... . Durable use 4. One year guarantee hot air drum dryer Working principle of hot air drum dryer 1. Wet chips are transferred ... building materials, metallurgy, and chemical industry.Constituent parts of hot air drum dryer Heating furnace, main rotary drum, conveyors, draught ... fan, cyclone and etc. Technical parameters of hot air drum dryer Model(mm)Gradient(°)Rotary speed (r/min)Inlet ...