In the context of the continuous upgrading of industrial production and environmental protection management, Decanter Centrifuge, as the main equipment for solid-liquid separation, has played a key role in many fields such as municipal sewage, chemical pharmaceuticals, food processing, mining and smelting, and oil field treatment. However, facing the dazzling array of product models, configuration options and manufacturer brands on the market, how to choose a decanter centrifuge that truly suits your working conditions has become an important issue faced by many companies during the procurement stage.
Learn about the basic working principle of Decanter Centrifuge
The horizontal screw centrifuge is a horizontal, continuously working sedimentation centrifugal device. It uses the centrifugal force field generated by the high-speed rotation of the drum to throw the solid particles in the material to the inner wall of the drum to form a solid phase layer, and then discharges it continuously through the screw conveyor. At the same time, the separated liquid flows out from the other end to achieve continuous solid-liquid separation operation.
Its core structure includes:
Drum
Scroll
Differential
Frame system
Drive motor and control system
Its basic separation logic can be summarized as: “Material enters → Centrifugal stratification → Solid push → Liquid discharge”.
Clarify your actual application needs
Different industries have very different performance requirements for decanter centrifuges. Therefore, before purchasing, you must clearly answer the following questions:
1. Type of material to be processed?
Is it high-water sludge?
Is it a high-viscosity, easy-to-sediment or easy-to-emulsify material?
Is it food grade, chemical, pharmaceutical waste liquid or slurry?
2. What is the target separation purpose?
To achieve solid-liquid separation?
To achieve three-phase separation (solid-liquid-oil)?
To pursue high recovery rate or lower water content slag discharge?
3. What is the processing capacity demand?
How many cubic meters of raw materials need to be processed per hour?
Is there a peak flow?
4. Operating environment requirements?
Is it high temperature, high corrosion or high wear?
Does it need to run continuously for 24 hours?
Are there any special restrictions on noise and vibration?
Only by clarifying the above key parameters can we lay the foundation for subsequent model selection and technical configuration.
Key Parameter Analysis
The performance of a decanter centrifuge depends on the following core technical parameters:
1. Drum Diameter
The larger the drum, the stronger the processing capacity, and it is suitable for processing large flow materials. Common diameters are 250mm, 350mm, 450mm, 520mm, 650mm, etc.
2. Drum Length and Length-to-Diameter Ratio (L/D Ratio)
The drum length determines the residence time of the material in the machine. The larger the L/D, the more complete the separation, but the longer the equipment and the higher the cost. It is generally more reasonable to choose between 2.5 and 4.
3. Speed and Centrifugal Force (G Value)
The centrifugal force determines the separation effect, and the G value is usually between 1000 and 3500. The higher the G value, the better the separation efficiency, but the greater the energy consumption.
4. Differential Speed
The differential speed refers to the relative speed between the spiral and the drum, which determines the solid slag discharge speed. Generally, it is adjusted between 5 and 50 rpm. The higher the differential speed, the faster the slag discharge speed, but it may lead to incomplete separation.
5. Material adaptability
Includes:
Solid content range (1%~50%)
Viscosity and rheology
Whether the liquid phase needs to be clear and transparent
Whether the solid phase particles are easy to wear
As an efficient and energy-saving industrial separation equipment, the decanter centrifuge is an indispensable and important equipment in modern environmental protection, industrial manufacturing, food and medicine and other fields. Choosing a decanter centrifuge that suits your needs is not only an equipment purchase, but also a strategic decision on production efficiency and operating costs. We recommend that enterprises adhere to the principle of “practicality first, performance adaptation, reasonable budget, and reliable service” in the selection process, and not only look at hardware indicators, but also pay attention to brand reputation and after-sales capabilities. As a professional decanter centrifuge manufacturer, we are willing to provide customers with one-stop selection, trial machine, customization and technical support services to help you get the most ideal separation effect with the most reasonable investment.
If you need to know more about the details of the decanter centrifuge selection, or hope that we can provide you with personalized solutions, please feel free to contact us at any time. We will provide you with free technical consultation, solution recommendation and prototype testing services.
