Two Phase Decanter Centrifuge for Mining Tailings

Mining Tailings & Sand Washing Decanter is designed for continuous solid-liquid separation of mine tailings, sand washing wastewater, stone powder slurry, and mineral fine particle slurry.

For most mining and building material slurry applications, the recommended configuration is a two-phase decanter centrifuge because the main target is to separate abrasive mineral solids from water and improve clarified water reuse.

• Coal washing wastewater
• Ore washing tailings
• Sand washing wastewater
• Stone cutting powder slurry
• Glass edging wastewater slurry
• Ceramic slurry
• Kaolin slurry
• Calcium carbonate slurry

Typical materials include coal slime, tailings, stone powder, fine mineral particles, clay slurry, and process water.

• The feed mainly contains solid mineral particles + water.
• It is suitable for high-solid and fine-particle slurry dewatering.
• It helps recover clarified water for reuse and reduce tailings pond load.

• If the slurry contains oil or floating organics.
• If large stones or coarse sand enter without screening.
• If ultra-clear water is required, downstream filtration may still be needed.

1. Mining tailings or sand washing slurry enters the rotating bowl through the feed pipe.
2. Under centrifugal force, heavier mineral particles move outward and form a sediment layer.
3. The screw conveyor continuously pushes the separated solids toward the discharge end.
4. The clarified liquid phase is discharged through the liquid outlet.
5. The discharged solids are collected for stacking, backfilling, drying, or further disposal.

• Continuous automatic operation
• Strong abrasion-resistant structure
• Suitable for fine mineral slurry dewatering
• Reduced tailings and sludge volume
• Higher clarified water recovery
• Lower tailings pond or settling tank load
• Compact footprint
• Designed for long-period continuous operation

With proper thickening, slurry conditioning, grit removal, and stable feeding, this decanter centrifuge can typically achieve:

• 80–95% solid capture rate
• 70–90% suspended solids reduction
• 45–70% cake solids content
• 30–55% final cake moisture
• 40–70% slurry volume reduction
• 60–85% clarified water reuse rate
• 16–24 hours/day continuous operation

Actual results depend on particle size, clay content, feed concentration, abrasion level, polymer dosing, and operating settings.

Is this machine suitable for sand washing wastewater?

Yes. It is suitable for sand washing wastewater, fine sand slurry, stone powder slurry, and mineral fine particle wastewater.

Is wear protection necessary?

Yes. For mining tailings and sand washing slurry, wear-resistant protection is strongly recommended because the feed usually contains abrasive mineral particles.

Is polymer dosing required?

It is optional. Polymer dosing can improve fine particle capture and cake formation, especially when the slurry contains clay or very fine suspended solids.

Can the clarified water be reused?

Yes. In many projects, the clarified liquid can be returned to the washing or processing system after separation, depending on the required water quality.

What information is needed for model selection?

Please provide feed material, capacity, solids content, particle size, clay content, abrasion level, target cake moisture, target water reuse rate, and operating hours.

To recommend a suitable model, please share:

• Feed material name
• Capacity requirement
• Solids content
• Particle size distribution
• Clay or fine particle content
• Abrasion condition
• Target cake moisture
• Target clarified water reuse rate
• Operating hours
• Wear protection requirement
• Site voltage or control preference

Our engineering team can suggest a suitable two-phase decanter centrifuge configuration for your mining tailings or sand washing wastewater project.

Contact Peony for Partnership

If you have local customer channels or project resources in mining tailings, sand washing wastewater, stone powder slurry, glass edging wastewater, ceramic slurry, kaolin slurry, or calcium carbonate slurry treatment, Peony welcomes cooperation.

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 projects.