•Let heat source (for example, low pressure steam or thermal conduct oill pass through the sealed jacket. The heat will be transmitted to raw material to be dried through inner shell;
•Under driving of power, the tank is rotated slowly and the raw material inside it is mixed continuously.The purpose of reinforced drying can e realizd;
•The raw material exists is under vacuum. The drop of team pressure makes the moisture (solvent) at the surface of raw material become saturation and will evaporate. The solvent will be discharged through vacuum pump an recovered in time.The inner moisture (solvent) of raw material will infiltrate, evaporate and discharge continuously. The three processes are carried out unceasingly and the purpose of drying can be realized within a short time.
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