A Pusher Centrifuge is a type of filtration technique that offers continuous operation to de-water and wash materials. It consists of a constant speed rotor and is fixed to one of several baskets. This assembly is applied with centrifugal force that is generated mechanically for smaller units and hydraulically for larger units to enable separation.
Pusher centrifuges can be used for a variety of applications. A suspension feed enters the process to undergo pre-acceleration and distribution. The subsequent processes involve main filtration and intermediate de-watering, after which the main filtrate is collected. Wash liquid enters the washing step and final de-watering follows.
Wash filtrate is extracted from these two stages. The final step involves discharge of solids which are then collected as the finished product. These process steps take place simultaneously in different parts of the centrifuge. This type of centrifuge is widely accepted due to its ease of modification, such as gas-tight and explosion protection configurations.