Patent ID: 7703217

Claim:
A drying and storing apparatus for powdered or granular material, comprising: a material storage processing tank including a heating and drying chamber having at its lower end a discharge port and therein a thermal conductive heating means, and a hopper chamber connected to the upper end of said heating and drying chamber for storing therein a powdered or granular material to be heated and dried, said thermal conductive heating means comprising an outer tube unit having a first heater provided in a tube wall and a plurality of fins for conducting the heat of said first heater projected from the inside of said tube wall into the center and spaced in its circumferential direction, a decompression means for depressurizing the inside of said material storage processing tank, and a feeder unit provided at said discharge port and connected to a pneumatic transportation means, wherein said material storage processing tank is formed by integrally connecting said hopper chamber and said heating and drying chamber and has an airtight means, and said hopper chamber is designed to be larger in capacity than said heating and drying chamber, wherein, said feeder unit is connected to a transportation line and a circulation line both of which are diverged from a main line constituting said pneumatic transportation means, a pneumatic transportation pipe, provided corresponding to said transportation line, for supplying the powdered or granular material discharged through said discharge port to a processing apparatus of powdered or granular material, and a circulation pipe, provided corresponding to said circulation line, for supplying the powdered or granular material discharged through said discharge port to the upper part in said hopper chamber, and wherein the powdered or granular material stored in said material storage processing tank is heated and dried by said thermal conductive heating means while said material storage processing tank is depressurized, and whereas the powdered or granular material stored in said hopper chamber is fed into said heating and drying chamber by its own weight for heat and dry processing, each time the powdered or granular material as finished heat and dry processing in said heating and drying chamber is discharged through said discharge port.