The slurry or suspension is fed into the nutsche filter dryer, which contains a perforated plate or a filter medium at the bottom. The liquid phase (filtrate) passes through the filter medium, leaving behind the solid particles on the filter surface.
If required, the solid cake can be washed with a suitable solvent or washing liquid to remove impurities or mother liquor.
After filtration and washing, the remaining wet cake needs to be dried. In an agitated nutsche filter dryer, the vessel is equipped with an agitator or stirring mechanism. This agitator breaks up the cake and promotes efficient drying by exposing more surface area to the drying medium (usually hot air or inert gas).
Once the drying process is complete, the dried solid material can be discharged from the nutsche filter dryer vessel.