Calcined Dolomite

Global Calcined Dolomite Exporter & Supplier of High-Reactivity Calcined Dolomite

We are a leading exporter and supplier of premium-grade calcined dolomite, delivering consistent, high-reactivity material to steel plants, refractory manufacturers, glass producers, and chemical industries worldwide.

With access to high-purity dolomite reserves, modern calcination kilns, and a robust global logistics network, we ensure reliable supply, tight specifications, and on-time delivery. Our calcined dolomite meets international standards, making us a dependable partner in high-temperature and metallurgical applications.

What is Calcined Dolomite? Thermally Activated Dolomite

Calcined dolomite is produced by heating natural dolomite (CaMg(CO₃)₂) at elevated temperatures (typically 900°C–1200°C), causing thermal decomposition:

• CaMg(CO₃)₂ → CaO + MgO + CO₂↑

The result is a highly reactive blend of calcium oxide (CaO) and magnesium oxide (MgO) with enhanced basicity and fluxing ability.

Key Physical & Chemical Properties

• High Reactivity (LCD grades)
• High Basicity (alkaline behavior)
• Rich in CaO and MgO
• Low LOI after calcination
• Excellent fluxing capacity
• Thermal stability at high temperatures
• Low silica and iron impurities

These traits make calcined dolomite essential where chemistry and heat intersect.

Grades of Calcined Dolomite We Export

1. Lightly Calcined Dolomite (LCD)

Partially calcined for controlled reactivity.

Typical Specs:

• CaO: 30–40%
• MgO: 15–25%
• High reactivity index

Applications:

• Steelmaking flux
• Water and environmental treatment
• Agriculture (soil conditioning)

2. Dead Burnt Dolomite (DBD)

Calcined at very high temperatures for density and stability.

Key Features:

• Low reactivity
• High bulk density
• Superior slag resistance

Applications:

• Basic refractory bricks
• Furnace linings (BOF, EAF, ladles)

3. Sintered Dolomite

Densified at extreme temperatures for premium refractory use.

Applications:

• Steel converters
• High-end refractory mixes

4. Calcined Dolomite Powder

Finely ground for precise dosing.

Mesh Options:

• 100 / 200 / 325 mesh (customizable)

Applications:

• Injection systems in steel plants
• Chemical processing

Chemical Composition & Technical Specifications

• Calcium Oxide (CaO): 30% – 40%
• Magnesium Oxide (MgO): 15% – 25%
• Silica (SiO₂): < 2% – 5%
• Iron Oxide (Fe₂O₃): Low
• Loss on Ignition (LOI): Minimal
• Moisture: < 1%
• Reactivity (LCD): High and controlled

Every batch is laboratory-tested for consistency and performance.

Production Process: From Quarry to Kiln

1. Raw Material Selection

High-purity dolomite chosen for optimal CaO/MgO balance.

2. Crushing & Sizing

Prepared for uniform kiln feed.

3. Calcination

Processed in rotary/vertical kilns at controlled temperatures.

4. Controlled Cooling

Preserves structure and reactivity.

5. Secondary Crushing / Grinding

Sized to lumps or powders.

6. Quality Assurance

Chemical analysis, reactivity tests, size grading.

7. Packaging & Export

Prepared with full export documentation.

Industrial Applications of Calcined Dolomite

Steel Industry (Primary Use)

Acts as a flux to:

• Remove sulfur and phosphorus
• Improve slag chemistry
• Protect refractory linings

Refractory Industry

Used in:

• Basic bricks
• Furnace linings
• High-temperature insulation systems

Glass Manufacturing

Provides MgO and CaO to enhance:

• Strength
• Chemical durability

Chemical Industry

Used in:

• Magnesium and calcium compounds
• pH control systems

Agriculture

Supplies calcium and magnesium for soil balance.

Environmental Applications

Used in:

• Water treatment
• Flue gas desulfurization
• Waste neutralization

Global Market Trends & Demand

Major Importing Regions

• China
• Middle East (UAE, Saudi Arabia)
• Europe (Germany, Italy)
• Southeast Asia

Market Drivers

• Rising global steel production
• Expansion of refractory consumption
• Growth in environmental treatment systems
• Increasing demand for flux materials

Why Choose Us as Your Calcined Dolomite Export Partner?

Optimized Reactivity

Controlled calcination for precise industrial performance.

Consistent Chemistry

Stable CaO/MgO ratios across shipments.

Modern Kiln Technology

Uniform burn, reduced variability.

Reliable Supply Chain

Steady sourcing and scalable volumes.

Custom Specifications

Tailored sizes, grades, and packaging.

Export Expertise

Efficient documentation and global logistics.

Competitive Pricing

Value-driven supply for bulk buyers.

Packaging, Shipping & Export

• 25 kg / 50 kg HDPE bags
• 1 MT Jumbo Bags
• Bulk vessel shipments
• Containerized cargo (20’ / 40’)

Ports: Major Indian ports
Delivery: Worldwide with end-to-end coordination

Sustainability & Process Efficiency

We focus on:

• Energy-efficient kilns
• Emission control systems
• Responsible quarrying practices

Balancing performance with environmental responsibility.

Contact Us for Bulk Calcined Dolomite Supply

Looking for a reliable calcined dolomite exporter with consistent quality and global delivery? We’re ready to support your operations with precision-grade material and dependable supply.

Contact us today for technical datasheets, samples, and bulk pricing.

Technical Specifications:

Chemical Formula: CaO·MgO (Calcined/Dead Burned), Ca(OH)₂·Mg(OH)₂ (Hydrated)

Chemical Composition Guaranteed Specification
CaO	28-32%
MgO	18-22%
CaO:MgO Ratio	1.4:1 to 1.8:1
SiO₂	2.00% max
Al₂O₃	1.00% max
Fe₂O₃	0.50% max
LOI	<2% (Calcined)

Physical Composition
Size	0-5 mm (DBM), 10-50 mm (CCM)
Mesh	200, 325 mesh (Powder)
Bulk Density	3.2-3.4 g/cm³
Reactivity	High (CCM), Low (DBM)