Bentonite Manufacturer & Exporter in India
Industrial Bentonite from Kutch, Gujarat, available in Sodium and Calcium grades for drilling, foundry, civil engineering, construction, agriculture and other industrial applications.
Bentonite Manufacturer & Supplier for Industrial Applications
Bentonite Powder, Bentonite Lumps, Bentonite Granules, Sodium Bentonite, Calcium Bentonite and application-specific industrial grades from Kutch, Gujarat.
High-Performance Bentonite for Industrial Applications
Bentonite is a versatile clay mineral rich in montmorillonite, valued for properties such as swelling, binding, sealing and absorption. Its performance depends on mineral composition, grade, processing and the intended application.
UMA INTERNATIONAL TRADELINK supplies Sodium and Calcium Bentonite sourced and processed from the mineral-rich Kutch region of Gujarat, India. We support international buyers with product evaluation, sample verification, customized requirements, packaging and export coordination.
As the export arm of UMA Group of Companies, we connect mineral processing capabilities with international buyers and support application-specific sourcing.
Bentonite Technical Specifications
The following values are the current industrial and premium grade specifications provided for this product range.
| Parameter | Industrial Grade | Premium Grade |
|---|---|---|
| Montmorillonite Content | 75% Min | 90% Min |
| Free Swelling Value | 25–27 ml | 30–35 ml |
| pH Value | 9.0 Min | 9.5–10.5 |
| Moisture Content | 12–15% Max | 10–12% Max |
| Gelling Index | 50% Min | 85–90% |
| Mesh Size — Passing 200 Mesh | 75% Min | 85% Minimum |
Specifications can vary by grade, source material and production batch. Final commercial values should be confirmed against the current COA, approved sample and agreed purchase specification.
Processed Bentonite Forms
Different physical forms support different handling and application requirements. Grade and specification should be selected according to the intended end use.
Powder
Bentonite Powder
200–300 MeshFine 200–300 mesh processed Bentonite powder designed for easy dispersion, strong binding, and stable suspension in industrial formulations. Its fine particle size supports consistent blending and controlled performance in applications where smooth handling and dependable functional behavior are important. The powder provides high dispersion, strong binding capacity, and consistent blend quality. It is suitable for paints and adhesives, chemical suspension systems, industrial briquettes, and clay blends where controlled processing performance is required.
- Fine particle size
- High dispersion
- Strong binding capacity
- Consistent blending
- Paints & adhesives
- Chemical suspension
- Industrial briquettes
- Clay blends
Sodium Bentonite
Sodium Bentonite
High SwellingHigh-swelling natural Sodium Bentonite that can expand up to 15–20 times its dry volume, creating a dense, low-permeability barrier. Its strong swelling, sealing, and self-sealing behavior make it suitable for applications where water control and containment are important. The material provides excellent swelling, natural waterproofing, low permeability, and reliable sealing performance. It is used for landfill liners, borehole stabilization, dam and pond sealing, and geosynthetic clay liner applications.
- High swelling
- Low permeability
- Sealing behavior
- Water control
- Landfill liners
- Borehole stabilization
- Pond & dam sealing
- GCL systems
Calcium Bentonite
Calcium Bentonite
Absorbent ClayHighly absorbent calcium-based Bentonite with strong ion-exchange characteristics and a fine processed texture. Its absorption and purification properties make it useful where moisture uptake, carrier performance, or clay functionality is required. The grade provides strong absorption, ion-exchange behavior, purification support, and a fine processed texture. Typical applications include edible oil refining, pesticide carrier systems, animal feed detoxification, and selected cosmetic and pharmaceutical clay formulations.
- Absorption
- Ion-exchange properties
- Fine processed texture
- Clay functionality
- Selected refining uses
- Pesticide carrier systems
- Adsorbent applications
- Selected clay formulations
Granules
Bentonite Granules
Dust-ControlledDust-free processed Bentonite granules manufactured with controlled absorption and consistent sizing for dependable handling and performance. The uniform granule form helps reduce dust during handling while supporting predictable absorption and convenient packaging. These properties make the material practical for applications where particle consistency and moisture control are important. Typical uses include cat litter, fertilizer carrier systems, soil conditioning, and moisture-absorbent products.
- Lower dust handling
- Controlled absorption
- Uniform granule size
- Convenient packaging
- Cat litter
- Fertilizer carriers
- Soil conditioning
- Moisture absorbents
Bentonite Grades for Global Industries
Application-specific Bentonite options for drilling, foundry, civil engineering, pelletization, containment and selected consumer or agricultural uses.
A. Drilling & Boring Grades
Bentonite grades selected for slurry behavior, borehole support, viscosity control and trenchless drilling requirements.
Drilling
Drilling Grade Bentonite
Bentonite for drilling-fluid applications where slurry performance, suspension, sealing, and borehole support are important. Its viscosity-control and borehole-sealing characteristics can support stable drilling-fluid behavior under demanding operating conditions. The grade is selected according to the required slurry performance, thermal conditions, fluid-loss requirements, and applicable drilling specification. Typical applications include oil and gas exploration, geothermal drilling, and other drilling operations where dependable drilling-fluid performance is critical.
Trenchless
HDD & Micro Tunnelling Bentonite
Fuller application-oriented material for trenchless drilling operations where low friction, slurry stability, and effective cuttings suspension are important. Its controlled slurry behavior helps support smoother drilling and efficient removal of excavated material during underground construction. The grade is selected according to ground conditions, drilling system, slurry requirements, and customer specification. Typical applications include horizontal directional drilling, cable laying, sewer projects, and pipeline installation.
Civil Slurry
Piling & Boring Bentonite
High-yield Bentonite slurry clay developed for foundation, piling, boring, and related civil engineering work. Its slurry performance supports soil stabilization, water control, and borehole stability during demanding ground-engineering operations. The material is suited to projects where reliable slurry behavior and controlled excavation conditions are important, with final selection based on site and project requirements. Typical applications include bridge foundations, diaphragm walls, piling, boring, and other civil construction activities.
B. Industrial & Metal Grades
Bentonite binders for foundry systems and iron ore pelletization, subject to the buyer's process and specification.
Foundry
Foundry Bentonite
High-performance Bentonite binder developed for green-sand metal casting systems. Its binding performance helps provide mould strength and thermal durability, supporting stable mould quality during casting operations. The grade is intended to support consistent sand-mould behavior and dependable casting performance under repeated thermal conditions, with selection based on the foundry's sand system and process requirements. Typical applications include iron and steel foundries, automotive casting operations, and machinery mould production.
Pellet Binder
Iron Ore Pelletization Bentonite
Bentonite binder designed to improve strength and quality during iron ore pellet production. Its binding performance supports the formation of strong, stable pellets while maintaining attention to binder efficiency and impurity levels. The material is selected to support consistent pellet formation and dependable processing performance in steel-making raw-material preparation. It is intended for steel plants and iron ore processing operations where pellet strength and binder efficiency are important.
C. Civil & Engineering Grades
Bentonite for grounding, waterproofing and environmental containment applications where moisture retention or swelling behavior is required.
Earthing
Earthing Bentonite
Conductive Bentonite clay used to support reliable electrical grounding performance through moisture retention and sustained soil-electrode contact. Its moisture-holding properties help maintain suitable contact around grounding electrodes and support stable grounding conditions over time. The material is suited to electrical installations where dependable grounding and soil contact are required, while final performance depends on the complete grounding-system design and installation method. Typical applications include electrical substations, lightning protection systems, data centers, and other grounding installations.
Waterproofing
Pond Sealing & GCL Bentonite
Natural swelling Bentonite used as a low-permeability liner material for waterproofing, containment, and environmental protection applications. Its swelling and sealing behavior helps form an effective barrier when properly selected, designed, and installed. The material can help maintain containment performance in demanding environments, with final suitability depending on liner design, installation conditions, and site chemistry. Typical applications include landfills, dams, lakes, canals, ponds, and geosynthetic clay liner systems where water retention and containment are required.
D. Consumer & Specialty Applications
Selected Bentonite grades for consumer and specialty uses, subject to application-specific quality and regulatory requirements.
Pet Care
Cat Litter Bentonite
Fast-clumping absorbent Bentonite granules designed for efficient moisture absorption, odor control, and convenient cleaning. The granulated structure supports rapid liquid uptake and practical handling in consumer pet-care products. Its clumping behavior helps form manageable waste units while reducing cleanup effort during routine use. The material is primarily used for cat litter and related pet-care applications where absorption, odor control, and easy maintenance are important.
Specialty
Purified Bentonite for Selected Specialty Uses
Purified or specially processed Bentonite can be evaluated for selected cosmetic, personal-care, and specialty formulations where controlled clay functionality is required. Its performance may support absorbent, rheology, binding, or formulation-specific roles depending on the grade. Final selection depends on purity, processing, chemical limits, and the regulatory requirements of the intended application. Typical uses may include selected cosmetic and personal-care formulations, subject to customer approval and applicable regulations.
E. Agricultural & Animal Care
Selected Bentonite materials for agricultural and animal-care applications, subject to the required feed, purity and regulatory specifications.
Application Grade
Bentonite for Selected Animal Feed Applications
Absorbent Bentonite used in selected animal-feed formulations for functional purposes such as adsorption and support during feed processing. Its properties may contribute to toxin-binding or pellet-processing objectives where the material meets the required feed-grade specification. Any feed-use Bentonite must be evaluated against the applicable feed-safety, purity, regulatory, and customer requirements before commercial use. Typical applications may include poultry feed, dairy nutrition, and aquafeed formulations, subject to approval.
Quality Assurance & Export Support
Bentonite grades are evaluated against the applicable buyer specification and intended end use. Sample approval and current technical documentation provide a stronger basis for commercial supply.
- Packaging: 25 kg / 50 kg PP bags and Jumbo Bags
- Lead Time: 10–15 Days
- Origin: Kutch, Gujarat, India
- Supply Support: Sample evaluation, documentation and export shipment coordination
What to Share Before Requesting a Bentonite Quotation
The more specific the requirement, the more accurately the suitable grade and commercial option can be evaluated.
1. Application
Tell us whether the material is for drilling, foundry, piling, sealing, pelletization, agriculture, pet care or another application.
2. Technical Requirement
Share your existing specification, COA, free-swell requirement, gelling requirement, moisture limit, mesh size or other critical parameters.
3. Commercial Requirement
Share quantity, packing preference, destination port and preferred Incoterm so the commercial offer can be evaluated accurately.
Important: Product suitability, certification and regulatory compliance depend on the exact grade and application. Final specifications should be confirmed against the current COA, approved sample and applicable customer or regulatory requirements.
Bentonite Guides & Resources
Practical technical information to help buyers understand Bentonite grades, applications, performance and supplier selection.
Sodium vs Calcium Bentonite: Key Differences, Properties & Applications
Compare swelling, absorption, sealing and other functional characteristics to understand which Bentonite type fits an application.
READ ARTICLE →
How to Select Bentonite for Drilling, Foundry & Civil Engineering
Learn how application, swelling, moisture, gelling, particle size and technical requirements influence grade selection.
READ ARTICLE →Bentonite — Your Questions, Answered
Practical information for international buyers evaluating, selecting and sourcing Bentonite for specific industrial applications.
01 Can UMA provide a Bentonite sample before a commercial order? +
Yes. For new buyers, samples can be provided for laboratory, application or internal quality evaluation before proceeding with larger commercial quantities. This allows the buyer to evaluate the material against the intended application and technical requirement before a trial shipment or bulk order is finalized.
02 What information should a buyer provide when requesting a Bentonite quotation? +
A useful enquiry should include the intended application, required Bentonite type or grade, technical specification if available, estimated quantity, preferred packaging, destination port and preferred commercial terms such as FOB or CIF where applicable. Sharing an existing technical specification or laboratory report is especially helpful when the requirement needs to be matched to a specific grade.
03 What is the difference between Sodium Bentonite and Calcium Bentonite? +
Sodium Bentonite and Calcium Bentonite are selected for different performance characteristics and applications. Sodium Bentonite is commonly associated with high swelling, sealing and slurry-related performance, making it suitable for applications such as drilling and civil engineering. Calcium Bentonite is more commonly selected where absorption and related functional properties are required. The correct choice should therefore be based on the buyer's application and technical specification rather than grade name alone.
04 Which Bentonite properties should be evaluated for drilling, foundry or civil applications? +
The important parameters depend on the application. Buyers may need to evaluate properties such as montmorillonite content, free swelling value, pH, moisture, gelling performance and particle size. For drilling requirements, compliance with the applicable technical specification is particularly important. For foundry and civil applications, the required performance characteristics can differ, so the buyer's application and specification should be reviewed before selecting the grade.
05 Can UMA match an existing Bentonite specification or laboratory report? +
Yes. Buyers can share their existing technical specification, laboratory report, sieve requirement or application details with our team. We can then evaluate the closest suitable Bentonite grade and discuss the required product parameters before arranging sampling and quotation.
06 How does UMA verify Bentonite quality before a first commercial shipment? +
The evaluation can begin with the buyer's review of the technical information and testing of the product sample. For a new commercial relationship, a trial-shipment approach can then be used so the buyer can evaluate the actual delivered material against the agreed requirement before moving toward larger-volume cooperation. Relevant product documentation and technical communication can be provided throughout the evaluation process.
Share Your Bentonite Requirement
Tell us your application, grade, quantity, packaging and destination. Our team will review the requirement and guide you toward the most suitable Bentonite option.