Bulk Dolomite Powder Supplier & Exporter India

Pratibha Refractory Minerals mines, processes, and exports high-whiteness Dolomite Powder directly from our own quarrying and grinding facilities in Udaipur, Rajasthan India’s premier belt for industrial minerals. Every batch is manufactured to a tight CaO-to-MgO ratio, delivers a whiteness index of 92–96%, and ships with a Certificate of Analysis (COA), giving procurement teams the consistency they need for steel fluxing, glass batching, wall putty formulation, and soil conditioning at scale.

As a direct manufacturer not a trading intermediary we control the full value chain from mine to mesh, which means shorter lead times, transparent FOB/CIF pricing, and zero supply chain disruption for our global import partners.

→ Request Bulk Export Quote   |   → Download Technical Data Sheet (TDS)

Technical Specifications & Chemical Composition

Our Dolomite Powder is a naturally occurring Calcium Magnesium Carbonate mineral, calibrated to consistent chemical and physical parameters batch after batch. The table below reflects the standard specification sheet issued with every shipment.

Parameter	Specification
Chemical Formula	CaMg(CO₃)₂ (Calcium Magnesium Carbonate)
CaO Range	30% – 32%
MgO Range	20% – 22%
SiO₂ / Fe₂O₃ (Impurity Limits)	< 0.5% combined – low Loss on Ignition (LOI) variance
Whiteness Index (Y-Value)	92% – 96%
Available Mesh Sizes	100 Mesh, 325 Mesh, 500 Mesh, 1250 Mesh (Micronized)
Physical State	Fine, free-flowing dry white powder
Moisture Content	< 0.3% (kiln-dried, moisture-controlled storage)
Bulk Density	≈ 1.4 – 1.6 g/cm³ (mesh-dependent)

Need a custom specification outside this range? Our lab can adjust grinding parameters and screening cycles to meet buyer-specific CaO/MgO ratios or whiteness targets share your target TDS and our technical desk will confirm feasibility within 24 hours.

Industry-Specific Applications

Dolomite Powder performs a different technical role in every industry it enters. Below is how Pratibha’s product specifications map to each vertical’s process requirements.

Steel & Metallurgical Furnaces

• Sintering & Fluxing: acts as a fluxing agent in the sintering process, lowering the melting point of the charge mix and improving slag fluidity.
• Slag Conditioning: adjusts slag basicity and MgO saturation, extending refractory lining life by reducing chemical attack on furnace walls.
• Refractory Lining Protection: high-MgO content helps maintain a stable slag chemistry that protects magnesia-based linings from erosion.

Wall Putty, Paints & Construction Chemicals

• Brightness & Extender Role: high whiteness index (92–96%) allows dolomite powder to function as a cost-effective extender without compromising finish brightness.
• Crack Resistance: improves dimensional stability and reduces surface cracking in cured wall putty films.
• Cost-in-Use Reduction: replaces a portion of higher-cost calcium carbonate or titanium dioxide loading while maintaining application smoothness.

Sheet & Container Glass Manufacturing

• MgO / CaO Source: supplies both CaO and MgO in a single mineral input, simplifying batch formulation for float and container glass lines.
• Melting Temperature Reduction: lowers the batch melting point, reducing furnace energy consumption per tonne of glass melted.
• Chemical Durability: improves resistance to weathering and chemical attack in the finished glass product.

Ceramics & Sanitaryware

• Glaze Formulation: used as a flux in glaze recipes to control gloss, opacity, and surface texture.
• Thermal Expansion Control: helps match the thermal expansion coefficient of glaze to body, reducing crazing defects.

Agriculture & Soil Conditioning

• Soil pH Correction: neutralizes acidic soils more gradually than pure limestone, reducing over-liming risk.
• Calcium & Magnesium Supplementation: corrects Mg-deficient soils where standard agricultural lime falls short.

Soaps, Detergents & Polymers

• Bulk Filler: provides a high-density, low-cost inert filler for soap bars, detergent powders, and polymer compounding.

Manufacturing Excellence & Quality Assurance

Our processing facility is located in Udaipur, Rajasthan the heart of India’s industrial minerals belt giving us direct access to consistent-grade dolomite reserves without dependence on third-party ore aggregators.

Quality Control Process

• XRF Chemical Analysis every production lot is tested for CaO, MgO, SiO₂, and Fe₂O₃ content using X-ray fluorescence.
• Particle Size Distribution (PSD) verified via laser diffraction to guarantee consistent mesh sizing from 100 to 1250 mesh.
• Whiteness Testing Y-value measured on a whiteness meter to confirm the 92–96% index on every batch.
• Loss on Ignition (LOI) Testing monitored to control impurity carryover for high-purity applications.

Compliance & Documentation

• ISO-aligned quality management processes across mining, grinding, and packaging.
• Certificate of Analysis (COA) issued with every FCL shipment.
• Pre-shipment sample approval available for first-time importers.

Bulk Export, Packaging & Supply Chain Logistics

We package Dolomite Powder to match order scale from trial retail bags to full container jumbo bag loads.

Packaging Format	Configuration	Best Suited For
25 kg HDPE Bags	Palletized / Shrink-wrapped	Retail & small-batch trade orders
50 kg HDPE Bags	Palletized, 1 MT per pallet	Domestic bulk & regional distribution
1.0 – 1.25 MT Jumbo (FIBC) Bags	PP woven with liner, moisture-proof	Export FCL container loading

Container Loading & Port Access

• Container Loading Capacity: 24 to 28 MT per 20ft FCL container (mesh and packaging dependent).
• Port Proximity: Direct road access to Mundra and Kandla ports on India’s western coast, keeping inland freight costs low.
• Export Reach: Regular shipments to the Middle East/Gulf, Europe, Africa, and Asia-Pacific import markets.

→ Get FOB/CIF Container Pricing for Your Destination Port

Why Choose Pratibha Refractory Minerals as Your Dolomite Partner?

• Direct Manufacturer Pricing no trading-house markup, full transparency on FOB/CIF quotes.
• Zero Supply Chain Disruption owned processing capacity means we are not dependent on third-party grinding units.
• Custom Mesh Grinding 100 to 1250 mesh (micronized) available on request, including buyer-specific PSD curves.
• Batch-to-Batch Consistency XRF and whiteness testing on every lot, with COA issued per shipment.
• Export-Ready Documentation experienced with international trading house paperwork, LC terms, and pre-shipment inspection requirements.

Frequently Asked Questions

1. What is the standard chemical ratio of CaO to MgO in your dolomite powder?

Our standard Dolomite Powder carries a CaO range of 30–32% and an MgO range of 20–22%, consistent with natural calcium magnesium carbonate stoichiometry. Every shipment’s COA confirms the exact ratio for that production lot.

2. What is the minimum order quantity (MOQ) for international bulk shipping?

For export orders, our standard MOQ is one 20ft FCL container (approximately 24–28 MT). Smaller trial quantities in 25 kg or 50 kg bags can be arranged for sample evaluation ahead of a full container commitment.

3. How does dolomite powder improve the quality of wall putty and paint formulations?

Its high whiteness index (92–96%) allows it to function as a brightness-neutral extender, reducing formulation cost while maintaining film smoothness, application workability, and crack resistance in cured putty and paint films.

4. Can you supply customized particle size distributions (mesh size)?

Yes. Beyond our standard 100, 325, 500, and 1250 mesh (micronized) offerings, our grinding lines can be calibrated to buyer-specific PSD targets share your required curve and our technical team will confirm feasibility and lead time.

5. Do you provide Certificate of Analysis (COA) and free lab samples?

Every shipment ships with a Certificate of Analysis covering CaO, MgO, whiteness index, and impurity limits. Pre-shipment lab samples (2–5 kg) are available on request for first-time importers to validate specification before placing a bulk order.

6. Which industries buy the most dolomite powder from Pratibha Refractory Minerals?

Our largest order volumes come from steel and metallurgical furnace operators, wall putty and paint manufacturers, glass batch producers, and agricultural input distributors though ceramics, detergent, and polymer compounders are a growing share of our export book.

Ready to Secure Your Dolomite Powder Supply?

Whether you need a trial sample bag for lab evaluation or a full FCL container on FOB/CIF terms, our export desk responds with pricing and lead-time confirmation within one business day. Consistent whiteness, verified CaO/MgO ratios, and COA-backed quality delivered from mine to port without a trading-house markup.

→ Request a 2–5 kg Sample Bag   |   → Ask for FOB/CIF Container Price Quote   |   → WhatsApp / Email the Export Desk