Rotary vacuum drum filter - GIF

[sossol]

I don't understand. What is it filtering? I've never seen anything like this before. I need more details!

They’re usually drums. I couldn’t find any details on this bladed type, but the concept is the same - the drum is sitting in a trough filled with some sort of slurry. As it rotates the liquid is drawn through the mesh of the drum (or blades) and drained. The less-wet slurry is then scraped off into another container.

Neil