The Decanter Centrifuge for Fly Ash Slurry Dewatering is designed for continuous solid-liquid separation, fly ash recovery, slurry thickening, and process-water clarification.

It is suitable for coal-fired power plant ash slurry, ash pond dredging slurry, fly ash washing water, classification overflow, wet ash handling systems, and fly ash beneficiation wastewater.

The centrifuge separates fly ash particles, unburned carbon, silica-rich solids, mineral fines, and other suspended impurities from the liquid phase.

• Fly ash slurry dewatering
• Ash pond dredging slurry treatment
• Fly ash washing-water clarification
• Wet ash handling system treatment
• Fly ash beneficiation slurry thickening
• Classification overflow treatment
• Filter press feed thickening
• Process-water recycling
• Power plant wastewater pretreatment
• Fine mineral solids recovery

Peony provides continuous separation solutions for fly ash recovery, slurry thickening, process-water clarification, and wastewater-volume reduction.

Ash Pond / Fly Ash Washing / Wet Ash Handling
→ Agitated Slurry Tank
→ Optional Flocculant Dosing
→ Decanter Centrifuge
→ Thickened Fly Ash Solids
→ Filter Press / Dryer / Storage / Beneficiation

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

Peony Can Provide

• Fly ash 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
• Clarified-liquid collection system
• PLC and VFD automatic control
• Connection to filter press, dryer, or wastewater system

Particle Size and Fine Content

Fly ash normally contains a high proportion of fine particles. Ultrafine or low-density particles may settle slowly and affect liquid clarity.

Particle-size distribution and settling tests should be checked before selection.

Slurry Concentration

Feed concentration affects processing capacity, bowl torque, solids dryness, and liquid clarification.

A stable feed tank and controlled pump help maintain consistent operation.

Ash Composition

Silica, alumina, iron oxide, calcium compounds, and unburned carbon can affect density, settling behavior, wear, and solids reuse options.

Abrasive Wear

Fly ash slurry may contain hard silica particles, sand, bottom ash, or other abrasive minerals.

Wear protection is recommended for the feed zone, scroll conveyor, conical section, and solids-discharge ports.

Flocculant Compatibility

Flocculant may improve the recovery of fine fly ash particles and increase liquid clarity.

Laboratory testing is recommended before confirming the polymer type and dosing rate.

Continuous Fly Ash Recovery

The centrifuge continuously separates fly ash solids from process water and ash slurry without frequent batch interruptions.

Stable Slurry Thickening

Bowl speed, differential speed, pond depth, and feed rate can be adjusted according to ash concentration and settling behavior.

Process-Water Recycling

Clarified liquid can be returned to ash washing, slurry transport, or other plant processes when it meets the required quality.

Reduced Wastewater Volume

Recovering solids and recycling liquid can reduce the volume sent to wastewater treatment or ash ponds.

Optional Wear Protection

Wear-resistant components improve equipment service life when handling silica, sand, and other abrasive particles.

Please provide:

• Fly ash slurry source
• Ash pond, washing, classification, or wet ash process
• Particle-size distribution
• Fine-particle content
• Feed solids concentration
• Slurry density and viscosity
• Feed temperature and pH
• Required processing capacity
• Required solids recovery rate
• Target solids concentration or moisture
• Clarified-liquid quality requirement
• Process-water recycling requirement
• Silica, sand, and bottom ash content
• Unburned carbon content
• Flocculant currently used
• Downstream filter press, dryer, or storage system
• Required material of construction
• Wear-protection requirement
• Electrical and control standard

Peony welcomes cooperation with coal-fired power plants, fly ash processing companies, ash pond remediation contractors, mineral beneficiation companies, wastewater treatment companies, distributors, and industrial separation partners.

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

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