The indirect heat transfer dryer,it is widely used in building materials,metallurgy,chemical industry,cement industry drying slag limestone,coal powder,slag,clay or other materials.This machine mainly by the body of revolution,raising plate,driving device,supporting device and sealing ring and etc.With reasonable structure and well made,high output,low energy consumption,easy operation etc.The indirect heat trandfer dryer has compact structure,simple structure,rational layout,and improve the material and heat heat exchange rate,make the material drying effect is good;Basic input less,is only the same production single cylider dryer of happiness,reduce the one-time investment;Reliable operation,low energy consumotion,high thermal efficiency,at the same time,easy to realize automatic control,reduce operating personnel,save labor power resource.The indirect heat transfer dryer is mainly used for drying certain humidity and particle size range particle material.Such  as yellow sand,sand,slag,coal cinder,small size clay,and are not afraid of high temperature and soot smeard other small particle material.After drying material moisture content can reach less than1-0.5%.