DOLOMITE
Dolomite is a natural sedimentary carbonate mineral made of:
Calcium Carbonate (CaCO₃)
Magnesium Carbonate (MgCO₃)
It is harder, denser, and more chemically stable than normal limestone — which makes it suitable for several industrial applications.
- Bhavnagar Dolomite is a high-quality calcium–magnesium carbonate mineral sourced from the coastal mineral belts of Bhavnagar, Gujarat.
- Known for its balanced CaO–MgO ratio, low silica, high brightness, and easy grindability
It is harder, denser, and more chemically stable than normal limestone — which makes it suitable for several industrial applications.
Primary Uses
1) Steel & Metallurgy
Flux agent
Slag formation
Impurity removal
Used in blast furnaces, SMS, and sponge iron plants
2) Refractory Industry
Dolomite bricks
Converter lining
High-temperature resistance
3) Ceramic & Tiles
Improves whiteness
Enhances tile strength
Improves thermal properties
4) Agriculture
Soil pH balancing
Magnesium enrichment
Organic farming
Fertilizer blending
5) Construction
Aggregates
Road base (GSB/WMM)
Cement applications
RMC plants
6) Chemical & Industrial Use
- Magnesium extraction
- Water treatment
- Glass industry
Typical chemical range:
Component Percentage CaO 28% – 32% MgO 18% – 22% SiO₂ 1% – 4% Fe₂O₃ 0.3% – 1% Al₂O₃ 0.5% – 1.5% LOI 42% – 45% PHYSICAL PROPERTIES:
Brightness 70–80%+ (very white) Hardness 3.5–4 Mohs Specific gravity 2.8–2.9 Bulk density 1500–1700 kg/m³ Moisture <1% (after drying) Very stable structure (heat + chemical resistance)