The double cone Vacuum Dryer consists of a jacketed double conical shell rotating around 6 RPM with under the state of vacuum inside the shell, pass steam or hot water in to jacket for heating. The large heating surface area presented by the internals of the cone ensures uniform drying of the product, as the product gently tumbles while the cone rotates slowly. The vaporized steam can be pumped out through vacuum exhaust pipe when the damp raw material absorbed heat. The diffusive action induced by the tumbling cone constantly presents a fresh layer to come into contact with the indirectly heated walls of the shell, the dry speed of raw material is quickened and uniform drying efficiency is raised too. A well designed sealing system enable maintenance of deep vacuum inside the shell, and also ensures positive circulation of a heating media in the jacket. 

Applications of Rotary Vacuum Dryer
1. Material that cannot undertake high temperature.
2. Material that is easy to oxidize.
3. Material that do not permit to destruct.
4. To recover material with residual volatile.
5. Material with vigorous irrelative and toxicity.
6. Biology products and mine.
7. Dry raw materials of pharmaceutical industry, chemical industry, foodstuff industry, dyestuff industry and biochemistry at low temp etc.

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