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perforated basket centrifuge
,bag lifting centrifuge
The scraper bottom discharge centrifuge is designed for efficient solid-liquid separation and dewatering of mineral salt crystals.
It is suitable for mineral salt processing plants that require automatic cake discharge, stable moisture control, reduced labor requirements, and reliable batch production. The centrifuge combines high centrifugal force with automatic scraper discharge to achieve effective crystal recovery and consistent product quality.
For mineral salt dewatering projects, Peony provides complete process support including material evaluation, centrifuge selection, crystal washing design, anti-corrosion configuration, automation integration, and downstream process matching.
Mineral salts are widely produced from salt lakes, underground brine, mining operations, and chemical processing plants. After crystallization, efficient dewatering is essential to reduce drying load, improve product quality, and maximize salt recovery.
This solution is suitable for:
| Mineral Source | Typical Products |
|---|---|
| Salt Lake Minerals | Potassium Chloride, Potassium Sulfate |
| Rock Salt Deposits | Sodium Chloride |
| Underground Brine Resources | Industrial Salt, Vacuum Salt |
| Potash Mining Operations | Potassium-Based Salts |
| Lithium Extraction By-products | Mixed Mineral Salts |
| Natural Evaporite Deposits | Sulfates and Chlorides |
| Seawater Salt Production | Marine Salt Crystals |
| Multi-Mineral Recovery Projects | Mixed Crystalline Salts |
The scraper bottom discharge design is especially suitable for medium and large-capacity mineral salt production where frequent unloading and stable operation are required.
Mineral salt crystals often present unique separation challenges:
| Challenge | Possible Cause | Solution Focus |
|---|---|---|
| High cake moisture | Fine crystals or insufficient dewatering | Basket speed and cycle optimization |
| Difficult discharge | Dense or compact crystal cake | Automatic scraper discharge |
| Product loss | Crystal leakage through filter media | Filter cloth selection |
| Salt scaling | High salt concentration | Cleaning and washing design |
| Corrosion risk | Chloride-rich mother liquor | SS316L or duplex stainless steel |
| Crystal breakage | Excessive centrifugal force | Process parameter optimization |
| High labor requirement | Manual unloading | Automatic scraper mechanism |
| Variable crystal size | Changes in crystallization conditions | Flexible operating parameters |
| System Part | Function |
|---|---|
| Crystal Slurry Feed System | Transfers mineral salt slurry into centrifuge |
| Scraper Bottom Discharge Centrifuge | Separates crystals from mother liquor |
| Filter Media System | Retains crystals and clarifies filtrate |
| Crystal Washing System | Improves product purity |
| Mother Liquor Collection Tank | Recovery or recycling of filtrate |
| Automatic Scraper System | Removes crystal cake automatically |
| PLC Control System | Controls the entire operating cycle |
| Anti-Corrosion Configuration | Protects equipment in high-salt environments |
| Downstream Equipment | Dryer, conveyor, silo, or packaging line |
This allows the centrifuge to operate as part of a complete mineral salt processing plant.
How the Scraper Bottom Discharge Centrifuge Works in Mineral Salt Dewatering
The typical process is:
Slurry Feeding → Basket Filtration → Crystal Cake Formation → Optional Crystal Washing → Final Dewatering → Scraper Discharge → Bottom Product Collection → Mother Liquor Recovery → Preparation for Next Batch
During operation, mineral salt slurry enters the rotating basket. The liquid phase passes through the filter cloth and basket perforations while crystals are retained on the basket wall. After washing and final dewatering, the scraper automatically removes the crystal cake and discharges it through the bottom outlet.
This process minimizes manual intervention and improves production efficiency.
Technical Parameter
| Model | Diameter | Volume | Capacity | Speed | G-force | Power | Weight | Dimension |
|---|---|---|---|---|---|---|---|---|
| PPSBD-140 | 800 mm | 100 L | 140 kg | 1500 rpm | 1008 | 11 kW | 3000 kg | 1800 × 1200 × 1670 mm |
| PPSBD-200 | 1000 mm | 150 L | 200 kg | 1200 rpm | 806 | 15 kW | 4000 kg | 2050 × 1500 × 2000 mm |
| PPSBD-200 | 1000 mm | 150 L | 200 kg | 1200 rpm | 567 | 15 kW | 4000 kg | 2050 × 1500 × 2000 mm |
| PPSBD-400 | 1250 mm | 280 L | 400 kg | 900 rpm | 567 | 18.5 kW | 5000 kg | 2350 × 1650 × 2450 mm |
| PPSBD-540 | 1250 mm | 400 L | 540 kg | 1000 rpm | 700 | 22 kW | 5000 kg | 2350 × 1650 × 2920 mm |
| PPSBD-540 | 1250 mm | 400 L | 540 kg | 1000 rpm | 700 | 22 kW | 5500 kg | 2400 × 1700 × 2920 mm |
| PPSBD-1200 | 1600 mm | 900 L | 1200 kg | 850 rpm | 647 | 37 kW | 8500 kg | 3000 × 2200 × 3300 mm |
Main Advantages in Mineral Salt Dewatering
Automatic Crystal Discharge
The scraper mechanism automatically removes and discharges the crystal cake, reducing labor costs and improving operating efficiency.
Suitable for Large Salt Production Plants
Compared with manual top discharge centrifuges, scraper bottom discharge centrifuges are better suited for larger batch capacities and higher production rates.
Improved Product Recovery
Optimized filtration and discharge design help maximize mineral salt recovery while minimizing product loss.
Stable Product Moisture
Controlled dewatering cycles help achieve consistent moisture content before drying or packaging.
Corrosion-Resistant Construction
Material options are available to handle chloride-rich and high-salinity process conditions.
Easy Integration with Salt Processing Lines
The bottom discharge structure allows convenient connection to conveyors, dryers, and packaging systems.
Available Custom Options
The centrifuge can be customized according to the process:
| Item | Available Configuration |
|---|---|
| Contact Material | SS304, SS316L, Duplex Stainless Steel |
| Surface Treatment | Salt-resistant polishing |
| Filter Media | Customized according to crystal size |
| Washing System | Optional crystal washing design |
| Scraper Drive | Hydraulic or pneumatic system |
| Motor | Standard or explosion-proof |
| PLC Control | Automatic operating cycles |
| Sealing Design | Open, semi-enclosed, or enclosed |
| Anti-Corrosion Design | Enhanced chloride resistance |
| Downstream Integration | Dryer, conveyor, silo, packaging system |
| Downstream connection | Dryer, conveyor, collection bin, or packaging line |
To recommend a suitable centrifuge solution, please provide:
- Mineral salt type
- Production capacity (kg/batch or t/day)
- Crystal particle size
- Solids concentration (%)
- Feed temperature
- Target moisture content (%)
- Mother liquor composition
- Washing requirement (Yes/No)
- Corrosion conditions
- Automation requirement
- Downstream equipment
- Installation environment
Is this centrifuge suitable for mineral salt crystals?
Yes. It is widely used for sodium sulfate, potassium sulfate, potassium chloride, sodium chloride, and other mineral salt crystals.
What is the advantage of scraper bottom discharge?
The automatic scraper mechanism removes crystal cake efficiently, reducing labor requirements and improving productivity.
Can crystal washing be performed inside the centrifuge?
Yes. An optional crystal washing system can be installed to improve product purity.
Can it handle highly corrosive salt solutions?
Yes. SS316L and duplex stainless steel options are available for chloride-rich and high-salinity environments.
Is it suitable for salt lake projects?
Yes. Scraper bottom discharge centrifuges are commonly used in salt lake mineral extraction and crystallization plants.
Peony welcomes distributor and agent cooperation in mineral salt processing, salt lake resource development, fertilizer salts, industrial salts, and crystal dewatering projects.
We support partners with centrifuge selection, process evaluation, crystal washing design, anti-corrosion configuration, automation integration, spare parts supply, and after-sales service.
Send us your customer's material information, production capacity, crystal size, mother liquor composition, and target moisture requirements. Our team will help evaluate a suitable scraper bottom discharge centrifuge solution for mineral salt dewatering.
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