Abstract: Method for the uniform, fully enclosing surface coating of individual particles of pourable materials having nearly uniform particle size with either a smooth, rough or scabrous serrated surface, in a fluidizing fountain with heat air under use of an inorganic and or organic coating material in the form of a suspension or solution. A predetermined quantity of the material is to be coated within a steep funnel-like upwards enlarged container, having a shorter less steep funnel-like lower segment located at the bottom of the upwardly enlarged container through injection of a heat air stream at controlled velocity in ascending vertical direction, forming a fluidized fountain of limited height and diameter incident to the middle axis, thereby forming a core zone; with injection from below and in the same direction as the heat air through one or several injection nozzles, located at the lower end of the container of the suspension or solution facing in an upward direction.

Abstract: Apparatus for the uniform and complete surface coating of individual kernels of pourable materials including a container of either a circular or polygonal configuration whose upper portion constitutes a body of increasing diameter having thereto attached at the bottom part a funnel-like body with an opening towards the top portion. The apparatus is equipped at the upper and lower end with a screen whose change in diameter from the lower screen closure to the top of the lower funnel forms an angle of 20.degree. to 50.degree. perpendicular to the axis and wherein the diameter ratio of the upper part, measured from the low end to the top screen closure may be in a ratio of 1:1.5 to 1:4.5, and whose upper and lower screen closure consists of exchangeable screens of maximum free area with a mesh size smaller than the smallest particle of the material to be coated.