Detailed Product Description Dryer:During the process of drying,hot air is sprayed upwards and downward simultaneously to the material on conveyor belt,the spraying speed can be as high as 15m/s,so raw materials can be dried kuickly.the heat source of spraying airflow can be steam,electricity,coal-fired air heating furnace,fuel gas,or thermal oil furnace.principle of workDuring working hot air ...