Temperature And Retention Time In Conditioning Can Affect Feed Production
Temperature and retention time in conditioning can affect feed production, pellet quality, and consequently bird performance. Conditioning therefore is an important part in the pelleting process.
Conditioning the feed is an important part of feed processing. When mash feed passes through the conditioner, it is exposed to high pressure steam. This steam provides the heat and moisture required for starch gelatinisation, particles adhesion and removal of pathogens in the mash. The steam temperature and retention time in the conditioner are two important factors that can influence pellet quality, defined with the so-called pellet durability index (PDI) and the hardness level of the pellet.
FDSP supply you feed pellet machine with follow features:
1. Gear directly-connecting driving is adopted for high efficiency;
2. Full stainless steel feeder; variable pitch anti-bridging structure; Imported FC control;
3. All stainless steel conditioner with axial steam spraying extends the conditioning and cooking time;
4. Main gear and pinion shaft adopt the carbonizing quenching with high accuracy; smooth driving, low noise and long service life.
5. Gearbox and driving holes’ accuracy are guaranteed by specialized casting supplier and NCC.
6. The bearing and oil seal in the main drive are imported, and especially lubrication oil return system is available to ensure reliable bearing lubrication;
7. 2 pc quick disassembling type precisely-cast die clamp is adopted to connect the die and quill flange, resulting in convenient and quick disassembling of die.
8. Pellet chamber door and feed chute are fully made of stainless steel with high anti-corrosion ability and long service life.
9. The connection between motor and gearbox adopts new type S-shape spring coupling with more convenient disassembling and assembling and more reliable use.
Effect of retention time and steam
Previous studies showed that the optimum temperature for producing high quality pellets is 80°C, and the minimum retention time in the conditioner is 30 seconds. In conditioners with a high retention time, feed undergoes a three to four minute conditioning process in order to improve the adhesion characteristics of the pellet. A higher retention time in the conditioner causes more moisture penetration into the feed particles, and can be obtained through reducing peddle movement for example.