Sodium Bentonite
Sodium Bentonite is a natural volcanic ash clay renowned for its exceptional water absorption and high swelling capacity. When hydrated, it expands significantly, creating a robust, impermeable barrier that makes it an indispensable mineral in technical and industrial engineering projects.
• Drilling Mud: Critical for lubricating and cooling cutting tools.
• Foundry Sand: High-strength bonding agent for iron and steel casting.
• Civil Engineering: Essential for sealing, waterproofing, and groundwater barriers.

Technical Specifications
Chemical Parameters
- Moisture: <12%
- pH Value: 8.5 – 10.5
- Swelling Index: >25ml
- Clay Content: >90%
Particle Size Ranges
Available in a variety of grades, including 75-micron fine powder, Granular forms (0.5 – 2.0 mm), and raw Sodium Bentonite Lumps for diverse industrial processing.
Packaging Options
We offer secure and durable packaging including 25kg PP/Paper bags, 1MT or 1.25MT Jumbo bags, and direct Bulk shipments for large-scale operations.
Industrial Applications

Drilling Fluids
Sodium Bentonite serves as a key component in drilling muds, providing essential lubrication and cooling for cutting bits while facilitating the removal of cuttings.

Foundry Sand
Used as a high-strength bonding agent for iron and steel casting, it ensures shape integrity and high-quality mold finishes in metallurgy.

Iron Ore Pelletizing
Acting as a binder in the iron ore pelletization process, it helps create durable pellets that withstand transport and blast furnace reduction.

Civil Engineering
Critical for constructing slurry walls and foundation piling, providing structural stability and preventing groundwater infiltration.

Agriculture & Environment
Used for soil sealing and waste treatment, creating impermeable barriers for water conservation and pollutant containment.
Inquire About Sodium Bentonite
Connect with our technical team to receive detailed documentation, laboratory reports, or a customized quotation for your specific industrial project requirements.