1. High production capacity
2. Good quality
3. Low labor power and maintainence cost
4. Energy saving

This type of vertical dryer is made of steel structure; inner lining adopts heat preservation materials to keep warm; multilayer high temperature castings are adopted in the roaster; there are vibration system, interception system, temperature control system and intelligent control system installed on some relevant parts of the machine; vapor and smoke are collected with the application of a draught fan and a cyclone dust collector.

 Working Principle: When temperature is showed from 400°C to 500°C by temperature controller on the bottom, materials, whose granularity is not more than 25mm, will be raised to preheating zone by lifter under the instruction of intelligent material level controller; When temperature is showed from 150°C to 250°C by temperature controller on the top, materials will be sent into cross vibration chute by electric shutoff device to take the second preheating. During the vibration-preheating course, materials are dried and loose and evenly distributed into several overlapped distribution cones to take the third drying process till the materials are completely dried and finally discharged.

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