Hydrated lime
Water Treatment – Adjusts pH, removes impurities, and softens water in municipal and industrial systems.
Construction – Used in mortar, plaster, and soil stabilization to improve durability and workability.
Wastewater & Flue Gas Treatment – Neutralizes acidic effluents and scrubs SO₂ emissions from industrial exhaust.
Mining & Metallurgy – Aids in ore processing and pH control in tailings management.
Agriculture – Soil amendment to reduce acidity and improve crop yields.
Product Introduction
Hydrated lime, with its scientific name being calcium hydroxide and chemical formula Ca(OH)₂, is also referred to as slaked lime in the construction and industrial sectors. It appears as a white powdered solid and is produced through a chemical reaction between quicklime (calcium oxide, CaO) and water.
Scope of application
- Adjust the pH value of acidic sewage, widely used in sewage treatment in electroplating, chemical industry, circuit board, pickling, printing and dyeing, papermaking and other industries
- Used to remove phosphates and most heavy metals, kill bacteria and viruses;
- Used to increase the pH value in water plants.
- Used for preparing lime mortar in building materials.
Quality standards
| Item
|
index | ||
| High-quality | Medium | Qualified products | |
| Calcium hydroxide % | ≥95 | ≥90 | ≥85 |
| Magnesium and alkali metal % | ≤3.0 | — | — |
| Iron % | ≤0.1 | — | — |
| Acid insoluble matter % | ≤0.5 | ≤1.0 | ≤1.5 |
| Loss on drying % | ≤1.0 | 2.0 | 3.0 |
| Sieve residue (0.045mm test sieve) w% | 2 | — | — |
| — | 4 | 5 | |
Usage
There are two ways to add hydrated lime in the sewage treatment of hydrated lime: dry and wet. Dry method: hydrated lime powder is directly added in the reaction tank, without mixing, and the pH value can be coarsely adjusted in the strong acidic wastewater, and its dosage is mainly regulated by adjusting the pH value.
Wet method: first prepare the solution, prepare the powdered product into an aqueous solution with a concentration of 5%~8%, and stir continuously until the suspension is added to the sewage for application.
Packaging, storage and transportation
25Kg outer covered woven bag
【Precautions】Store in a cool, ventilated and dry place, store at 4°C-25°C, and have a stable period of 6 months.
Use in combination
Hydrated lime and polyaluminium chloride：Enhance flocculation and sedimentation to efficiently remove COD
Click：Polyalumium Chlorine
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