DISCUSSIONS

Pellet Die Compression Ratio

Hello, I have my own pelleting plant here in Iran. I current use a CPM pellet mill with the dies purchased locally. I need to know what benefits can i get from changing the compression ratio in the die. Now it is 8:1. If i changed to 11:1 what differences or benefits would i see.

Reason i ask is now our pellets are not compacting right with the materials inside, i wonder if the compression is the problem. Also if i try a die with above compression what different will i see in my pellets, pellet mill and others.

Thank-you
Mohammed Adbul

Comments

  • edited November -1
    Sir,


    What kind of feeds at what size are your producing?


    regards,


    Wouter
  • edited November -1
    A very rough standard used by feed millers (of course depending on feed and pellet sizes) is a compression ratio of 8:1. In reply to your question increasing the compression ratio of the die will of course result in an increased density of the pressed pellet and with this greater pellet durability.

    You would also need to bear in mind that the increased temperature generated during pelleting, and how this will affect your set-up, machinery wear, and pellet ingredients/quality.

    Anyway, i'll leave the rest of this question to a better qualified person.
  • edited November -1
    Hello, I have my own pelleting plant here in Iran. I current use a CPM pellet mill with the dies purchased locally. I need to know what benefits can i get from changing the compression ratio in the die. Now it is 8:1. If i changed to 11:1 what differences or benefits would i see.

    Reason i ask is now our pellets are not compacting right with the materials inside, i wonder if the compression is the problem. Also if i try a die with above compression what different will i see in my pellets, pellet mill and others.

    Thank-you
    Mohammed Adbul

    My friend..
    the compression ration in normal for
    poultry is keep as 12:1 means 4mm will thicness 48mm dies or more.
    shrimp and fish can up to 20:1 as 2mm used 40mm thickness.

    the ration will cause as below..
    process capacity if ration less the capacity will higher.
    machine amper will less.
    hardness of feed will be: more thicker the pellet will be harder.

    for more information please contact to..
    <!-- e --><a href="mailto:younder2000@yahoo.com">mailto:younder2000@yahoo.com</a><!-- e -->
    yutek engineering and idah machinery.
  • edited November -1
    Hello
    The grist spec coming to the pellet mill and the method and quality of the pre pelleting conditioning plant will have more effect that just bolting on a thicker die
    In poultry feed production the die makes the shape of the pellet most of the work towards product quality is done before the die


    Phil Rowan
  • edited November -1
    It is an easy mistake to focus to much on die thickness and compression ratio's, when often the problem is in ensuring that you have effective conditioning prior to pelleting. Adequate mositure in the steam, good temperature, say 90 degrees celsius, and adequate retention time, as well as the points made by others in regard to partical size play a fair more important roll than compression ratios, I believe. Good luck. Peter
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