... 2.5kw powder 3.Material can be powder, sawdust ,straw, rice husk sawdust Drying machine: Product Introduction:Hot-air dryer adopted ... and pollution is small. This dryer is applicable to starch, rice flour, food, medicine, chemical industries drying powdery, flakiness, sensitive materials ... is low.5. This dryer hot air source is from oil burner, gas furnace, coal stove, steam heat exchanger.Technical ...