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Pig feed

Pig feeds
Pellet or mash pig feed are popular in the market. Both products share similar production sequence and only pellet feed need extra equipments: pelleting system, cooler and sifting equipments after mash is prepared.
 
Production Process
 
Process sequence for production of mash and pelleted pig feed
 
Mash feed
Squat silo for raw material and milling system

For example soy bean are stored with large quantity and are delivered to this storage by trucks. A hammer milling system will be located here to reduce the size of soy bean before transporting to raw material silo.
Raw material silo and intake systems

Corn, soy bean, rice and other macro ingredients are stored and conveyed to individual silo.
Dosing and weighing

Ingredient is prepared with dosing and weighing system. One or more separate weighing system can be installed for macro- and micro- ingredients. With several hoppers weighing at the same time, cycle time will be shorten to prepare a batch. The quantity of the batch will equal to the size of the first mixer that followed in the next sequence.    
Milling system and first mixer

Grinding is followed to fine grind the material to meet particle size criterion. Fine grinded powder is fed into mixers with metered liquid, fat or molasses added.
Finished product

The well mixed mash is now directed to the finished product bins for bagging or carried away by trucks in bulks.
 
Pellet feed
All manufacturing steps shared with how mash feed is prepared and several more steps required.
Pre-conditioning and pelleting system

When well-mixed mash is prepared, it is fed to pre-conditioner where water and steam are heat treated the mash to kill salmonella and gives a significant reduction of bacteria of mash feed. Mash feed is then pelleted through a pellet mill.
Cooler

Temperature of the pellets is cooled though a counterflow cooler
Sieve and finished product bins

Pellets are conveyed through a sieve to remove impurity and deformed pellets. Fines and deformed pellets are recycled back to bins before the pellet mill. Sieved
pellet with different sizes are stored in individual bins.
Finished product      

Pellets are bagged with automatic bagging system or carried away by trucks in bulks.
 
Tips for pelleting pig feed
Heat sensitive formulation
Piglet feeds that contain milk powder or sugar are called heat sensitive feed. It is because milk powder and sugar are easily carbonized or scorched when temperature reached 60 °C. A low temperature pre-conditioning is the key of success with mash at outlet attains temperature no more higher than 50 °C. It helps the mash to be easily pelleted through the die without scorched and blocked the die. Gap between roller and die inner surface needs careful attention. It is required to securely locked the rollers from rotating to prevent any further mechanical work will apply on the mash when pelleting. It is not a easy task to make heat sensitive piglet feed on a pellet mill and having pellet mill running on low mechanical energy will consequently lowered the throughput. 
 
Other pig feed formulation
Formulation usually contains high amount of grains: barley, wheat or corn. With different proportion of those grains, parameters of the pellet mill operation varied. Steam at low pressure is used to heat treat the mash at pre-conditioner stage. Precision mixed with malasses at high homogeneity will help the formation of pellets.  
 
Capacity for production:
    5ton per hour.
    10ton per hour
    20ton per hour
    40ton per hour
    100ton per hour
Pellet sizes are from 2.5mm, 3.0mm, 3.5mm, 4.5mm to maximum8.0mm
 

 
 
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