The Decanter Centrifuge for Gypsum Slurry Dewatering is designed for continuous solid-liquid separation, gypsum recovery, slurry thickening, and process-water clarification.

It is suitable for FGD gypsum, phosphogypsum, chemical gypsum, gypsum washing slurry, neutralization slurry, and other calcium sulfate suspensions. The centrifuge separates gypsum crystals, fine mineral particles, fly ash, unreacted limestone, and suspended impurities from the liquid phase.

• FGD gypsum slurry dewatering
• Phosphogypsum slurry thickening
• Chemical gypsum recovery
• Gypsum washing-water clarification
• Desulfurization wastewater pretreatment
• Filter press feed thickening
• Vacuum belt filter feed preparation
• Gypsum process-water recycling
• Calcium sulfate solids recovery
• Fine mineral slurry treatment

Peony provides continuous separation solutions for gypsum slurry dewatering, solids recovery, slurry thickening, and process-water recycling.

FGD / Phosphogypsum / Chemical Gypsum Process
→ Agitated Slurry Tank
→ Optional Flocculant Dosing
→ Decanter Centrifuge
→ Thickened Gypsum Solids
→ Filter Press / Vacuum Belt Filter / Dryer / Storage

Clarified Liquid
→ Process-Water Tank
→ Recycle or Further Treatment

Peony Can Provide

• Gypsum slurry testing and centrifuge selection
• Agitated slurry buffer tank
• Controlled feed pump
• Optional flocculant dosing system
• Adjustable bowl and differential speed
• Pond-depth control
• Wear-resistant scroll and discharge area
• Corrosion-resistant wetted components
• Clarified-liquid recycle connection
• PLC and VFD control system
• Connection to downstream filtration or drying equipment

---

Technical Parameter

Gypsum Slurry Type

FGD gypsum, phosphogypsum, and chemical gypsum have different particle sizes, impurities, pH values, and corrosion conditions. The exact slurry source should be confirmed before selection.

Particle Size and Crystal Shape

Coarser gypsum crystals normally settle more easily. Fine crystals or irregular particles may require higher centrifugal force or flocculant dosing.

Slurry Concentration

Feed concentration affects throughput, torque, liquid clarity, and discharged-solids concentration. Stable feeding helps maintain consistent operation.

Corrosive Components

FGD and phosphogypsum slurry may contain chlorides, fluorides, acids, or other corrosive components. Liquid composition and temperature should be provided for material selection.

Abrasive Impurities

Silica, fly ash, sand, unreacted limestone, and mineral impurities may increase wear in the feed zone, scroll, and solids outlet.

Flocculant Compatibility

Flocculant may improve fine-particle capture and liquid clarity. Laboratory testing is recommended before confirming the dosing system.

Continuous Gypsum Recovery

The centrifuge continuously separates gypsum crystals from the slurry, reducing product loss and avoiding frequent batch interruptions.

Stable Dewatering Performance

Bowl speed, differential speed, pond depth, and feed rate can be adjusted according to gypsum crystal size and slurry concentration.

Lower Final Moisture

The high centrifugal force removes free liquid from gypsum solids and improves the feed condition for further filtration or drying.

Process-Water Recovery

Clarified liquid can be recycled to washing, slurry preparation, or other production stages when it meets the process requirement.

Wear and Corrosion Protection

Optional wear-resistant and corrosion-resistant components support reliable operation with silica, fly ash, chlorides, fluorides, and other impurities.

Please provide:

• Gypsum slurry source
• FGD gypsum, phosphogypsum, or chemical gypsum
• Particle-size distribution
• Feed solids concentration
• Slurry density and viscosity
• Feed temperature and pH
• Chloride, fluoride, and acid content
• Required processing capacity
• Required solids recovery rate
• Target solids concentration or moisture
• Required clarified-liquid quality
• Process-water recycling requirement
• Abrasive impurity content
• Flocculant currently used
• Downstream filtration or drying equipment
• Required material of construction
• Wear-protection requirement
• Electrical and control standard

Peony welcomes cooperation with power plants, phosphoric acid plants, chemical gypsum producers, desulfurization contractors, wastewater treatment companies, distributors, and industrial separation partners.

We support partners with slurry testing, centrifuge selection, corrosion-resistant material selection, wear-resistant configuration, flocculant dosing, process-water recycling, installation guidance, commissioning, spare parts, and after-sales service.

Send us your gypsum slurry information, including slurry type, particle size, solids concentration, required capacity, liquid composition, clarified-liquid target, and downstream arrangement. Our engineering team will recommend a suitable decanter centrifuge solution for your gypsum slurry dewatering process.