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Drying method of rotary dryer

AUTHOR: Lisa       DATE: 2012-10-31
Rotary dryer has two drying methods to wet raw materials. One is direct drying that hot air get in touch with wet materials directly; the other one is indirect drying that hot air get in touch with wet materials indirectly, but transfer the heating to wet materials through wall. Direct drying process is the heating transfer along with take away moisture that is flowing high temperature hot air act as heating medium directly contact with wet materials. Then transfer heating quantity, meanwhile take away the moisture in materials. Indirect drying process is not get in touch with materials directly, but through heating container.
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