The Decanter Centrifuge for Paper Coating Slurry Recovery is designed for continuous coating-pigment recovery, slurry thickening, wash-water clarification, and filter-press feed preparation.

It is suitable for paper coating colors containing kaolin, calcium carbonate, titanium dioxide, latex binders, starch, dispersants, and other coating additives.

• Off-spec paper coating slurry recovery
• Coating kitchen wash-water treatment
• Coater cleaning wastewater clarification
• Kaolin coating slurry thickening
• GCC and PCC slurry recovery
• Titanium dioxide pigment recovery
• Coating sludge volume reduction
• Filter press feed preparation
• Paper mill process-water clarification
• Coating wastewater pretreatment

Fine Pigment Particles

Kaolin, calcium carbonate, and titanium dioxide particles may remain suspended.

Higher centrifugal force and optional coagulation or flocculation can improve solids recovery.

Latex and Binder Deposits

Latex, starch, and synthetic binders may create sticky sludge or deposits inside the machine.

Stable feeding, suitable differential speed, and regular flushing help maintain continuous discharge.

High Slurry Viscosity

Concentrated coating color may have high viscosity and poor flowability.

An agitated buffer tank and controlled feed pump help stabilize the feed condition.

Grade and Color Contamination

Different coating formulations should be collected separately when recovered solids will be returned to production.

Dedicated pipelines and flushing systems help reduce cross-contamination.

Fiber and Coarse Impurities

Paper fibers, dried coating lumps, and foreign particles may block the feed system.

Screening is recommended before the slurry enters the centrifuge.

Peony provides continuous separation solutions for coating-pigment recovery, sludge thickening, water clarification, and downstream filtration preparation.

Paper Coating / Coater Cleaning / Tank Washing
→ Screening
→ Agitated Slurry Tank
→ Optional pH Adjustment / Flocculation
→ Decanter Centrifuge
→ Thickened Coating Solids
→ Rework Evaluation / Filter Press / Dryer / Disposal

Clarified Liquid
→ Water Tank
→ Polishing Filtration / Biological Treatment / Membrane Treatment
→ Reuse or Discharge

Peony Can Provide

• Coating slurry testing and centrifuge selection
• Screening and slurry buffer tank
• Controlled feed pump
• Optional chemical dosing system
• Adjustable bowl and differential speed
• Pond-depth and torque control
• Anti-stick internal configuration
• Automatic flushing or CIP
• Clarified-liquid collection system
• PLC and VFD automatic control
• Filter press or wastewater-treatment integration

Continuous Pigment Recovery

Recovers suspended kaolin, calcium carbonate, titanium dioxide, and other coating solids.

Stable Slurry Thickening

Provides a more consistent solids concentration for rework, filtration, or sludge handling.

Reduced Wastewater Load

Removes coating solids before biological, flotation, or membrane treatment.

Anti-Stick and Cleaning Design

Flushing and CIP connections help reduce latex, starch, and binder deposits.

Lower Product Loss

Separate collection and controlled processing can support recovery of compatible off-spec coating slurry.

Please provide:

• Coating pigment and binder type
• Particle size and solids concentration
• Slurry viscosity, pH, and flow rate
• Required recovery and liquid clarity
• Reuse or downstream treatment plan