Degussa Aktiengesellschaft

Ulrich Hertz

Heinz Friedrich

Dieter Greissinger

Hermann Lotter

Rudiger Schutte

Claas-Jurgen Klasen

Franz-Ludwig Dahm

Wolfram Binder

Hans-Christian Alt

Andreas Hofler

Wolfgang Polzer

Wolfgang Hohn

Lothar Morl

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.

Process for the preparation of an animal feed supplement based on

An animal feed additive comprising stable pellets is produced by pelletizing from a fermentation broth containing an animal feed additive with at least 33% by weight of the fermentation products present. The pellets can be produced particularly effectively by pelletizing providing they are built up from at least 30% by weight of fine particles of which at least 70% by weight are smaller than 100 .mu.m in size. The biomass may be completely present, partly present or not present at all in the pellets.

Animal feed additive based on fermentation broth, a process for its

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Bruchkobel, Germany

Ulrich Hertz