Japanese Patent JPS5249571

B2

A convection drier with a travelling bed is provided for drying and heating bulk materials such as coal, quick coke, blast furnace slag etc. The fundamental principle of its operation consists in blowing through a layer of dried material which is continuously travelling. A stream of a drying agent/hot air or combustion gases/ is passed through a bed of dried material blowing upon the particular particles of this material and removing moisture therefrom. Owing to the fact that the drying agent is passed in variable directions, a good turbulence of air flow as well as a high heat exchange can be obtained. The dried bed is passed between two perforated walls by means of a chain conveyor or falls sliding down by itself due to the force of gravity. The overall dimensions of the drier of the invention are far smaller than those ones of conventional driers. The drier can be adapted to drying bulk materials in large quantities and requires only small power supplies. The gas/even polluted combustion gases/ used in the drying process is preliminary cleaned in the drier for further use.

JP2651773A

December 17, 1977

March 06, 1973

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F26B15/10; F26B15/22; F26B17/02; F26B17/06; F26B17/12

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