World Grain - December 2008 - 68
FEEDOPERATIONS
Improving feed
mill performance
Making technical adjustments in the
pelleting and cooling phase can have
a profound effect on product quality
by Jonathan Bradshaw
The pelleting and cooling portion of the milling operation is
the heavy engineering end of things where results of technical
adjustments are tangible and improvements have the greatest
effect on mill performance.
The scope of pelleting and cooling includes the generation of process steam and the screening and storage of bulk
finished products. Let's start at the beginning with the prepress bin. Often badly designed and too close to the point
at which steam meets the pelleting process, pre-press bin
bottoms are invariably covered with "hammer rash," where
operators have struggled to release meal that has become
damp and bridged across the outlet of the bin. Good design,
good discharge arrangements, allowance for escaping process steam and good access to both discharger and bin outlet
are all matters that should be given due consideration at the
outset. Unfortunately, they rarely are and feed millers have
to live with the consequences.
The next phase in the pelleting operation, once the meal
leaves the pre-press bin, is the choice of conditioner. The
options include turbulator or kettle, expander or compactor. Most millers go for the conventional turbulator, albeit
in different forms and sizes but basically incorporating the
same principles in which the meal temperature can be raised
significantly to generate an amalgam of chewing gum-type
viscosity that is pliable and can be formed into a suitable
Buhler's pellet mill HYPAC. Photo courtesy of Buhler.
Enzymes I Oxidizing Agents I Bromate Replacer I Vitamin Premixes I Vita l Wheat
Gluten I Raw Materials for Baking I Baking Premixes I Laborator y Equipment
www.flour -improve r.de
Muhlenchemie I Kurt-Fischer- Stra ge 55 1 o -zzgxG Ahrens burg , Germany I Tel.:
49 (o) 41 02 1 202-001
rwc
For more information, see Page 82.
www.World-Grain.com / World Grain / December 2008
69
http://www.flour
http://www.r.de
http://www.World-Grain.com
World Grain - December 2008
Table of Contents for the Digital Edition of World Grain - December 2008
Contents
World Grain - December 2008 - 1
World Grain - December 2008 - 2
World Grain - December 2008 - 3
World Grain - December 2008 - Contents
World Grain - December 2008 - 5
World Grain - December 2008 - 6
World Grain - December 2008 - 7
World Grain - December 2008 - 8
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World Grain - December 2008 - 11
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World Grain - December 2008 - 40
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World Grain - December 2008 - 83
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