Too much fines in duck feed, what should I do? Asking about feed processing technology issues
Asking about a processing issue (too much fines in duck feed)
This post was last edited by majj2006 on 2009-12-18 09:25
Currently the pelleting effect for large duck feed is not good. The pellets just out of the pellet mill and after cooling look fine in appearance, but after bagging and arriving at the duck farm, a lot of fines are found, and the pellets easily crumble when pinched at both ends with the fingers. Several ring dies were changed but none worked. Zhengchang 40 machine, ring die compression ratio 14.5 times. The main raw material percentages for large duck feed are as follows: corn 42, wheat middlings 9, palm kernel meal 9, dried cassava 5, rice bran 10, brewer's grains 10, feather meal 1.5, DDGS 5, biscuit scraps 2, lard residue 0.6, rapeseed meal 5. Everyone please help see what the problem is?
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Could it be related to the conditioning temperature?
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The corn now has too much moisture, making it too loose
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Thanks everyone for your attention! The pelleting temperature is 75-80 degrees, corn moisture 14%. Because the miscellaneous meals are relatively dry in moisture, about 10 kg of water was added to the material before pelleting, and the final product moisture is around 12.5%. Tomorrow I will try lowering the finished product moisture.
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Replace the wheat middlings with flour.
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This post was last edited by majj2006 on 2009-12-18 09:40
Flour is quite a bit more expensive than wheat middlings, so I will try it with a bit more cost
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Is there too much coarse feed, and what is the grinding particle size? How much does the moisture differ before and after conditioning?
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The total amount of DDGS, rice bran, brewer's grains and some miscellaneous meals should be reduced a bit. These things are all unfavorable for pelleting. Increase the amounts of corn and wheat middlings!
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This post was last edited by majj2006 on 2009-12-18 09:45
Reply to 7# Little-footed woman
Thank you. The corn grinding screen is 2.5mm. I am now having quality control measure the moisture before and after conditioning.
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(1) The amount of palm meal is too high. This thing has too many hard particles and is difficult to absorb water. It is suggested to reduce the dosage;
(2) Appropriately reduce the compression ratio of the ring die, which can increase the pelleting temperature.
I would like to know the progress of this matter
---------------------
Learning...
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Reply to 1# majj2006
May I ask, with palm meal at 9 percentage points, your feed must be very black. How is the effect of the duck feed?
Currently the pelleting effect for large duck feed is not good. The pellets just out of the pellet mill and after cooling look fine in appearance, but after bagging and arriving at the duck farm, a lot of fines are found, and the pellets easily crumble when pinched at both ends with the fingers. Several ring dies were changed but none worked. Zhengchang 40 machine, ring die compression ratio 14.5 times. The main raw material percentages for large duck feed are as follows: corn 42, wheat middlings 9, palm kernel meal 9, dried cassava 5, rice bran 10, brewer's grains 10, feather meal 1.5, DDGS 5, biscuit scraps 2, lard residue 0.6, rapeseed meal 5. Everyone please help see what the problem is?
---------------------
Could it be related to the conditioning temperature?
---------------------
The corn now has too much moisture, making it too loose
---------------------
Thanks everyone for your attention! The pelleting temperature is 75-80 degrees, corn moisture 14%. Because the miscellaneous meals are relatively dry in moisture, about 10 kg of water was added to the material before pelleting, and the final product moisture is around 12.5%. Tomorrow I will try lowering the finished product moisture.
---------------------
Replace the wheat middlings with flour.
---------------------
This post was last edited by majj2006 on 2009-12-18 09:40
Flour is quite a bit more expensive than wheat middlings, so I will try it with a bit more cost
---------------------
Is there too much coarse feed, and what is the grinding particle size? How much does the moisture differ before and after conditioning?
---------------------
The total amount of DDGS, rice bran, brewer's grains and some miscellaneous meals should be reduced a bit. These things are all unfavorable for pelleting. Increase the amounts of corn and wheat middlings!
---------------------
This post was last edited by majj2006 on 2009-12-18 09:45
Reply to 7# Little-footed woman
Thank you. The corn grinding screen is 2.5mm. I am now having quality control measure the moisture before and after conditioning.
---------------------
(1) The amount of palm meal is too high. This thing has too many hard particles and is difficult to absorb water. It is suggested to reduce the dosage;
(2) Appropriately reduce the compression ratio of the ring die, which can increase the pelleting temperature.
I would like to know the progress of this matter
---------------------
Learning...
---------------------
Reply to 1# majj2006
May I ask, with palm meal at 9 percentage points, your feed must be very black. How is the effect of the duck feed?