Hydrated Lime Powder

Quick facts:

How Is Hydrated Lime Powder Made?

Hydrated lime powder is produced by reacting quicklime with a controlled amount of water:

CaO + H₂O → Ca(OH)₂ + Heat

The reaction is exothermic, and precisely controlling the water ratio determines the final product. Too little water leaves unreacted lime, while too much produces a wet, lumpy output instead of the fine, dry, free-flowing powder that buyers expect. Well-made hydrated lime powder has a uniform particle size, which directly affects how quickly and evenly it reacts once it's put to use.

Key Properties of Hydrated Lime Powder

• Appearance: Fine, white, dry powder
• Chemical formula: Ca(OH)₂
• Purity: Higher calcium hydroxide content generally means better, more predictable performance in industrial applications
• pH level: Strongly alkaline — well suited to pH control and acid neutralization
• Reactivity: Fine, consistent particle size supports faster, more even reaction compared to coarser or lump forms

Applications of Hydrated Lime Powder

1. Construction

Hydrated lime powder is used as a binder in mortars and plasters, improving the workability and long-term durability of construction materials. It's also used as a stabilizing agent for soil in road construction projects, helping improve the load-bearing strength of the subgrade.

2. Water Treatment

In water and wastewater treatment, hydrated lime powder neutralizes acidity, helps remove impurities, including heavy metals, and reduces water hardness by precipitating hardness-causing minerals out of solution.

3. Agriculture

Applied to soil, hydrated lime powder reduces acidity and raises pH, promoting better crop growth and improving the soil's nutrient absorption capacity. It's also used as a disinfectant in livestock sheds and farm facilities.

4. Chemical Manufacturing

Hydrated lime powder is a raw material in the manufacturing of bleaching powder and other calcium-based chemicals, and is essential in the production of precipitated calcium carbonate (PCC), used across the plastics, paper, and paint industries.

5. Steel & Metallurgical Industry

In steel manufacturing, hydrated lime powder acts as a fluxing agent, helping remove impurities such as sulfur and phosphorus from molten metal during refining.

Hydrated Lime Powder Grades — Matched to Application

Not every application needs the same purity or packaging. In practice, hydrated lime powder is commonly sold and priced across three broad application-based bands:

Matching your application to the right grade category avoids paying industrial-grade pricing for a use case that doesn't need it — and avoids under-specifying for an application (like water treatment) that genuinely benefits from higher, more consistent purity.

Hydrated Lime Powder Price in India

Pricing varies based on purity, grade category, and packaging size. As a general guide:

(These are indicative market ranges; actual pricing depends on order volume, purity specification, and current market conditions. Contact us for a current quote.)

Hydrated Lime Powder vs. Wet Forms (Milk of Lime, Lime Putty)

A common point of confusion: Is hydrated lime powder the same as milk of lime or lime putty? Chemically, yes — all are calcium hydroxide. The difference is physical form and use case:

If you're specifically interested in these wet/traditional forms, see our Slaked Lime page for more details.

Why Hydrated Lime Powder Is a Crucial Industrial Material

Hydrated lime powder's versatility comes down to one core property: its ability to reliably neutralize acidity and raise pH across very different contexts — water chemistry, soil chemistry, and metallurgical chemistry alike. That's why it shows up across such a wide range of unrelated-seeming industries, from water utilities to steelmakers to farmers, all relying on the same fundamental alkaline reaction for different outcomes.

Handling & Storage

• Store in a cool, dry environment away from moisture — hydrated lime powder is hygroscopic and will absorb moisture from the air over time, reducing reactivity
• Use moisture-resistant packaging for transit and storage
• Wear gloves, eye protection, and a dust mask when handling
• In case of skin or eye contact, rinse thoroughly with water and seek medical attention if irritation persists

Common Questions Before Buying Hydrated Lime Powder

1. Which grade do I actually need? Match your application (industrial, agricultural, or construction) to the grade table above rather than defaulting to the highest purity available.
2. How much will I need, and in what packaging? Bulk/metric-ton orders suit continuous industrial use; 25–50 kg bags suit smaller agricultural or construction jobs.
3. How should I store it once delivered? Moisture is the main enemy — dry, sealed storage preserves reactivity and shelf life.
4. Is a sample worth requesting? Yes, especially for a new supplier relationship — confirming purity and consistency before a bulk order is standard practice.

Sourcing Hydrated Lime Powder from Shivi Minerals

Shivi Minerals is a trusted manufacturer and supplier of hydrated lime powder, based in Jodhpur, Rajasthan, serving construction, water treatment, agriculture, steel, and chemical manufacturing industries across India.

Why buyers choose us:

• Strict quality control for consistent purity and composition across batches
• Advanced manufacturing techniques for uniform particle size and high reactivity
• Customized solutions — grade and packaging tailored to your specific industry requirements
• Moisture-resistant packaging, available in bulk and smaller bag sizes, depending on order volume
• Reliable logistics network for on-time delivery across India

For full technical grade specifications (70–94% Ca(OH)₂ purity table, mesh sizing) and manufacturing capacity details, see our Hydrated Lime page.

Get a quote or request a sample: Contact us with your required grade, packaging, and volume.