Abstract: The invention is directed to an apparatus for drying powdered or granular materials comprises a drying tank (1) including a transversely extending drying room (7) adapted to be applied with heating by microwaves, at least one partition (20) defining more than two drying zones in the drying room (7) of the drying tank (1), a rotary shaft (12) disposed in the drying tank (1) in its longitudinal direction to extend through the drying room (7) in a manner of being freely rotatable and agitating blades (30a), (30b) . . . provided on the rotary shaft correspondingly to each drying zone, microwave application units (40) provided for each drying zone, and temperature sensors (50) for each drying zone and corresponding temperature adjusters (51) connected to the respective temperature sensors (50).

Abstract: An apparatus for mixing and dispersing powdered or granular materials into a liquid solvent with a pneumatic transport means including a supply hooper, a pressure vessel which receives granular materials from the hopper for pressurization, a granular material transport pipe attached at one end to the discharge portion of the pressure vessel, a pneumatic force source for feeding the granular materials under pressure through the granular material transport pipe to a mixing tank accommodating the liquid solvent therein. The granular material transport pipe is connected to the mixing tank in an upward or lateral direction at the level below the surface of the liquid solvent contained in the mixing tank. With this structure the granular material is kept from scattering towards the upper portion of the mixing tank, making the operation more sanitary.