Dolomite powder for glass and ceramics must meet exacting standards for whiteness, iron content, and particle consistency — parameters that directly affect melt quality in glass furnaces and fired appearance in ceramic products. Radhe Enterprise supplies industrial-grade dolomite powder engineered for these requirements from our Bhavnagar, Gujarat facility, serving glass batch houses, ceramic tile manufacturers, sanitaryware producers, and glaze formulators across India and export markets.
Our standard glass-and-ceramic grade delivers 90%+ whiteness, Fe2O3 below 0.1%, SiO2 below 3%, and a tight 200–300 mesh distribution. Every lot is tested for these parameters before release, and the certificate of analysis travels with each consignment so plant QC teams have documented assurance that incoming material matches the specification. Custom mesh ranges and tighter chemistry windows (Fe2O3 below 0.05% for ultra-clear glass) are available on confirmed specification.
For production managers at container glass plants, sheet glass lines, ceramic tile factories in the Morbi cluster, and sanitaryware manufacturers, our factory-direct model delivers consistent supply, competitive bulk pricing, and logistics planned around just-in-time plant requirements.
Technical Specifications
Factory-Direct Pricing
15–30% lower than marketplace rates. No middlemen.
Critical Parameters for Glass and Ceramic Production
In glass manufacture, dolomite powder supplies CaO and MgO as essential flux components that control melt viscosity, working temperature range, and the chemical durability of the finished glass. The CaO/MgO ratio influences thermal expansion and resistance to chemical attack — parameters that matter for container glass that must withstand filling-line pressure and for sheet glass that undergoes thermal tempering. Iron content is the critical contaminant: Fe2O3 above threshold levels produces green tint in otherwise clear glass, forcing colour correction or limiting the glass to amber applications.
In ceramic body formulations, dolomite powder lowers the vitrification temperature, reducing energy consumption during firing while improving densification and reducing porosity. For white-body tiles and sanitaryware, whiteness retention and iron control are equally important because iron oxides cause speckling and discolouration that lowers the commercial grade of fired pieces. Mesh distribution affects how uniformly the powder disperses in the body slip or dry-press formulation.
Application Areas by Production Type
Container glass (bottles, jars): Dolomite powder is charged at 8–15% of the batch formulation to supply CaO and MgO. Our low-Fe2O3 grade is specified for flint (clear) glass where colour neutrality is essential. Each shipment carries lot-specific Fe2O3 and mesh data for batch-house QC verification.
Sheet and float glass: Flat glass production demands tight chemistry control. Dolomite contributes to the viscosity profile that determines draw speed and thickness uniformity. Low silica and iron content help maintain the optical clarity required for architectural and automotive glass grades.
Ceramic floor and wall tiles: In the Morbi ceramic belt, dolomite powder is used as a flux in porcelain and vitrified tile bodies, contributing to fired strength and moisture resistance. Whiteness consistency supports shade uniformity across production runs.
Sanitaryware and white-body ceramics: High whiteness and iron control protect the fired appearance of washbasins, toilet bowls, and bidets, where surface quality determines the commercial grade. Dolomite also improves casting slip rheology in sanitaryware production.
Glaze and frit manufacture: Selected fine-mesh dolomite grades are used in glaze formulations to modify melt flow and surface finish characteristics.
Quality Assurance for Glass and Ceramic Supply Chains
Our quality protocol for glass-and-ceramic grade dolomite includes whiteness measurement on a calibrated brightness tester, XRF or wet-chemical analysis for CaO, MgO, SiO2, Fe2O3, and loss on ignition, moisture determination by hot-air oven method, and sieve analysis for mesh distribution. Each lot is assigned a unique batch number, and the certificate of analysis records all measured values. For buyers who require incoming material inspection at our plant before dispatch, we facilitate sample collection and third-party lab testing on request.
Packaging, Logistics and Supply to Ceramic Clusters
Dolomite powder is supplied in 25 kg and 50 kg laminated PP bags with moisture barriers, and in 1 MT jumbo bags for pneumatic or mechanical unloading at plant silos. For the Morbi ceramic cluster, we operate dedicated truck dispatch to maintain short lead times. Export shipments are containerized from Mundra, Kandla, or Pipavav with palletization and shrink-wrapping. Documentation includes commercial invoice, packing list, Certificate of Origin, and per-lot certificate of analysis. We support FOB, CIF, and CFR terms.
Why Glass and Ceramic Producers Choose Radhe Enterprise
Our Bhavnagar location is logistically efficient for both the Gujarat ceramic belt and Gujarat-port export, reducing inland freight cost and delivery lead time. We work directly with plant QC and batch formulation teams to maintain the chemistry and mesh parameters that each production line depends on. Long-term supply agreements include scheduled deliveries, locked pricing for committed volumes, and quality KPIs that support the buyer's own supplier audit requirements.
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View full categoryFrequently Asked Questions
What whiteness and iron levels do glass and ceramic plants typically require?
Most container glass and white-body ceramic plants target 90% whiteness or higher with Fe2O3 below 0.1%. Ultra-clear glass manufacturers and premium tile producers may require Fe2O3 below 0.05% and whiteness above 93%. Our standard glass-and-ceramic grade meets the 90% whiteness / 0.1% Fe2O3 threshold, and we produce upgraded grades on specification. The certificate of analysis confirms the values for each lot, giving plant QC documented assurance.
Can you adjust mesh distribution to match our batch dosing equipment?
Yes. Our standard mesh for glass and ceramics is 200–300 mesh, which suits most batch houses and ceramic body preparation systems. If your dosing equipment or formulation requires a different distribution — for example, 100–200 mesh for specific glass formulations or 325 mesh for fine-glaze applications — we can adjust mill classification settings on confirmation of specification and minimum volume commitment.
Do you supply dolomite powder to the Morbi ceramic cluster?
Yes, absolutely. The Morbi tile belt is a key supply region for our ceramic-grade dolomite powder. Our Bhavnagar facility is located approximately 200 km from Morbi, which allows us to offer competitive delivered pricing and short lead times via dedicated truck transport. We supply to both tile body producers and glaze manufacturers in the cluster with consistent quality and batch documentation.
How is per-lot quality documented for export shipments?
Every export lot ships with a comprehensive certificate of analysis that records: whiteness (ISO brightness), CaO percentage, MgO percentage, SiO2 percentage, Fe2O3 percentage, moisture content, sieve analysis (mesh distribution), and loss on ignition. Alongside the COA, we provide a Certificate of Origin (Chamber-attested), commercial invoice, packing list, and any destination-specific documentation such as phytosanitary certificates or GSP certificates. Documentation satisfies both plant QC verification and import customs clearance requirements.
What role does the MgO component from dolomite play in glass batch formulations?
Magnesium oxide (MgO) from dolomite powder serves several critical functions in glass manufacturing. It reduces the melting temperature of the batch, lowering energy consumption in the furnace. It modifies the viscosity-temperature curve of the molten glass, affecting forming characteristics in container glass and sheet glass production. MgO also improves the chemical durability of the finished glass — enhancing resistance to water attack in container glass and weathering resistance in architectural glass. The typical MgO contribution from dolomite in a soda-lime glass batch ranges from 3–5% by weight of the final glass composition.
How does dolomite powder particle size affect ceramic body performance during firing?
Particle size of dolomite powder directly influences distribution uniformity in ceramic body formulations and its fluxing behaviour during firing. Finer mesh (300 mesh or finer) disperses more uniformly in the body slip, ensuring consistent flux distribution and predictable shrinkage during drying and firing. Coarser particles can create localized flux concentrations that cause uneven vitrification, differential shrinkage, and surface defects. For glaze formulations, fine mesh (300 mesh minimum, with low residue on 325 mesh) is essential to prevent surface defects like pinholes, blistering, and rough texture after firing.