rike,friction and shearing force.The block state materials will soon be smashed and contact the hot air fully and the materials are heated and dried.The dried materials after the de-watering will go up with the hot-air flow.The grading rings will stop and keep the big particles.Small particles will be sidcharged out of the dryer from the ring center and will be collected in the cyclone and dust collector. The not-fully-driedorbig piece materials will be sent to the wall of the equipment by centr