... can be powder, sawdust ,straw, rice husk sawdust Drying machine: Product Introduction:Hot-air dryer adopted airflow wink-dry theory ... pollution is small. This dryer is applicable to starch, rice flour, food, medicine, chemical industries drying powdery, flakiness, sensitive materials ... or broken down.3. The thermal efficiency of this machine is high. Airflow drying take material and airflow concurrent ...