Pusher Centrifuge

A pusher centrifuge is a specialized machine used for the separation and classification of solids and liquids in a wide range of industries. It is widely recognized for its efficiency, reliability, and ability to handle large volumes of materials. The operation of a pusher centrifuge is based on the principle of centrifugal force. pusher centrifuges find extensive use in various industries such as chemical, pharmaceutical, food, and mineral processing.

SeFluid’s pusher centrifuges boast energy efficiency, ease of maintenance, and a modular design that can be customized to meet specific process requirements, making them an ideal solution for applications demanding high-capacity, continuous solid-liquid separation with minimal product loss or contamination.

How the Pusher Centrifuge Works

The pusher centrifuge operates based on the principle of centrifugal force and a pusher mechanism. Here is a step-by-step explanation of how it works:

  • Feed Introduction: The mixture of solids and liquids is introduced into the feed section of the centrifuge.
  • Drum Rotation: The drum, also known as the basket, starts to rotate at a high speed. The centrifugal force generated by the rotation pushes the mixture towards the drum walls.
  • Separation: As the mixture moves towards the drum walls, the liquid component, which is usually lighter, passes through the filter media or perforations in the drum and collects inside the drum.
  • Solids Accumulation: The solids, which are heavier and larger in size, remain trapped inside the drum due to their inability to pass through the filter media or perforations. They accumulate near the drum walls.
  • Pusher Mechanism: As the solids continue to accumulate near the drum walls, a pusher mechanism comes into action. The pusher mechanism consists of a series of plates or blades that extend radially from the center of the drum.
  • Solids Discharge: The pusher mechanism gradually pushes the accumulated solids along the length of the drum towards the discharge end. This action separates the solids from the liquid phase.
  • Solids Collection: At the discharge end, the separated solids are collected and removed from the centrifuge for further processing or disposal.
  • Liquid Discharge: The separated liquid, which collected inside the drum during the separation process, is discharged through appropriate outlets or channels.
  • Continuous Operation: Pusher centrifuges can operate continuously, with a continuous feed of the mixture, rotation of the drum, and continuous discharge of solids and liquids.

It’s important to note that pusher centrifuges are designed to handle relatively large volumes of materials and are suitable for applications where continuous operation and efficient separation of solids and liquids are required.


image of pusher centrifuge | SeFluid

Drum Diameter: 337 to 920 mm
Speed: 650 to 2200 r/min
Separation Factor: 236 to 1083
Motor Power: 11 to 90 kW
Production Capacity: 1 to 50 m³/h

Advantages of Pusher Centrifuge

Pusher centrifuges offer several advantages that make them a preferred choice for solid-liquid separation in various industries. Here are some key advantages:

  • High Capacity: Pusher centrifuges are capable of handling large volumes of materials, making them suitable for applications with high throughput requirements. They can process substantial quantities of solids and liquids efficiently.
  • Continuous Operation: The machines are designed for continuous operation, which ensures uninterrupted production and eliminates the need for frequent start-stop cycles. Continuous operation leads to increased productivity and efficiency.
  • Precise Separation: The machines provide precise separation of solids and liquids. The centrifugal force generated by the high-speed rotation ensures effective separation, resulting in a high-quality solid product and a clarified liquid phase.
  • Versatility: Pusher centrifuges are versatile and can be adapted to a wide range of applications. They can handle various types of solids, including crystals, particles of different sizes, and even sticky or fibrous materials. Their adaptability makes them suitable for diverse industries such as chemical, pharmaceutical, food processing, and mining.
  • Flexibility in Process Control: The centrifuges offer flexibility in process control. Operators can adjust parameters such as drum speed, feed rate, and pusher speed to optimize the separation process according to specific requirements. This flexibility allows for fine-tuning and achieving desired separation results.
  • Low Maintenance: The centrifuges are designed for easy maintenance. They often have simple and robust mechanical systems, reducing the need for frequent repairs and minimizing downtime. Routine maintenance tasks such as cleaning, lubrication, and drum replacement can be carried out efficiently.
  • Effective Cake Washing: The centrifuges can be equipped with cake washing capabilities, allowing for efficient removal of impurities and contaminants from the solid cake. This feature is particularly useful in applications where a high level of purity is required.
  • Automated Operation: Many pusher centrifuges are equipped with advanced automation and control systems. These systems enable precise monitoring and control of various parameters, ensuring consistent and reliable separation performance. Automation also reduces the dependency on manual intervention, leading to increased operational efficiency.

Overall, this type of centrifuges offer high capacity, precise separation, versatility, and flexibility, making them valuable tools for solid-liquid separation in industrial processes.

Applications of Pusher Centrifuge

Pusher centrifuges are widely used in various industries for solid-liquid separation due to their efficiency and versatility. Here are some common applications of pusher centrifuges:

  • Chemical Industry: The centrifuges are extensively employed in the chemical industry for the separation and purification of chemicals and intermediates. They are used in processes such as the separation of fine chemicals, dyes, pigments, polymers, and pharmaceutical intermediates.
  • Pharmaceutical Industry: The centrifuges play a crucial role in the pharmaceutical industry for the separation and purification of pharmaceutical products. They are utilized in processes such as the separation of active pharmaceutical ingredients (APIs), purification of antibiotics, and recovery of valuable compounds.
  • Food and Beverage Industry: The centrifuges find applications in the food and beverage industry for processes such as the separation of food additives, clarification of fruit juices, separation of edible oils, and dewatering of food waste.
  • Mining and Mineral Processing: This type of centrifuges are utilized in mining and mineral processing operations for the separation of minerals and mineral concentrates. They can handle various types of ores, including coal, iron ore, copper ore, and rare earth minerals.
  • Environmental and Wastewater Treatment: The types of centrifuges are employed in environmental and wastewater treatment facilities for the dewatering of sludge and the separation of solids from liquid effluents. They help in reducing the volume of waste and achieving efficient disposal.
  • Petrochemical Industry: This type of centrifuges are used in the petrochemical industry for the separation and purification of petroleum products, such as the separation of lubricating oils, fuel oils, and waxes.
  • Chemical Recovery: This type of centrifuges are utilized in processes where chemical recovery is required, such as in the recovery of catalysts, solvents, and valuable chemicals from process streams.
  • Mining and Metal Recovery: Pusher centrifuges are employed in mining and metal recovery operations for the separation of metal particles from liquid solutions, such as the recovery of precious metals from mining solutions or the purification of electrolytes in metal refining processes.

These are just a few examples of the diverse applications of pusher centrifuges. Their versatility and ability to handle a wide range of materials make them indispensable in various industries where efficient solid-liquid separation is essential.

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