Water-Recovery Industrial Decanter Centrifuge for Tailings water
Description
Water-Recovery Industrial Decanter Centrifuge is designed for
mining, sand washing, coal washing, mineral processing, and
inorganic slurry projects where the main target is to recover
clarified water from slurry and reduce the load on settling ponds
or tailings ponds.
Unlike a wear-resistant decanter page that focuses mainly on
machine protection and longer service life under abrasive slurry
conditions, this page focuses on process water recovery, clarified
liquid reuse, suspended solids reduction, tailings water
management, and closed-loop water circulation.
Typical Mining and Mineral Slurry Applications
- Sand washing process water recovery
- Mineral washing water clarification
- Coal washing process water reuse
- Tailings water clarification
- Mining process water recycling
- Stone powder slurry water recovery
- Kaolin process water clarification
- Calcium carbonate slurry liquid recovery
- Thickener overflow or underflow polishing
- Closed-loop washing water circulation
- Settling pond load reduction
- Industrial slurry clarification before reuse
Why Water Recovery Matters in Mineral Slurry Treatment
Mining, sand washing, coal washing, and mineral processing systems
often use a large amount of process water.
If slurry water is only discharged into settling ponds, the project
may face several problems:
- Large settling pond area
- Slow natural sedimentation
- High suspended solids in return water
- Increased fresh water consumption
- Unstable process water quality
- Higher tailings water handling pressure
- More frequent pond cleaning
- Increased downstream filtration or wastewater treatment load
A decanter centrifuge helps recover clarified liquid from slurry
more quickly than simple settling. This allows part of the water to
return to the process and reduces the amount of slurry sent to
ponds, tanks, or downstream treatment.
Key Water-Recovery Configuration Options
| Configuration Item | Available Options / Purpose |
|---|
| Bowl structure | Heavy-duty solid bowl for abrasive mineral slurry |
| Screw conveyor | Wear-protected conveyor for stable solids conveying |
| Screw flight protection | Tungsten carbide tile, hard alloy, ceramic, or wear-resistant
coating options |
| Feed zone protection | Reinforced feed inlet to reduce impact wear |
| Solids discharge port | Wear-resistant bushings or liners for abrasive cake discharge |
| Liquid outlet | Designed for stable clarified water discharge |
| Differential speed control | Helps balance cake dryness and solids conveying stability |
| Main drive system | Selected according to slurry load and mineral solids content |
| Contact material | Carbon steel, stainless steel, or customized material according to
slurry condition |
| Wear liner | Optional for high-abrasion slurry contact areas |
| Polymer dosing interface | Optional when fine clay or ultra-fine particles need flocculation |
| Control system | PLC / VFD control, torque monitoring, vibration alarm |
| Skid-mounted option | Key Water-Recovery Configuration Options |
How the Decanter Centrifuge Works in Mining Slurry
- Mining slurry enters the rotating bowl through the feed pipe.
- Under centrifugal force, heavier mineral particles move outward and
form a dense sediment layer on the inner wall of the bowl.
- The clarified liquid phase stays closer to the center and is
discharged continuously through the liquid outlet.
- At the same time, the screw conveyor rotates at a controlled
differential speed and pushes the separated mineral solids toward
the discharge end.
- The discharged mineral cake can be collected for stacking,
backfilling, drying, transport, disposal, or further processing.
Technical Parameter
| 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 |
Main Advantages in Water Recovery Applications
Clarified Water Recovery
The centrifuge separates mineral solids from process water and
helps recover clarified liquid for reuse in the production system.
Lower Suspended Solids in Return Water
By removing suspended particles, the system helps improve return
water quality and reduce solids accumulation in the water circuit.
Reduced Settling Pond Load
Mechanical separation reduces the amount of slurry entering
settling ponds, tailings ponds, or clarification basins.
Lower Fresh Water Demand
When recovered water can be reused, the project may reduce part of
its fresh water consumption, depending on site water quality
requirements.
More Stable Process Water Circulation
Stable clarified liquid discharge helps support more consistent
washing, slurry preparation, or mineral processing operation.
Reduced Slurry Volume
The centrifuge separates part of the liquid phase from the slurry,
reducing downstream slurry handling and storage load.
Suitable for Retrofit Projects
The system can be integrated with existing washing lines,
thickening tanks, settling ponds, or process water circuits.
Expected Results
With proper feed control, suitable flocculation, stable operation,
and a clear water-reuse target, this water-recovery industrial
decanter centrifuge can typically help achieve:
- 60–85% clarified water reuse rate, depending on water quality
requirement
- 70–90% suspended solids reduction, depending on particle size and
feed condition
- 80–95% solid capture rate, depending on flocculation and particle
characteristics
- 40–70% slurry volume reduction, depending on feed concentration
- Lower load on settling ponds or tailings ponds
- More stable return water quality
- Reduced fresh water make-up demand in suitable projects
- Reduced downstream filtration or wastewater treatment pressure
- More manageable separated mineral solids for stacking, backfilling,
drying, or disposal
Actual results depend on feed solids content, particle size
distribution, clay content, flocculation effect, water quality
target, feed stability, and downstream reuse requirements.
If ultra-clear water is required, downstream filtration, polishing,
or additional treatment may still be needed.
What Data Is Needed for Selection?
To recommend a suitable mining slurry industrial decanter
centrifuge, please provide:
- Feed material name
- Mine type or mineral type
- Capacity requirement, in m³/h or tons/day
- Feed solids content
- Particle size distribution
- Particle hardness or mineral composition
- Clay content or fine particle content
- Slurry density
- Viscosity, if available
- Abrasion condition
- Current pretreatment, such as screening, thickening, or grit
removal
- Polymer dosing condition, if any
- Target cake moisture
- Target clarified water reuse rate
- Target suspended solids in separated water
- Whether the separated solids need stacking, backfilling, drying, or
disposal
- Required operating hours per day
- Wear protection requirement
- Site voltage and control preference
- Need for skid-mounted system or not
For mining slurry projects, particle hardness, particle size, clay
content, abrasion level, and target water reuse requirement are
especially important before model selection.
FAQ
What is a water-recovery industrial decanter centrifuge?
It is a decanter centrifuge used to separate suspended mineral
solids from slurry water and recover clarified liquid for reuse in
washing, mineral processing, slurry preparation, or process water
circulation systems.
How is it different from a wear-resistant decanter centrifuge?
A wear-resistant decanter centrifuge focuses on protecting the
machine against abrasive slurry and extending the service life of
contact parts. A water-recovery decanter centrifuge focuses on
clarified water recovery, lower suspended solids, process water
reuse, and reduced settling pond load.
Can the recovered water be reused directly?
It depends on the required water quality. In many washing or
mineral processing projects, recovered water can return to the
process. If the process requires very low suspended solids,
additional filtration or polishing may be needed.
Is polymer dosing required?
It depends on particle size and clay content. If the slurry
contains fine clay or ultra-fine suspended solids, polymer dosing
can improve solid capture and clarified water quality. If particles
settle easily, dosing may be reduced or not required.
Can this machine replace a settling pond?
It can reduce the load on settling ponds and improve water recovery
efficiency, but whether it can replace a pond depends on capacity,
water quality target, site layout, and downstream process
requirements.
Contact Peony for Partnership
If you have local customer channels or project resources involving
mining tailings, coal washing wastewater, sand washing wastewater,
stone powder slurry, kaolin slurry, calcium carbonate slurry,
mineral processing slurry, or inorganic powder slurry treatment,
Peony welcomes cooperation.
Peony can support local agents, distributors, and project partners
with technical model selection, wear-resistant configuration
recommendation, process proposal, skid-mounted system integration,
equipment manufacturing, installation guidance, commissioning
support, spare parts, and after-sales service.
Please send us your target market, customer type, project
background, and cooperation proposal. Our team will evaluate the
opportunity and provide technical and commercial support for
suitable mining slurry separation projects.
