Bentonite Powder Manufacturer in India — 200 Mesh, 300 Mesh, Ceramic, Foundry & Drilling Grade at Factory Price

Bentonite powder price in India typically ranges from ₹4,500 to ₹9,500 per metric ton depending on mesh size (200 vs 300 mesh), grade (ceramic, foundry, drilling, or industrial), moisture specification, packing format, and order volume. Premium grades like API-grade drilling bentonite and low-iron ceramic-grade powder command the higher end of this range due to tighter processing controls and additional quality testing.

At Radhe Enterprise, our factory-direct bentonite powder pricing is 15–30% below marketplace and trader rates because you are buying from the manufacturer — no middlemen, no IndiaMART commissions, no trader markup. Our Bhavnagar facility's proximity to raw bentonite mines (within 50 km) and in-house milling and classification equipment eliminate the cost layers that traders add. Share your target mesh, application, monthly volume, and delivery location — we provide a transparent landed-cost quote within 24 hours.

Bulk buyers (10+ MT/month) on annual contracts receive preferential pricing tiers with fixed quarterly rates for budget certainty. For buyers comparing bentonite powder price per ton across IndiaMART, TradeIndia, or ExporterIndia, note that marketplace prices often include hidden handling fees and may not reflect current mill-gate rates from the manufacturer.

200 mesh bentonite powder is the workhorse grade for foundry green sand bonding, civil construction piling slurry, water well drilling, and general industrial applications. At 200 mesh (approximately 74 microns), the powder provides rapid hydration and dispersion when mixed with water, developing viscosity within 5–10 minutes of mixing — critical for drilling and piling operations where mud preparation time directly affects project productivity.

Our 200 mesh bentonite powder is tested for sieve retention (minimum 95% passing 200 mesh), moisture content (8–12%), swell index (10–20 ml/2g), and Marsh funnel viscosity at 6% concentration. Foundry buyers receive additional data on green compression strength and wet tensile strength for sand system compatibility. Construction buyers receive fluid loss and filter cake thickness data for slurry trench and diaphragm wall design.

Standard packing: 25 kg or 50 kg laminated PP bags with inner moisture barrier liner. Jumbo bags (1–1.5 MT) available for bulk silo-fed operations. Pan-India dispatch within 24–48 hours for standard grades from our Bhavnagar factory.

300 mesh bentonite powder (approximately 44 microns) is specified where finer particle size and smoother dispersion are critical — ceramic body and glaze formulations, paint and coating fillers, cosmetic clay blends, and high-performance drilling fluids requiring low sand content. The finer grind ensures uniform distribution in ceramic bodies (preventing glaze defects from coarse particles) and smooth rheology in paint and coating systems.

Our 300 mesh calcium bentonite powder undergoes additional air classification beyond standard milling to achieve tight particle size distribution with minimum 95% passing 300 mesh. Iron content (Fe₂O₃) is monitored for ceramic and paint applications where colour consistency matters. For buyers requiring micronized bentonite powder (sub-300 mesh or custom fine grades), we offer additional grinding and classification on request.

Ceramic-grade 300 mesh specifications include controlled iron content, consistent particle distribution for predictable shrinkage, and low residue on 325 mesh for glaze smoothness. Paint-grade specifications emphasize whiteness, low oil absorption, and dispersion characteristics compatible with high-speed dispersers used in paint manufacturing.

Ceramic manufacturers across Morbi (India's largest ceramic cluster), Ahmedabad, and export markets use our bentonite powder in tile body formulations (improving green strength and plasticity), glaze suspensions (preventing hard settling), and engobe coatings (providing uniform application). The key quality parameters for ceramic grade are consistent mesh retention (300 mesh standard), controlled iron oxide content (to avoid colour shift during firing), and predictable rheology in slip formulations.

Unlike commodity bentonite that may contain silica sand, organic debris, or colour-impairing minerals, our ceramic-grade powder is processed from select light-colour bentonite deposits with low iron content. Each lot is tested for residue on 325 mesh (target below 2%), fired colour (visual comparison against reference standard), and dispersion behaviour in typical ceramic slip formulations. We support ceramic manufacturers with pre-shipment samples for plant trials before bulk orders.

Foundry-grade bentonite powder from Radhe Enterprise provides the bonding strength and thermal stability that green sand molding systems demand. Our foundry bentonite is used in iron, steel, and non-ferrous foundries across India — from automotive casting suppliers in Pune and Chennai to pump and engineering casting units in Coimbatore and Rajkot.

Key foundry bentonite specifications we test and report: green compression strength (standard AFS sand test), wet tensile strength, compactability, moisture content (8–12% for consistent sand system performance), and methylene blue index (montmorillonite content indicator). Our Black Ball-grade bentonite powder provides higher swell index (15–25 ml/2g) for foundries requiring stronger mold bonding, while standard calcium bentonite powder serves general-purpose green sand systems.

For foundries switching from trader-supplied bentonite, we offer trial lots with complete sand lab testing data so your sand system engineer can validate compatibility before transitioning to regular supply. Batch-to-batch consistency is maintained through retained samples and documented milling parameters — critical for foundries running IATF 16949 or ISO 9001 quality systems.

Drilling operations — from oil and gas exploration to water well construction and horizontal directional drilling (HDD) — depend on bentonite powder for borehole stability, cutting suspension, fluid-loss control, and lubrication. Our drilling-grade bentonite powder is manufactured to meet API 13A Section 4 specifications where required, with testing for yield point, plastic viscosity, fluid loss (API filter press at 100 psi), and sand content.

For oil well drilling applications, we supply calcium bentonite powder tested for rheological properties at standard concentrations (6% w/w in fresh water). For water well drilling and HDD applications, our standard 200 mesh powder provides rapid hydration and adequate viscosity for borehole cleaning and stability in most soil conditions. For geothermal drilling and deeper wells requiring higher temperature stability, we can formulate with selected high-swelling bentonite grades.

Drilling bentonite is packed in 25 kg or 50 kg moisture-barrier bags for site delivery, or jumbo bags for bulk silo systems at drilling rig locations. Export consignments to UAE, Saudi Arabia, Kenya, and other drilling-active markets include batch-specific API-style test data and moisture-barrier container packing for tropical maritime transit.

Civil construction projects across India — from metro rail piling in Mumbai and Delhi to dam construction and diaphragm walls — consume significant volumes of bentonite powder for slurry support, waterproofing, and soil stabilization. Our construction-grade bentonite powder provides the viscosity and fluid-loss control required for deep excavation support in sandy and mixed soil conditions common across Indian construction sites.

For piling contractors, our 200 mesh powder delivers Marsh funnel viscosity of 35–45 seconds per quart at standard mix ratios, with filter cake thickness below 2 mm for clean concreting. For waterproofing applications — basement construction, tunnel linings, and below-grade structures — our high-swelling bentonite creates effective water barriers when applied as slurry or dry powder between foundation elements.

Geosynthetic clay liner (GCL) manufacturers use our bentonite powder as the swelling layer in composite waterproofing membranes. The powder's free swell index and hydraulic conductivity are tested to meet GCL manufacturer specifications for landfill lining, pond sealing, and environmental containment projects.

Radhe Enterprise is an active bentonite powder exporter from India, shipping containerized consignments to the UAE (Jebel Ali, Abu Dhabi), Saudi Arabia (Dammam, Jeddah), Kenya (Mombasa), Tanzania (Dar es Salaam), Nigeria (Lagos), South Africa (Durban), Bangladesh (Chattogram), Sri Lanka (Colombo), Nepal (road freight), USA, UK, and European markets via Mundra, Kandla, and Pipavav ports.

Export bentonite powder consignments include: moisture-barrier laminated PP bag packing (25 kg or 50 kg), palletized loading on fumigated ISPM-15 wooden pallets, container desiccants for humidity control during ocean transit, batch-specific certificate of analysis (moisture, mesh, swell index, and application-specific parameters), certificate of origin (Chamber of Commerce attested where required), and phytosanitary certificate where applicable.

We quote on FOB Mundra/Kandla, CFR destination port, and CIF destination port basis. Ocean transit ranges from 3–5 days (UAE), 12–18 days (East Africa), 18–25 days (Europe), and 20–28 days (USA). For new export buyers, we recommend starting with a 1–5 MT trial lot via LCL before committing to full container programs.

Step 1 — Raw Material Selection: Calcium bentonite clay is sourced from select mine faces in the Bhavnagar mineral belt. Multiple mine sources are blended to maintain consistent montmorillonite content and chemical composition across production batches.

Step 2 — Drying: Raw bentonite (30–40% natural moisture) is sun-dried and then mechanically dried in rotary dryers to achieve 8–12% target moisture — the optimal range for milling efficiency and powder flowability.

Step 3 — Milling & Classification: Dried bentonite is fed through hammer mills or roller mills, then air-classified to achieve target mesh distribution (200 or 300 mesh). Classification parameters — rotor speed, airflow, and cut point — are calibrated for each grade. Oversize material is recirculated for re-grinding.

Step 4 — Quality Testing: Every production lot undergoes sieve analysis (wet and dry methods), moisture content (infrared balance), swell index (2g in 100ml distilled water), bulk density, and application-specific tests (viscosity for drilling, green strength for foundry, fired colour for ceramics). Test results are recorded against lot numbers for traceability.

Step 5 — Packing & Dispatch: Tested powder is packed in laminated PP bags with inner moisture-barrier liners on automated bagging lines. Bag weight is verified (typically ±0.2 kg tolerance on 25 kg bags). Packed bags are palletized, stretch-wrapped, and stored in covered sheds awaiting dispatch with lot-numbered dispatch documents.