Jiangsu Longdai Environmental Protection Co., Ltd.
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Decanter Centrifuge Efficiency: Principles and Optimization for Oil-Solid Separation
The continuous solid bowl decanter centrifuge is a highly efficient industrial system designed for the continuous separation of solids from liquid slurries, with particular effectiveness in oil-rich applications. It operates on the principle of centrifugal sedimentation, making it indispensable across multiple sectors requiring high-performance liquid-solid separation.
Key Components & Function
Rotating Bowl:
A horizontally-oriented, solid-wall bowl that rotates at high speeds, providing the surface for separation and ensuring high solids retention.
Scroll Conveyor:
An internal helical screw that operates at a differential speed, continuously conveying settled solids toward the discharge ports.
Feed and Discharge System:
Designed for continuous operation: an inlet introduces slurry, while separate outlets discharge dewatered solids and clarified liquid.
Operational Process
Continuous Feeding:
The slurry is fed steadily into the rotating bowl.
Centrifugal Separation:
Under high G-force, denser solids migrate outward and accumulate along the bowl wall, while oils and lighter liquids form an inner layer.
Dewatering:
The solids are compacted and mechanically dried as they are conveyed through the bowl’s tapered section.
Dual Discharge:
Dewatered solids are extruded through the solids discharge, while clarified liquid and separated oil are discharged via the liquid weir.
Applications
Wastewater Treatment: Sludge dewatering in municipal and industrial facilities
Oil Processing: Recovery of oils from sludge and separation of oil-water-solid mixtures
Mining & Minerals: Dewatering of tailings, concentrates, and mineral slurries
Food Industry: Separation in edible oil processing, cheese production, and starch extraction
Chemical & Pharmaceutical Industries: Purification and solids removal in synthesis and biosynthesis processes
Benefits
Continuous operation with minimal downtime
High efficiency in solids capture and liquid clarity
Adaptable to varying feed concentrations and compositions
Reduced operational cost via automation and reliability
This system is essential for industries seeking efficient, large-scale separation solutions that ensure product quality, process sustainability, and regulatory compliance.
| Model | Drum diameter(mm) | Processing capacity(m³/h) | Weight(kg) | Dimension(max)(mm) |
| LW250 | 250 | 1~4 | 1300 | 2750*720*900 |
| LW350 | 350 | 5~18 | 2200 | 3412*1090*950 |
| LW450 | 450 | 5~28 | 3000 | 4380*1080*1360 |
| LW520 | 520 | 10~35 | 5000 | 4840*1160*1465 |
| LW550 | 550 | 10~45 | 6500 | 5038*1388*1578 |
| LW580 | 580 | 15~20 | 7000 | 4800*1580*1280 |
| LW620 | 620 | 18~30 | 10000 | 5450*1770*1300 |
| LW650 | 650 | 20~60 | 8500 | 5100*1800*1560 |
| LW760 | 760 | 50~100 | 16000 | 5800*2200*1650 |
