Process for the granulation of an animal feedstuff additive

Abstract

The invention relates to a process for the granulation of an animal feedstuffs additive comprising amino acids or vitamins in a circulating fluidized bed, wherein the additive is preferably a fermentation product and optionally comprises further constituents from the fermentation broth.

1 - 20 . (canceled) 
   
   
       21 . A granulated animal feedstuffs additive comprising L-threonine in an amount of from about 40 to about 100% weight. 
   
   
       22 . A granulated animal feedstuffs additive, according to  claim 21 , comprising L-threonine in an amount of from about 80 to about 100 wt %. 
   
   
       23 . A granulated animal feedstuffs additive, according to  claim 21 , wherein said granules are substantially spherical. 
   
   
       24 . A granulated animal feedstuffs additive, according to  claim 21 , wherein said granules have an average particle size of 0.1 to 2.0 mm. 
   
   
       25 . A granulated animal feedstuffs additive, according to  claim 21 , wherein 95% of said granules have a diameter in the range between 0.1 and 1.2 mm. 
   
   
       26 . A granulated animal feedstuffs additive, according to  claim 21 , wherein 95% of said granules have a diameter in the range between 0.3 and 0.8 mm. 
   
   
       27 . A granulated animal feedstuffs additive, according to  claim 21 , wherein 95% of said granules have a diameter in the range between 0.5 and 1.2 mm. 
   
   
       28 . A granulated animal feedstuffs additive, according to  claim 21 , wherein said L-threonine is produced by fermentation. 
   
   
       29 . A granulated animal feedstuffs additive, according to  claim 28 , wherein said L-threonine is produced by  Escherichia coli  fermentation. 
   
   
       30 . A granulated animal feedstuffs additive, according to  claim 28 , wherein said L-threonine is produced by  Corynebacterium  fermentation. 
   
   
       31 . A granulated animal feedstuffs additive, according to  claim 28 , wherein said granules comprise up to 20 wt % of a fermentation biomass. 
   
   
       32 . A granulated animal feedstuffs additive, according to  claim 28 , wherein said granules comprise up to 10 wt % of a fermentation biomass. 
   
   
       33 . A granulated animal feedstuffs additive, according to  claim 28 , wherein said granules comprise up to 5 wt % of a fermentation biomass. 
   
   
       34 . A granulated animal feedstuffs additive, according to  claim 21 , wherein said granules comprise substantially pure L-threonine. 
   
   
       35 . A granulated animal feedstuffs additive, according to  claim 21 , wherein said granules comprise L-threonine of up to 99.5% purity. 
   
   
       36 . A granulated animal feedstuffs additive, according to  claim 21 , wherein said granules have a bulk density of from about 600 to about 70 kg/m 3 .