The Decanter Centrifuge for Coal Washing Slurry Dewatering is designed for continuous solid-liquid separation, coal fines recovery, slurry thickening, and process-water clarification in coal preparation plants.

It is suitable for coal washing wastewater, coal slime water, flotation tailings, thickener underflow, fine coal slurry, and process-water recycle systems. The centrifuge separates fine coal particles, clay, mud, and mineral solids from the liquid phase. Thickened solids can be sent to a filter press, belt filter, dryer, stockpile, or disposal section. Clarified liquid can be returned to the coal washing circuit or further treatment system.

• Coal washing slurry dewatering
• Coal slime water treatment
• Fine coal recovery from wash water
• Flotation tailings slurry thickening
• Thickener underflow dewatering
• Coal preparation plant wastewater treatment
• Filter press feed thickening
• Process-water recycle in coal washing plants
• Clay, mud, and mineral solids removal
• Tailings water clarification before discharge or reuse

Peony provides continuous solid-liquid separation for coal washing slurry, coal slime water, tailings slurry, and process-water recycle.

Coal Washing / Flotation / Classification → Slurry Tank → Optional Flocculant Dosing → Decanter Centrifuge → Thickened Coal Slime Solids → Filter Press / Belt Filter / Dryer / Stockpile

Clarified Liquid → Process Water Tank → Recycle to Coal Washing, Classification, or Further Treatment

Peony can provide:

• Decanter centrifuge selected according to coal slurry condition
• Agitated slurry buffer tank for stable feeding
• Controlled feed pump and flow regulation system
• Optional flocculant dosing and mixing system
• Adjustable differential speed and pond depth control
• Wear-resistant scroll, feed zone, and solids-discharge configuration
• Clarified water collection and recycle connection
• PLC and VFD automatic control system
• Connection to filter press, belt filter, dryer, stockpile, or wastewater treatment system

Coal Particle Size and Fine Content

Fine coal, clay, and ultrafine suspended solids affect solids recovery, clarified-water quality, and throughput. Particle-size distribution should be checked before selection.

Slurry Solids Concentration

Coal washing slurry may fluctuate during operation. A buffer tank and controlled feed pump help maintain stable centrifuge performance.

Abrasion Condition

Coal slurry can contain sand, stone powder, clay, and other abrasive minerals. Wear-resistant protection is recommended for long-term operation.

Flocculant Compatibility

Flocculant may improve fine-particle capture and liquid clarity. Dosing type and dosage should be confirmed through slurry testing.

Clarified Water Requirement

If the clarified liquid will be reused directly in the washing circuit, the required suspended-solids level should be confirmed.

Continuous Coal Slime Thickening

The decanter continuously thickens coal washing slurry without batch interruption, making it suitable for large-volume coal preparation plant wastewater.

Fine Coal Recovery

Fine coal particles in wash water or flotation tailings can be recovered and concentrated, reducing material loss and improving solids handling.

Process-Water Recycle

Clarified liquid can be reused in coal washing, rinsing, classification, or slurry preparation, helping reduce fresh-water consumption.

Lower Filter Press Load

The centrifuge thickens slurry before filter pressing or belt filtration, reducing liquid volume and improving downstream dewatering efficiency.

Wear-Resistant Design

Coal slurry may contain sand, clay, stone powder, and abrasive mineral particles. Wear protection can be added to the scroll, feed zone, bowl cone, and solids discharge area.

Stable Operation for Variable Feed

Bowl speed, differential speed, pond depth, and feed rate can be adjusted according to slurry concentration, particle size, flow rate, and required liquid clarity.

Please provide the following information for a suitable coal washing slurry dewatering solution:

• Coal washing process stage
• Particle-size distribution
• Fine coal and clay content
• Slurry solids concentration
• Slurry density and viscosity
• Required processing capacity
• Required solids recovery rate
• Target solids concentration after centrifugation
• Clarified-water quality requirement
• Process-water recycle requirement
• Sand, stone powder, or abrasive impurity content
• Flocculant or polymer currently used
• Downstream filter press, belt filter, dryer, or storage arrangement
• Required material of construction
• Electrical and control standard

Peony welcomes distributor and agent cooperation with coal preparation plants, coal washing equipment suppliers, mining contractors, mineral processing companies, wastewater treatment companies, and industrial separation partners.

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

Send us your coal washing slurry information, including particle size, solids concentration, clay content, required capacity, recovery target, clarified-water requirement, abrasion condition, and downstream handling arrangement. Our engineering team will recommend a suitable decanter centrifuge solution for your coal washing slurry dewatering process.