Importance

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Abstract

A production method and system for granulating powdered material wherein powdered material is fluidized by applying heated pulsating vibration air, and the fluidized powdered material is suspended up and down at a regular cycle by means of heated pulsating vibration air, the aggregated material is compressed by further vibration of pulsating vibration air, whereby the aggregated powdered material is efficiently made into granulated material with high density and rather small specific volume without causing projection on the surface and without being made porous. The production system is comprised of a granulation tank for storing powdered material to be granulated, the granulation tank having a supply port for introducing heated air at the bottom thereof, a discharge port for discharging the introduced heated air at the top thereof, and a fluidization bed provided above the supply port for receiving the powdered material. A spray apparatus for spraying a binder solution provided in the granulation tank for aggregating the powdered material stored in the granulation tank for growing the material is provided. An air source connected to the supply port of the granulation tank via a conduit pipe; heating apparatus interposed in the conduit pipe for heating the air generated from the air source; and a pulsating vibration air generation means interposed in the conduit pipe for converting the air generated from the air source to pulsating vibration air.

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First Claim