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400mm decanter separator
,3650rpm decanter separator
,3 phase decanter centrifuge
The Decanter Centrifuge for Iron Ore Slurry Dewatering is designed for continuous solid-liquid separation, iron ore fines recovery, slurry thickening, and process-water clarification.
It is suitable for iron ore beneficiation plants, grinding and classification slurry, tailings water treatment, concentrate slurry thickening, and mineral washing wastewater. The centrifuge separates iron ore fines, clay, mud, and mineral solids from the liquid phase. Thickened solids can be sent to a filter press, belt filter, dryer, stockpile, or further mineral processing stage. Clarified liquid can be reused in grinding, washing, classification, or wastewater treatment.
- Iron ore slurry dewatering
- Iron ore fines recovery
- Beneficiation tailings thickening
- Grinding and classification slurry treatment
- Iron ore washing-water clarification
- Thickener underflow dewatering
- Filter press feed thickening
- Process-water recycle in iron ore plants
- Mineral sludge volume reduction
- Tailings water clarification before reuse or discharge
| Process Requirement | Decanter Centrifuge Solution |
|---|---|
| Continuous slurry treatment | Continuous feed and solids discharge |
| Fine iron ore recovery | High centrifugal separation force |
| Abrasive mineral particles | Wear-resistant scroll and discharge protection |
| Variable feed concentration | Adjustable bowl speed and differential speed |
| Water recycle | Clarified liquid for reuse or treatment |
| Lower downstream load | Thickened slurry before filter press or dryer |
| Automatic operation | PLC-controlled continuous running |
Iron Ore Slurry Dewatering Solution
Peony provides continuous solid-liquid separation for iron ore slurry thickening, fine solids recovery, and process-water recycle.
Iron Ore Grinding / Washing / Classification → Slurry Tank → Optional Flocculant Dosing → Decanter Centrifuge → Thickened Iron Ore Solids → Filter Press / Belt Filter / Dryer / Stockpile
Clarified Liquid → Process Water Tank → Recycle to Grinding, Washing, Classification, or Further Treatment
Peony can provide:
- Decanter centrifuge selected according to iron ore 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, bowl cone, 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
How the Decanter Centrifuge Works
1. Iron Ore Slurry Feeding
Iron ore slurry enters the rotating bowl through a controlled feed pipe.
An agitated slurry tank is normally recommended upstream to prevent settling and maintain stable feed concentration.
2. Centrifugal Sedimentation
Inside the high-speed rotating bowl, centrifugal force separates iron ore fines, clay, mud, and mineral solids from the liquid phase.
The heavier particles settle against the bowl wall, while clarified liquid remains closer to the center.
3. Continuous Solids Conveying
The internal screw conveyor rotates at a controlled differential speed relative to the bowl.
This movement transports settled iron ore solids toward the conical end for continuous discharge.
4. Clarified Liquid Discharge
The separated liquid leaves through the liquid outlet.
It can be returned to grinding, washing, classification, process-water recycle, or further wastewater treatment.
5. Thickened Iron Ore Solids Discharge
The concentrated iron ore fines and mineral solids are discharged continuously from the solids outlet.
Recovered solids can be transferred to a filter press, belt filter, dryer, stockpile, tailings system, or further mineral processing stage.
| Model | Diameter (mm) | Length (mm) | Length-to-diameter rate | G force | Max solid discharge (m³/h) | Weight (kg) | Dimension (L*W*H) (mm) |
|---|---|---|---|---|---|---|---|
| PDC-10 | 250 | 1000 | 4 | 4080 | 0.4 | 1000 | 2410*800*1080 |
| PDC-12 | 4200 | 1350 | 4 | 3500 | 0.6 | 1200 | 2610*800*1080 |
| PDC-12 | 4200 | 1350 | 4.5 | 3180 | 1.2 | 1800 | 3495*840*1180 |
| PDC-18 | 4000 | 1600 | 4.5 | 3180 | 1.2 | 3200 | 3497*1020*1385 |
| PDC-18 | 450 | 2150 | 4 | 2500 | 2 | 3800 | 4447*1080*1385 |
| PDC-20 | 400 | 2250 | 4.5 | 2500 | 3.5 | 4000 | 4580*1140*1470 |
| PDC-21 | 530 | 2280 | 4.3 | 2500 | 5 | 5000 | 4924*1170*1540 |
| PDC-26 | 655 | 2800 | 4.3 | 2270 | 8 | 7000 | 4300*1900*1350 |
Particle Size and Fine Content
Fine iron ore particles, clay, and ultrafine mineral solids affect recovery rate, clarified-water quality, and throughput.
Abrasion Condition
Iron ore slurry can be highly abrasive. Wear protection should be selected according to particle hardness, solids concentration, and operating time.
Slurry Solids Concentration
Feed concentration may change during grinding, classification, or tailings treatment. A buffer tank and controlled feed pump help maintain stable separation.
Flocculant Compatibility
Flocculant may improve fine-particle capture and liquid clarity. Slurry testing is recommended before confirming dosing type and dosage.
Clarified Water Requirement
If clarified liquid will be reused directly in the process, the required suspended-solids level should be confirmed.
Downstream Dewatering
The decanter 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 Iron Ore Fines Recovery
The decanter continuously recovers iron ore fines from slurry, washing water, and tailings water, helping reduce solid loss and improve process-water reuse.
Wear-Resistant Configuration
Iron ore slurry is abrasive and may contain quartz, sand, clay, and hard 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, viscosity, and required throughput.
Process-Water Recycle
Clarified liquid can be returned to the grinding, washing, or classification circuit, helping reduce fresh-water consumption and wastewater load.
Lower Downstream Load
The centrifuge thickens slurry before filter pressing or drying, reducing liquid volume and improving downstream handling efficiency.
Please provide the following information for a suitable iron ore slurry dewatering solution:
- Iron ore process stage
- Particle-size distribution
- Fine-particle 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
- Quartz, sand, or abrasive impurity content
- Flocculant or polymer currently used
- Downstream filter press, belt filter, dryer, or stockpile arrangement
- Required material of construction
- Electrical and control standard
Can a decanter centrifuge recover iron ore fines?
Yes. It can continuously recover iron ore fines from slurry, washing water, classification overflow, and tailings water. Recovery performance depends on particle size, slurry concentration, and clarified-water target.
Is wear protection necessary?
Usually yes. Iron ore slurry is abrasive, especially when it contains quartz, sand, or hard mineral particles.
Can clarified water be reused?
Yes. Clarified liquid can often be returned to grinding, washing, or classification. Further treatment may be added if stricter water quality is required.
Can the decanter replace a filter press?
The decanter is mainly used for continuous thickening and primary dewatering. A filter press, belt filter, or dryer may still be needed for lower final moisture.
Is flocculant dosing required?
Not always. It depends on fine-particle content, settling behavior, recovery target, and clarified-water requirement.
Peony welcomes distributor and agent cooperation with iron ore beneficiation plants, mining companies, mineral processing contractors, 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 iron ore slurry information, including particle size, solids concentration, 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 iron ore slurry dewatering process.
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