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Selection of ring die and press roll for pellet mill
Selection of ring die:
Ring die is an important part of pellet mill.
It has a direct effect on the power consumption, capacity and quality of granulation.
The key is to choose the suitable hole and the roughness of the hole.
When a new ring mold is put into operation, check the pelleter's production capacity and particle quality.
If it fails to meet the standard and other operating indicators are abnormal, it indicates that the selected ring mould is not
suitable for the product.
When this occurs, the ring mold specification or product formulation should be reevaluated.
It is impossible for one ring mold to be suitable for all
products, so that it can reach the highest production capacity and the best quality products.
Production capacity and product quality are largely influenced by the design of ring die.
In addition to the thickness of the ring die, the selection should also consider the specifications of the extrusion hole, such
as: import taper hole, taper hole depth, taper extrusion hole length, exit taper hole Angle and depth, they must be suitable
for the specific reasons to be granulated.
Supplementation with moisture and heat (steam) can increase toughness or easy adhesion of most feeds, which can
increase yield when applied to thinner ring molds.
For a given ring die, the smaller the feed particles are, the greater the particle hardness is.

The main spare parts of pellet mill:
The main working parts of the pellet mill are ring die and roller.
There are two kinds of flat mold pellet mill and ring mold pellet mill.
There are straight hole, stepped hole, tapered hole and tapered hole.
The ring die and roller are the most important working parts and fragile parts for both flat and ring granulating machines.