This dryer is suitable to dry various kinds of paste,granules and powder materials which have good heat stability, and can dry heat sensitive materials under special conditions.Solvent can be retrieved during the process of drying and heating medium can be steam,hot water, hot oil ect. Typical materials to be dride are; carbon black, calcium carbonate, plaster, clay, nylon and polyester slices, polyethlene, polypropylene etc.