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Which one to choose, flat die or ring die pellet mill

Pellet mills can be divided into two types: flat die pellet mill and ring die pellet mill. Many people who did not learn the pellet mills well will feel confused: what are the main differences between flat die pellet mill and ring die pellet mill? If someone wants to start a pellet line, how should they make a right choice?

Flat Die Wood Pellet Mill

Compared with ring die wood pellet mills, the flat die pellet mills are applied to small and medium sized production which requires lower hourly output and the materials with large adhesive force.

Flat die pellet mill is of low energy consumption, greater mobility, so it is suitable for small scale family workshop, but not for large-scale operation in enterprises and factories. Low output, low pressure, bad final pellet forming shape are disadvantage of flat die wood pellet mill. What’s more, the removing of spare part is indeed a troublesome thing.

Ring Die Wood Pellet Mill

Ring die wood pellet mill are of vertical structure and they combine with the flat die pellet mills’ vertical feeding method. The original circle structure of ring die pellet press is specially designed for those wood materials like gum wood, palm which are hard to press. Because the proportion of the materials is light, so vertical feeding method is selected. In addition, due to the nice stability of circle structure ring die pellet mills, thus the design adopts combination of ring die and flat die.

Ring die pellet mill has both advantages and disadvantages. These are three main advantages:

  1. large production, nice pellet forming shape and high density(1-1.3%)

  2. No additives are needed while pelletizing.

  3. The roller and ring die are of balanced wear. The main disadvantages are the relatively high power consumption.

In a word, ring die wood pellet mills advantages are the flat die wood pellet mills disadvantages, and vice verse. You must consider all the factors that will limit your production carefully. I hope this article will be of a little value for you.

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