Decanter Centrifuge for Phosphate Slurry Dewatering

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

It is suitable for phosphate rock washing, beneficiation slurry, fertilizer-process slurry, phosphate-containing wastewater, and mineral fines recovery. The centrifuge separates phosphate solids from the liquid phase continuously. Thickened phosphate solids can be sent to a filter press, dryer, storage tank, granulation section, or further processing stage. Clarified liquid can be reused in washing, grinding, slurry preparation, or wastewater treatment.

• Phosphate rock slurry thickening
• Phosphate beneficiation wastewater treatment
• Phosphate fines recovery
• Fertilizer-process slurry dewatering
• Phosphate washing-water clarification
• Phosphoric acid process solids recovery
• Filter press feed thickening
• Process-water recycle in phosphate plants

Peony provides continuous solid-liquid separation for phosphate slurry thickening, solids recovery, and process-water recycle.

Phosphate Washing / Grinding / Classification → Slurry Tank → Optional Flocculant Dosing → Decanter Centrifuge → Thickened Phosphate Solids → Filter Press / Dryer / Storage

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

Peony can provide:

• Decanter centrifuge selected according to phosphate 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 liquid collection and recycle connection
• PLC and VFD automatic control system
• Connection to filter press, dryer, storage, or wastewater treatment system

Particle Size and Fine Content

Fine phosphate particles may require higher centrifugal force, longer residence time, or flocculant conditioning to improve solids recovery and liquid clarity.

Abrasion Level

Phosphate rock slurry can contain quartz, sand, and silica. Wear protection should be selected according to particle hardness, solids concentration, and operating hours.

Slurry Concentration and Viscosity

High solids concentration or high viscosity may reduce separation capacity. Stable feeding is important for consistent operation.

Corrosion Condition

For acid-related phosphate slurry, pH, temperature, chloride content, fluoride content, and chemical composition should be checked before confirming the material of construction.

Final Moisture Requirement

A decanter centrifuge is mainly used for continuous thickening and primary dewatering. If lower final moisture is required, it can be combined with a filter press, belt filter, vacuum filter, or dryer.

Continuous Phosphate Solids Recovery

The decanter continuously recovers phosphate solids from slurry, wash water, and process wastewater without batch interruption.

Wear-Resistant Configuration

Phosphate slurry may contain sand, quartz, silica, and other abrasive mineral particles. Wear-resistant 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, viscosity, and required throughput.

Process-Water Recycle

Clarified liquid can be reused in washing, grinding, or slurry preparation, helping reduce fresh-water consumption and wastewater load.

Lower Filtration and Drying Load

By thickening phosphate slurry before downstream filtration or drying, the decanter helps reduce liquid volume and improve overall handling efficiency.

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

• Phosphate material type and process stage
• Particle-size distribution
• Fine-particle content
• Slurry solids concentration
• Slurry density and viscosity
• Required processing capacity
• Required phosphate recovery rate
• Target solids concentration after centrifugation
• Clarified liquid quality requirement
• Water recycle requirement
• Sand, silica, or quartz content
• Slurry pH, temperature, and chemical composition
• Flocculant or polymer currently used
• Downstream filter press, dryer, or storage arrangement
• Required material of construction
• Electrical and control standard

Peony welcomes distributor and agent cooperation with phosphate mining companies, fertilizer manufacturers, phosphate beneficiation plants, phosphoric acid producers, mineral processing contractors, wastewater treatment companies, and industrial separation partners.

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

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