Förfarande för beläggning av pulver i en fluidiserad bädd

摘要

The invention provides a coating method for forming a uniform coating layer on the entirety of powder by using simple means. The method has the steps of supplying the powder into a container; rotating a stirring blade so that a rotation speed of an end portion thereof is about 1.5 m/sec or more while blowing a fluidizing gas into the powder at a velocity of about 3.0 m/sec or more from a position above the powder for stirring and fluidizing, the stirring blade being disposed at a bottom portion of the container; spraying a coating fluid onto the powder from a position thereabove; and drying the coating fluid to form a coating layer.