1, price: the price of ring die pellet mill is much higher than that of flat die.
2、Yield: the current output of flat die pellet mill ranges from more than 100 kg to 1000 kg per hour, and not much higher, but the output of ring die pellet mill is at least 800 kg, and the high one can reach more than 20 tons.
3, feeding method: flat die pellet mill is by the material's own weight vertical into the pressing chamber, ring die pellet mill using the curve on the trough rolling compression feed, high-speed rotation point to point into the compression bin, that is, raw materials sent to the pressure wheel also just turn to, there is a view that this will cause uneven feeding, I personally believe that this situation basically does not exist.
4, particle finish and compression ratio: flat die granulator die roller gap is usually 0.05 to 0.2 mm, flat die is usually 0.05 to 0.3 appropriate, flat die granulator compression ratio adjustable range than flat die granulator is greater, the manufacture of particles than the flat die finish is also better; in addition, in the pressure, discharge mode, the pressure wheel adjustment mode, although there are some differences between the two. But as long as the regular manufacturers of equipment, can meet the qualified production requirements.
Therefore, if your current pelletizing output and compression ratio requirements are not high (less than 800 kg per hour), it is recommended to use the flat die pellet mill; if you have high requirements for pelletizing product compression ratio and appearance, and the output is also large, it is better to use the ring die.