| CAS No.: | 1305-62-0 |
|---|---|
| Formula: | Ca(Oh)2 |
| EINECS: | 215-137-3 |
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| color | whiteness>95% |
| raw material | limestone |
| apperance | powder |
| purity | >90% >95% |
| application | waste water treatment, desulphurization |
| package | 25kg/1000kg Plastic Lined Top-Grade PP woven Bag |
| grade | industrial |
| loading capacity | 16-18tons/20' container |
Hydrated lime is a type of dry powder made from limestone. It is created by adding water to quicklime in order to turn oxides into hydroxides. Combined with water and sand or cement, hydrated lime is most often used to make mortars and plasters. Its chemical name is calcium hydroxide, or Ca(OH)2.
When making hydrated lime, a manufacturer must first make quicklime. Quicklime is made directly from the calcination in raw limestone by the process of calcining and consists of calcium oxide and magnesium oxide. In this process, limestone is first broken up to reduce its size. Then it is washed and taken to kilns to be heated through a three step process: preheating, calcining, and cooling. Once cooled, the quicklime is crushed and then water is added.
Also called slaked lime, hydrated lime is a good bonding agent and is watertight. It is also strongly alkaline, having a pH of 12.4. For this reason, it can be used to neutralize acid, in water and sewage treatment, and to stabilize soil. This also means it will cause skin and eye irritation if it comes in contact with the body, and inhalation of dust may cause health problems. Gloves, eye protection, and masks should be worn at all times when working with these substances.
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