Dolomite Ball is the granulated form of dolomite mineral (CaMg(CO₃)₂), produced at our Bhavnagar facility in full white and off-white grades. Unlike bentonite which swells and absorbs, dolomite's primary value is chemical: it supplies calcium and magnesium to soil (raising acidic pH from 5.0–5.5 toward the optimal 6.0–7.0 range), provides CaO and MgO to glass batch formulations (28–32% CaO, 18–22% MgO), and serves as a fluxing mineral in ceramic tile bodies.
The Bhavnagar region is better known for bentonite than dolomite — Gujarat's primary dolomite deposits are in the Saurashtra and Kutch regions. We source dolomite from approved mines within Gujarat, process it at our Thordi facility (crushing → granulation → screening → packing), and ship across India. Our value-add is processing quality: consistent granule sizing, controlled moisture, and verified CaO/MgO chemistry for each lot.
For agriculture buyers, Dolomite Ball is an economical alternative to agricultural lime (calcite) because it supplies both calcium and magnesium in a single application — important for crops like groundnut, cotton, and pulses that are sensitive to magnesium deficiency.
Technical Specifications
Factory-Direct Pricing
15–30% lower than marketplace rates. No middlemen.
Full White vs Off-White — Choosing the Right Dolomite Grade
Full white dolomite (whiteness above 90%) is used in glass manufacturing, ceramic glazes, wall putty, and premium paint fillers where colour is a critical quality parameter. Off-white dolomite (whiteness 70–85%) is used in agriculture (soil pH correction), construction, and industrial filler applications where colour is secondary to chemical composition.
The price difference between full white and off-white is significant — typically ₹1,500–2,500 per MT — because full white requires selective mining from deposits with naturally low iron content. Iron (Fe₂O₃) is the primary colour contaminant in dolomite; full white grade typically has Fe₂O₃ below 0.2%, while off-white may have 0.3–0.8%. For a glass manufacturer, that 0.5% iron difference can be the difference between clear container glass and green-tinted glass.
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View full categoryFrequently Asked Questions
How much Dolomite Ball should I apply per acre for soil pH correction?
Application rate depends on current soil pH and target pH. As a general guide: 500–750 kg/acre for mildly acidic soils (pH 5.0–5.5), 750–1000 kg/acre for moderately acidic soils (pH 4.5–5.0). A soil test before application is strongly recommended — over-application can raise pH above 7.5, reducing micronutrient availability.
What is the CaO and MgO content of your dolomite?
Standard specification: CaO 28–32%, MgO 18–22%. Actual values are lot-dependent based on the source mine. Each shipment includes a certificate of analysis with the lot-specific CaO and MgO values. If you need a guaranteed minimum CaO or MgO, specify this during enquiry and we will confirm whether current stock meets your requirement.