buon fresco.
To form the plaster for fresco work, the lime is "slaked." The slaking process, which requires the addition of 2 or 3 molecules of water for each molecule of lime, yields calcium pasteor lime putty, an aqueous gel of thin crystals of calciumhydroxide.
Historically, lime was slaked in pits or troughs over a period of at least six months to obtain lime putty of the desired consistency.
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