This type of dryer is used for converting concentrated material to solid/semi solid form. This is designed with vacuum system / without vacuum system. Solvents/water is collected through condenser. Feed is pumped to heat exchanger where it is scrapped/agitated through series of multiple blades on the inner surface of a vertical shell and shell is heated by steam. Due to vigorous agitation the heat transfer is fast and slurry is converted to solid/semi-solid form.