POLYGON MACHINE
Deep Cone Thickener Tanks
Polygonmachine PDCT Series Deep Cone Thickener Tanks are engineered for high-density sludge production, maximum water recovery, and compact solid–liquid separation in sand washing, mining, recycling, and industrial wastewater applications.
Their steep cone geometry and high settling depth enable the formation of ultra-dense underflow, ideal for operations requiring minimal water loss and reduced tailing volume.
Technical Specifications
| Model | Capacity (m³/h) | Tank Diameter (m) | Tank Height (m) | Cone Angle (°) | Underflow Density | Overflow Clarity | Power (kW) |
|---|---|---|---|---|---|---|---|
| PDCT-100 | 100 | 4 | 6.5 | 60° | 1.1–1.2 t/m³ | <50 NTU | 7.5 |
| PDCT-250 | 250 | 6 | 8.0 | 60° | 1.2–1.3 t/m³ | <40 NTU | 11 |
| PDCT-400 | 400 | 8 | 9.5 | 60° | 1.3–1.4 t/m³ | <30 NTU | 15 |
| PDCT-600 | 600 | 10 | 11.0 | 60° | 1.4 t/m³ | <25 NTU | 18.5 |
| PDCT-1000 | 1000 | 12 | 13.0 | 60° | 1.4–1.5 t/m³ | <20 NTU | 22 |
Key Features
High-Density Underflow Production
The deep cone design promotes compacting pressure and extended settling time, producing high-density sludge (up to 1.5 t/m³) suitable for stacking, pumping, or filter press feeding.
Maximum Water Recovery
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Overflow clarity typically <20–50 NTU
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Recovers up to 90–95% of process water
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Reduces dependency on fresh water supply
Advanced Flocculation System
Integrated PolySmart™ floc dosing unit ensures rapid aggregation of fine particles and consistent separation efficiency.
Low Footprint, High Capacity
The tall, steep-walled conical design eliminates the need for large surface area tanks, providing a compact sedimentation solution for plants with limited space.
Automatic Underflow Control
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Density-based programmable discharge
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Sludge pumps or gravity discharge options
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Prevents tank clogging and maintains stable operation
Structural Strength
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S355 structural steel construction
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Internal anti-corrosion coating
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Reinforced cone base for high static load
Easy Integration
Designed to operate seamlessly with:
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Hydrocyclones
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Dewatering screens
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Bucket wheels
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Filter presses
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Washing and recycling plants
Performance
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Sludge Density: Up to 1.5 t/m³
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Overflow Water Quality: <20–50 NTU
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Water Recovery: 90–95%
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Chemical Efficiency: Low flocculant consumption: 0.05–0.12 kg/ton solids
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Operation: Continuous, fully automatic
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Start-up Time: <20 minutes
Applications
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Sand & Aggregate Washing Plants – Managing dirty water from hydrocyclones, screens, and washers
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Recycling Plants – Treating slurry with plastics, light organics, and cement residues
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Mining & Mineral Processing – Concentrating fine tailings and improving water recirculation
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Industrial Wastewater Treatment – Removing suspended solids in chemical, ceramic, and food industries
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Filter Press Feeding – Providing high-density slurry to reduce cycle time