Abstract: The invention relates to a fluidizing base comprising a flat sheet (1) with holes (2) produced using a laser or electron beam. A sheet of this type has good fluidizing properties and also good cleanability. The invention also provides a method for producing a fluidizing base of this type and a fluidizing device comprising a fluidizing base of this type.

Abstract: The invention relates to a spray-drying device (1) having a vertical drying chamber (2), material-atomization means (4) and drying-gas feed (6) means. Filter elements (11) are present in order to filter the fine particles out of the flow of drying gas (7). The fine particles are periodically removed from the filter elements (11) and collected in fine-particle collection means (10) in such a manner that they remain separate from the main flow of spray-dried material. In this way, it is possible to successfully control the properties of the spray-dried (main) material without it being undesirably influenced by the fine particles.

Abstract: A device for preparing a spray-dried product is described, the distance between the distribution element and a fluidized bed in the device being such that the particles have essentially reached their critical moisture content. A method showing the mixing of the primary liquid droplets delivered by the distribution element and solid particles is also specified.

Abstract: A device for preparing a spray-dried product includes a drying chamber with a distribution element placed therein for atomizing liquid to be spray-dried, an element for supplying drying gas, an element supplying a stream of solid particles to a stream of droplets atomized from the distribution element, and one or more fluidized beds, each having at least one bottom plate with openings which has gas supply structure opening out at the underside thereof. These fluidized beds are placed connected to each other inside the drying chamber, opposite the distribution element, the above in such a way that the combined streams of droplets from the distribution element and solid particles fall essentially into the first bed, and conveyance of material from the first bed to the second bed can take place.