Calcium Hydroxide for Refining – Uses, Specifications & Applications
Calcium Hydroxide, commonly known as Hydrated Lime or Slaked Lime, is an important industrial chemical used in various refining and purification processes. Its chemical formula is Ca(OH)₂, and it is produced by reacting quicklime (CaO) with water in a process known as slaking.
Industrial calcium hydroxide is a fine white free-flowing powder that is widely used in industries such as metallurgy, chemical manufacturing, water treatment, and refining processes. Due to its strong alkaline nature, it helps remove impurities and neutralize acidic substances in many industrial applications.
What is Calcium Hydroxide?
Calcium Hydroxide is an inorganic compound widely used for chemical processing, refining, purification, and environmental treatment.
Basic Chemical Information
| Property | Details |
|---|---|
| Chemical Name | Calcium Hydroxide |
| Other Names | Hydrated Lime, Slaked Lime |
| Chemical Formula | Ca(OH)₂ |
| CAS Number | 1305-62-0 |
| Molecular Weight | 74.09 g/mol |
| Appearance | Fine Snow White Powder |
| Melting Point | 580°C |
| Boiling Point | 2850°C |
| Solubility | Slightly soluble in water |
Product Specifications
Industrial grade calcium hydroxide manufactured for refining processes follows strict quality standards.
| Parameter | Specification |
|---|---|
| Purity | 94%+ |
| Physical Form | Powder |
| pH Value | 11.0 – 12.4 |
| Density | 25–35 lb/cu ft |
| Specific Gravity | 2.24 g/cm³ |
| Moisture | NMT 0.5% |
| Shelf Life | 180 Days |
| Chemical Formula | Ca(OH)₂ |
| CAS Number | 1305-62-0 |
| HS Code | 25222000 |
Why Calcium Hydroxide is Used in Refining
Refining industries require chemicals that can remove impurities, neutralize acids, and stabilize chemical reactions. Calcium hydroxide is highly effective because of its alkaline nature and chemical stability.
Key Benefits
✔ Helps remove impurities during refining
✔ Neutralizes acidic solutions
✔ Improves chemical reaction efficiency
✔ Cost-effective refining agent
✔ Environmentally safer compared to many chemicals
Because of these advantages, calcium hydroxide is widely used in industrial purification and refining operations.
Calcium Hydroxide (Food Grade)
Industrial Applications of Calcium Hydroxide
Calcium hydroxide is used across many industries due to its chemical versatility.
1. Metallurgy and Metal Refining
In metal processing industries, calcium hydroxide is used to remove impurities and improve the quality of metals.
2. Chemical Manufacturing
It acts as a chemical intermediate for producing various compounds such as:
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Citrates
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Nitrates
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Silicates
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Acetates
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Sulphates
3. Water and Wastewater Treatment
Calcium hydroxide is widely used for:
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Neutralizing acidic wastewater
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Removing heavy metals
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Treating industrial effluents
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Sludge stabilization
4. Oil and Chemical Refining
In refining processes, hydrated lime helps remove sulfur compounds and impurities from raw materials.
5. Environmental Applications
It is also used in:
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Flue gas treatment
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Hazardous waste treatment
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Bio-solids stabilization
Packaging and Storage
Industrial calcium hydroxide is supplied in secure packaging to maintain quality.
Packaging Options
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25 kg bags
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40 kg bags
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Laminated HDPE bags
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Jumbo bags
Storage Conditions
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Store in a dry and ventilated covered area
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Protect from moisture and humidity
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Keep packaging tightly sealed
Proper storage ensures product stability and long shelf life.
Features of Industrial Calcium Hydroxide
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High purity (94%+)
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Fine free-flowing powder
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Strong alkaline properties
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High chemical stability
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Suitable for multiple industrial applications
Hydrated Lime in Construction
Frequently Asked Questions (FAQs)
What is calcium hydroxide used for in refining?
It is used to remove impurities, neutralize acidic substances, and improve refining efficiency.
Is hydrated lime the same as calcium hydroxide?
Yes. Hydrated lime, slaked lime, and calcium hydroxide all refer to the same chemical compound Ca(OH)₂.
What industries use calcium hydroxide?
Industries including metallurgy, chemical manufacturing, wastewater treatment, construction, and refining use calcium hydroxide.
How should calcium hydroxide be stored?
It should be stored in a dry, ventilated area away from moisture.
Industrial Calcium Hydroxide Manufacturer in India
Vigyan Lime is a trusted manufacturer and supplier of high-quality calcium hydroxide for refining and industrial applications.
Manufacturing Units
Jodhpur & Nagaur (Rajasthan)
Udaipur (Rajasthan)
Haldwani (Uttarakhand)
Sataun (Himachal Pradesh)
