The dryer consists of two or three sections. Section No.1 - uses for the drying process open air circulation and street air, it is intended for preliminary drying of fresh raw materials. Section No.
2 - uses closed air circulation for the drying process, provides the set humidity and temperature regime, is intended for the second stage of drying. Section No. 3 (if available) - is also intended for the second (or final third) stage of drying, it also, like section No.
2, has a closed air circulation.
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