PRODUCT
▪ Crushing Process
▪ Drying Process
▪ Mixing Process
▪ Pelleting Process
▪ Cooling Process
▪ Packaging Process
▪ Related Machines
▪ Complete Pellet Line
SUPPORT
Three Core Causes of Hardened & Discolored Pellets in Pellet Mill Production
TIME:2026-01-09 11:14:44 WRITER：JINAN GLOBAL MACHINE MANUFACTURER
Excessive material moisture + over-high pressing temperature
Mismatched die compression ratio + overly small roller-die gap
An excessively high die compression ratio in the pellet mill prolongs material retention time in die holes, triggering carbonization. A too-small roller-die gap intensifies friction heat, worsening both hardening and discoloration.
Insufficient machine lubrication + worn components
Poor lubrication of rollers and main shafts, or severely worn parts in the pellet mill, increases operation resistance and heat generation. Metal debris from wear also causes pellet discoloration and abnormal hardness.
