Screen Scroll Centrifuge is a filtering or screen centrifuge which is also known as worm screen or conveyor discharge centrifuge. This centrifuge is now one of the widely-used processes in many industries for the separation of solid-liquid mixture.
This type of centrifuge is commonly used with a continuous process in which slurry containing both solid and liquid is continuously fed into and continuously discharged from the centrifuge. In a typical screen scroll centrifuge, the basic principle is that entering feed is separated into liquid and solids as two products.
The feed is transported from small to larger diameter end of conical basket by the inclination of the screen basket and slightly different speed of the scraper worm.
The solid material retained on the screen is moved along the cone via an internal screw conveyor while the liquid output is obtained due to centrifugal force causes the feed slurry to pass through the screen openings. The screen scroll centrifuge may rotate either in horizontal or vertical position.