Description
DAGYEE Decanter Centrifuge for Mining & Mineral Processing – Heavy-Duty Solid-Liquid Separation for Tailings & Concentrates
The DAGYEE Energy Saving Decanter Centrifuge represents a breakthrough in industrial solid-liquid separation technology. In an era where energy costs are rising and environmental regulations are tightening, we have engineered a centrifuge that delivers exceptional separation performance while consuming significantly less power.
By integrating advanced Variable Frequency Drive (VFD) technology, intelligent process control algorithms, and optimized mechanical design, our energy saving decanter centrifuge
achieves up to 30% reduction in energy consumption compared to conventional centrifuge designs—without compromising on throughput or separation quality.
Whether you are upgrading existing equipment or designing a new processing line, the DAGYEE
energy saving decanter centrifuge offers the perfect balance of performance, sustainability, and return on investment.
Decanter centrifuge description
A decanter centrifuge for the chemical and petrochemical industry is a specialized machine designed for continuous solid-liquid separation in aggressive chemical environments. It handles chemical slurries, catalyst recovery, hydrocarbon separation, polymer dewatering, and petrochemical effluent treatment. The equipment consists of a rotating bowl and a screw conveyor that continuously transports settled solids to the discharge end. The bowl rotates at high speed, generating centrifugal forces that separate components of different densities . The feed mixture enters the rotating bowl, where denser solid particles are thrown outward against the bowl wall, while the lighter liquid phase forms an inner layer. The screw conveyor transports the settled solids to the conical end for discharge, while the clarified liquid overflows at the opposite end .
Chemical and petrochemical streams are often corrosive, contain solvents, or have extreme pH values. The DAGYEE chemical decanter is built with corrosion-resistant materials such as SS316L, duplex stainless steel, Hastelloy, and titanium, with specialized seals and coatings to handle these demanding conditions . It operates continuously and automatically, processing high volumes of chemical slurries with low operating costs.
From catalyst recovery to polymer dewatering, DAGYEE decanters deliver reliable, corrosion-resistant separation for the chemical and petrochemical industry.
Experience maximum solid-liquid separation efficiency
- High-performance separation, resulting in high-value products and low waste management costs
- Lower energy consumption and carbon footprint
- Minimal maintenance costs thanks to continuous operation, high-grade machine materials, smart design and well-thought preventive services
- Low capital cost/capacity ratio
- Wide-ranging feed variations and controllable performance
How does a decanter centrifuge work?
The Process Flow:
Step 1: Slurry Feed
The mining slurry enters the centrifuge through a stationary feed pipe, passing through the hollow shaft of the screw conveyor into the distribution chamber within the bowl.
Step 2: Centrifugal Separation
The rotating bowl generates centrifugal forces that accelerate the settling of solid particles against the bowl wall. The denser mineral particles are thrown outward, while the liquid phase moves toward the center.
Step 3: Solids Conveying
The screw conveyor rotates at a slightly different speed, "ploughing" the settled solids along the bowl wall and pushing them up the conical beach section. The conveyor flights are protected with tungsten carbide hardfacing to resist abrasion.
Step 4: Solids Dewatering
As the solids are conveyed up the beach, they are squeezed against the bowl wall, releasing residual water. The dewatered solids discharge through the solids outlet at the conical end.
Step 5: Liquid Discharge
The clarified liquid overflows adjustable dam plates at the large-diameter end. The liquid phase can be returned to the process or discharged.
Step 6: Continuous, Automatic Operation
The process runs continuously and automatically, handling variable feed conditions without operator intervention.
Technical Specifications
Model Number:DAGYEE-LW
Bowl Diameter: 250 – 720 mm (selectable)
L/D Ratio: 3.0 – 5.0
Bowl Speed: 2000 – 4600 RPM
Separation Factor: Up to 3500 G
Capacity: 0.5 – 100 m³/h
Feed Solids Concentration: 0.5 – 40%
Solid Phase Dryness: 15 – 30% DS
Liquid Phase Clarity: ≤ 0.1% solids
Construction Materials: SS316L (food-grade)
Surface Finish: Ra ≤ 0.8 µm (product-contact)
Seals: FDA-compliant materials
Drive System: Dual motor with VFD
CIP Compatibility: Yes
Power Supply: 380V ± 10%, 50/60Hz, 3 Phase
Control System: PLC with HMI, recipe management
Certification: CE, ISO 9001, Food-grade materials
Bowl Diameter: 250 – 720 mm (selectable)
L/D Ratio: 3.0 – 5.0
Bowl Speed: 2000 – 4600 RPM
Separation Factor: Up to 3500 G
Capacity: 0.5 – 100 m³/h
Feed Solids Concentration: 0.5 – 40%
Solid Phase Dryness: 15 – 30% DS
Liquid Phase Clarity: ≤ 0.1% solids
Construction Materials: SS316L (food-grade)
Surface Finish: Ra ≤ 0.8 µm (product-contact)
Seals: FDA-compliant materials
Drive System: Dual motor with VFD
CIP Compatibility: Yes
Power Supply: 380V ± 10%, 50/60Hz, 3 Phase
Control System: PLC with HMI, recipe management
Certification: CE, ISO 9001, Food-grade materials
Decanter centrifuge specifications
| Model | Drum Diameter (mm) | Length (mm) | Maximum Speed (RPM) | Highest Separation Factor (g) | Mixture Capacity (m³/h) |
|---|---|---|---|---|---|
| LW250-900 | 250 | 900 | 5000 | 3500 | 0.5-3 |
| LW350-1500 | 350 | 1500 | 3800 | 2850 | 1-5 |
| LW400-1200 | 400 | 1200 | 3400 | 2581 | 1-8 |
| LW400-1600 | 400 | 1600 | 3400 | 2581 | 2-10 |
| LW400-1800 | 400 | 1800 | 3400 | 2581 | 2-12 |
| LW450-1800 | 450 | 1800 | 3200 | 2572 | 5-20 |
| LW450-2000 | 450 | 2000 | 3200 | 2572 | 5-25 |
| LW530-2280 | 530 | 2280 | 2800 | 2350 | 10-50 |
| LW600-2400 | 600 | 2400 | 2600 | 2265 | 15-65 |
| LW650-2600 | 650 | 2600 | 2400 | 2100 | 20-80 |
| LW720-2500 | 720 | 2500 | 2200 | 1950 | 25-90 |
| LW800-2560 | 800 | 2560 | 2000 | 1800 | 30-100 |
| LW800-3200 | 800 | 3200 | 2000 | 1800 | 30-110 |
| LW900-3200 | 800 | 3200 | 1800 | 1650 | 30-150 |
Decanter centrifuge key features
Tailings Dewatering
Reduces water content in mine tailings, producing a stable, stackable cake for disposal or storage . This minimizes the environmental footprint of tailings storage facilities.
Mineral Concentrate Thickening
Thickens mineral concentrates (iron ore, copper, gold, etc.) before drying or further processing . Increases solids content for efficient downstream handling.
Coal Slurry Dewatering
Processes coal slurries from washing and beneficiation plants . Recovers coal fines and produces dewatered coal product.
Sand and Aggregate Dewatering
Dewaters sand and aggregate slurries from washing operations . Produces dry sand for construction or further processing.
Process Water Recovery
Recovers valuable process water from tailings and slurries . Returns water to the process, reducing fresh water consumption.
Chemical and Fertilizer Processing
Dewaters chemical precipitates and fertilizer slurries . Handles abrasive materials with wear-resistant construction.
Applications
Catalyst Recovery
Recovers expensive catalyst fines from chemical process streams. Returns catalyst for reuse, reducing operating costs and waste.
Chemical Sludge Dewatering
Dewaters chemical sludges from wastewater treatment, neutralization, and chemical processes. Produces dry cake for disposal or incineration.
Hydrocarbon Separation
Separates hydrocarbons from water and solids in refinery and petrochemical effluent. Produces clean water for discharge or reuse.
Polymer Dewatering
Dewaters polymer slurries from polymerization processes. Recovers polymer solids for further processing.
Wastewater Treatment
Dewaters chemical wastewater sludges from DAF and clarifier underflow. Reduces sludge volume and disposal costs.
Solvent Separation
Separates solvents from solids and water in chemical processes. Recovers valuable solvents for reuse.
Acid and Alkaline Streams
Handles corrosive streams with extreme pH values using corrosion-resistant materials.
Why choose the DAGYEE decanter centrifuge?
| Feature | Customer Value |
|---|---|
| Continuous Operation | 24/7 dewatering without downtime for discharge |
| High Throughput | Single unit handles up to 100 m³/h |
| Energy Efficient | Dual motor VFD with energy recovery reduces power consumption |
| Automatic Operation | PLC controls minimize operator attention |
| High Cake Dryness | Stable 18-28% DS reduces disposal costs |
| Low Polymer Consumption | Optimized design reduces chemical usage |
| Wear Protection | Extended service life in abrasive applications |
| Enclosed Operation | Odor control, safe, clean environment |
| Flexible Configuration | 2-phase or 3-phase separation options |
Proven in Diverse Applications
Our energy saving technology has been validated across multiple industries:
"Switching to DAGYEE energy saving decanter centrifuges reduced our electricity consumption by 27% while actually improving our cake dryness by 2%. The payback period was just 14 months."
— Plant Manager, Municipal Wastewater Treatment Facility, Germany
*"We operate 24/7, so energy costs are a major concern. The DAGYEE VFD-controlled centrifuges have cut our power bills significantly, and the remote monitoring feature gives us peace of mind."*
— Operations Director, Chemical Processing Plant, USA
Contact Us
The DAGYEE Decanter Centrifuge for Chemical & Petrochemical Industry delivers reliable, corrosion-resistant separation for chemical slurries, catalyst recovery, hydrocarbon separation, and polymer dewatering. With continuous operation, high recovery, and automated control, it helps chemical processors reduce waste, recover valuable products, and lower operating costs.
Contact our team for a free consultation and customized centrifuge selection for your chemical application.
