Raw materials are spreaded on the conveying belt through suitable auxiliary mechanism such as distributor, vibrating belt, pulverizer of granulator, belt passes the channel which containing one or several heating units; heating unit is equipped with air heater and circle system. Each channel has one or several damp exhaust system. When raw material is transited, hot air passes through or over it. In this way it makes raw material dry uniformly.
The following materials are dried in the pharmaceutical, food, chemical and other industries:
Suitable for slurry, paste, powder materials;
Heat sensitive materials requiring low temperature drying;
Easy to oxidize, explosive, strong irritant, highly toxic materials;
A material that requires recovery of organic solvents.