Decanter Centrifuge for Bentonite Slurry Dewatering

The Peony Decanter Centrifuge for Bentonite Slurry Dewatering is designed for the continuous thickening, dewatering, and recovery of bentonite slurry generated during mining, washing, beneficiation, drilling fluid treatment, mineral processing, and wastewater recovery.

Bentonite slurry is often highly viscous and contains ultra-fine clay particles with strong water-retention properties. A properly selected decanter centrifuge separates the slurry into a concentrated bentonite solids phase and clarified liquid phase for recycle, reuse, or further treatment.

For high-swelling sodium bentonite, low-solids slurry, or difficult-to-settle fine particles, polymer dosing, feed conditioning, differential speed control, and pond-depth adjustment may be required to achieve stable recovery and acceptable liquid clarity.

• Bentonite slurry thickening after wet beneficiation
• Sodium bentonite slurry dewatering
• Calcium bentonite washing slurry recovery
• Drilling mud solids control and recovery
• Bentonite processing wastewater treatment
• Bentonite fines recovery from wash water
• Foundry bentonite slurry treatment
• Waterproofing bentonite slurry concentration
• Clay mineral slurry dewatering
• Mineral processing tailings thickening
• Bentonite residue recovery before filter pressing
• Process-water recycle from bentonite washing lines

Peony provides the continuous separation section between bentonite slurry preparation and downstream filtration, drying, storage, or water recycle.

Bentonite Ore / Raw Clay → Crushing and Blunging → Screening / Desanding → Slurry Tank → Optional Polymer Dosing → Decanter Centrifuge → Thickened Bentonite Solids → Filter Press / Dryer / Storage

Clarified Liquid → Process Water Tank → Recycle to Washing or Slurry Preparation

Peony can provide:

• Decanter centrifuge matched to bentonite slurry characteristics
• Agitated slurry buffer tank to prevent settling and viscosity layering
• Controlled feed pump and flow regulation system
• Optional polymer dosing and mixing arrangement
• Adjustable bowl speed, differential speed, and pond depth
• Clarified liquid collection and recycle connection
• Wear-resistant scroll and solids-discharge configuration
• PLC and VFD control system
• Connection to filter press, dryer, storage tank, or wastewater treatment system

Bentonite Type

Sodium bentonite, calcium bentonite, activated bentonite, and mixed clay materials can behave differently in water. Swelling tendency, viscosity, and water retention should be confirmed before model selection.

Fine Particle Content

Bentonite often contains ultra-fine particles that settle slowly. Where liquid clarity or solids recovery is critical, polymer dosing or feed conditioning may be required.

Feed Solids Concentration

Very dilute slurry may require higher hydraulic capacity or additional thickening before dewatering. High-solids slurry may require stronger feed control to prevent overload.

Slurry Viscosity

High viscosity can reduce settling performance and affect solids conveying. Differential speed and torque protection should be selected according to actual slurry behavior.

Final Moisture Requirement

A decanter centrifuge is usually used for continuous thickening and primary dewatering. When very low final moisture is required, it is often followed by a filter press, vacuum filter, or thermal dryer.

Continuous Slurry Volume Reduction

The decanter centrifuge continuously removes water from bentonite slurry, reducing slurry volume before filter pressing, drying, storage, or transportation.

Better Fine Clay Recovery

It helps recover fine bentonite solids from process water and overflow slurry, reducing product loss and improving water reuse.

Suitable for Variable Slurry Conditions

Bowl speed, differential speed, pond depth, and feed rate can be adjusted to respond to changes in slurry concentration, viscosity, and settling behavior.

Lower Load on Downstream Filtration

Pre-thickening with a decanter centrifuge can reduce the load on filter presses, vacuum filters, and thermal drying equipment.

Automated Operation

With PLC and VFD control, the centrifuge can maintain stable operation with less manual intervention than conventional settling or batch filtration systems.

Wear-Resistant Configuration Available

The feed zone, scroll flights, cone section, and solids discharge area can be protected against wear caused by quartz, sand, grit, or other mineral impurities carried with the clay slurry.

Please provide the following information for a suitable Bentonite Slurry Dewatering solution:

• Bentonite type, such as sodium bentonite or calcium bentonite
• Particle size distribution
• Slurry solids concentration
• Slurry density and viscosity
• Swelling behavior in water
• Sand, quartz, or abrasive impurity content
• Required processing capacity
• Target solids concentration after centrifugation
• Required clarified liquid quality
• Polymer or flocculant currently used
• Process-water recycle requirement
• Downstream filter press, dryer, or storage arrangement
• Required material of construction
• Electrical and control standard
• Explosion-proof requirement, if applicable

Peony welcomes distributor and agent cooperation with bentonite producers, drilling fluid suppliers, mineral processing plants, foundry material manufacturers, wastewater treatment contractors, and industrial separation partners.

We support partners with bentonite slurry testing, centrifuge selection, polymer dosing design, wear-resistant configuration, feed and recycle system integration, installation guidance, commissioning support, spare parts, and after-sales service.

Send us your bentonite type, slurry solids concentration, particle size, viscosity, required capacity, clarified-water target, final moisture requirement, and downstream handling arrangement. Our engineering team will recommend a suitable Decanter Centrifuge solution for your bentonite slurry dewatering process.