Bentonite

Chemical Formula

(Na,Ca)₀.₃₃(Al,Mg)₂Si₄O₁₀(OH)₂·nH₂O

Available Forms

 Raw Bentonite Lumps
 Crushed Bentonite
 Bentonite Granules
 Bentonite Powder
 Micronized Bentonite Powder

Standard Sizes

Lumps

 10–30 mm
 20–50 mm
 30–80 mm
 Customized sizes available

Powder

 100 Mesh
 200 Mesh
 300 Mesh
 325 Mesh
 400 Mesh
 Customized mesh sizes available

Grades with Typical Specifications & Industrial Applications

1. Sodium Bentonite Grade

Typical Specifications

 Montmorillonite: ≥75%
 Swelling Capacity: 24–35 ml/2g
 Moisture: ≤12%
 pH: 8.5–10.5
 Cation Exchange Capacity (CEC): 70–100 meq/100g

Industrial Applications

 Drilling Mud
 Borewell Drilling
 Horizontal Directional Drilling (HDD)
 Foundation & Piling
 Slurry Walls
 Oil & Gas Exploration

2. Calcium Bentonite Grade

Typical Specifications

 Montmorillonite: ≥70%
 Swelling Capacity: 10–18 ml/2g
 Moisture: ≤12%
 pH: 7.0–9.0
 CEC: 50–80 meq/100g

Industrial Applications

 Animal Feed
 Fertilizers
 Soil Conditioner
 Civil Engineering
 Agriculture

3. Foundry Grade

Typical Specifications

 Montmorillonite: ≥75%
 Green Compression Strength: High
 Moisture: ≤10%
 High Thermal Stability
 Excellent Bonding Strength

Industrial Applications

 Green Sand Casting
 Iron Foundries
 Steel Foundries
 Non-Ferrous Metal Casting
 Moulding Sand

4. Drilling Grade

Typical Specifications

 Yield: ≥90 bbl/ton
 Moisture: ≤12%
 Marsh Funnel Viscosity: 30–45 sec
 Sand Content: ≤2%
 API Compliant (Available on Request)

Industrial Applications

 Oil Well Drilling
 Gas Well Drilling
 Water Well Drilling
 Geothermal Drilling
 Directional Drilling

5. Pelletizing Grade

Typical Specifications

 Montmorillonite: ≥80%
 Moisture: ≤12%
 High Binding Strength
 Fine Particle Size
 Excellent Balling Performance

Industrial Applications

 Iron Ore Pellet Plants
 Sponge Iron Industry
 Steel Plants

6. Civil Engineering Grade

Typical Specifications

 High Swelling Capacity
 Low Permeability
 Excellent Sealing Properties
 Controlled Moisture
 High Plasticity Index

Industrial Applications

 Dam Linings
 Canal Linings
 Landfill Liners
 Tunneling
 Diaphragm Walls
 Foundation Waterproofing

7. Cat Litter Grade

Typical Specifications

 High Absorption Capacity
 Rapid Clumping
 Low Dust
 Moisture: ≤10%
 Odor Control Properties

Industrial Applications

 Cat Litter
 Pet Care Products
 Animal Bedding

8. Cosmetic Grade

Typical Specifications

 High Purity
 Fine Micronized Powder
 Low Heavy Metals
 Soft Texture
 Skin-Safe Quality

Industrial Applications

 Face Masks
 Skin Care Products
 Beauty Products
 Cosmetic Formulations
 Spa Products

9. Pharmaceutical Grade

Typical Specifications

 High Purity
 Low Microbial Count
 Heavy Metals Within Pharmacopoeia Limits
 Fine Particle Size
 Controlled Moisture

Industrial Applications

 Pharmaceutical Formulations
 Medicinal Preparations
 Tablet Manufacturing
 Drug Processing

10. Detergent Grade

Typical Specifications

 Fine Powder
 High Absorption Capacity
 Low Moisture
 Uniform Particle Size
 Excellent Carrier Properties

Industrial Applications

 Detergent Powder
 Cleaning Compounds
 Household Cleaning Products
 Industrial Cleaners

11. Paint & Coating Grade

Typical Specifications

 High Brightness
 Fine Micronized Powder
 Excellent Suspension Properties
 Low Moisture
 Uniform Particle Size

Industrial Applications

 Decorative Paints
 Industrial Coatings
 Primers
 Texture Paints
 Protective Coatings

12. Fertilizer Grade

Typical Specifications

 High Absorption Capacity
 Controlled Moisture
 Fine Granules or Powder
 Excellent Carrier Properties
 Neutral pH

Industrial Applications

 NPK Fertilizers
 Organic Fertilizers
 Micronutrient Carriers
 Soil Improvement
 Agricultural Formulations

Customization Available
MERIDIAN GEOROCK MINERAL LLP supplies Bentonite in customized sodium or
calcium grades with tailored swelling capacity, viscosity, montmorillonite content, particle
size, moisture level, mesh size, and chemical specifications to meet specific customer and
international industry requirements.