Calcium hydroxide, also known as hydrated lime or slaked lime, is a chemical compound with the chemical formula Ca(OH)2. It is produced by the reaction of calcium oxide (lime) with water, a process known as slaking.
The manufacturing process of calcium hydroxide typically involves the following steps:
Quicklime production: Calcium hydroxide is produced from quicklime, which is made by heating limestone to high temperatures in a kiln.
Slaking: Quicklime is added to water in a slaking tank, where it reacts with the water to form calcium hydroxide. The slaking process generates heat and produces a lot of steam, so the reaction is typically carried out in a specially designed slaking tank with a mixer and a venting system.
Separation and filtration: After slaking, the mixture of calcium hydroxide and water is allowed to settle, and the excess water is decanted off. The remaining slurry is then filtered to remove any impurities.
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