Abstract: Process for fluidized bed granulation of amino acid-containing fermentation broths comprising the steps Introduction of a drying gas with a temperature of 100° C.-450° C. into the fluidized bed granulation chamber Spraying of the amino acid-containing fermentation broth into the fluidized bed granulation chamber Discharge of the granules granulated in the fluidized bed granulation chamber with the drying gas stream, and drying of the discharged granules in a fluidized bed drying step, wherein the discharged granulated granules are a granule mixture with various particle sizes and contains an oversize fraction, wherein the oversize comprises the particle sizes which lie above a desired particle size, an wherein the oversize fraction is removed from the discharged granule mixture and then comminuted and the comminuted oversize and the granule mixture from which the oversize was separated are fed into the fluidized bed drying step.

Abstract: Process for fluidized bed granulation of amino acid-containing fermentation broths comprising the steps Introduction of a drying gas with a temperature of 100° C.-450° C. into the fluidized bed granulation chamber Spraying of the amino acid-containing fermentation broth into the fluidized bed granulation chamber Discharge of the granules granulated in the fluidized bed granulation chamber with the drying gas stream, and drying of the discharged granules in a fluidized bed drying step, wherein the discharged granulated granules are a granule mixture with various particle sizes and contains an oversize fraction, wherein the oversize comprises the particle sizes which lie above a desired particle size, an wherein the oversize fraction is removed from the discharged granule mixture and then comminuted and the comminuted oversize and the granule mixture from which the oversize was separated are fed into the fluidized bed drying step.

Abstract: A process for the preparation of an animal feed supplement based on fermentation broth is disclosed, wherein the supplement contains wholly or predominantly a fermentation product and the other constituents of the fermentation broth, which is characterised in that the fermentation broth is granulated, compacted and dried in a fluidised bed in one step whilst a sufficient amount of energy to obtain a desired particle diameter and a desired bulk density is introduced into the fluidised bed by mechanical device in addition to the energy required to produce the fluidised bed. As a result of this, it is possible, inter alia, to prepare continuously, in a single process step, granules conforming to specification of additives such as lysine, threonine or tryptophan using, in particular, raw fermentation broths as starting substance.

Abstract: A method for the production of spherical granulated materials from powdered solids and the granulated materials produced by it are disclosed. The method is characterized in that the powdered solids are moistened, possibly together with the usual binders, flow agents and plasticizers for the compression of solids, by the addition of a corresponding quantity of liquid and mixing smoothly in a mixer; they are then compressed with a ring collar mill into cylindrical agglomerate and then rounded in a rounding unit with wrinkle washer. The granulated solids thus produced have a very narrow particle size distribution and are distinguished by good flowability and good dispersability, depending on process controls.