Discussion created on February 10, 2022
I have an issue with my double screw extruder... When used to process an aggregate materials formulation of less than 30% CP, it will come out fine (I mean - in good shape and floating). But, when I use an aggregate materials formulation of more than 30% CP, it'll come out very poor in shape and will not float.
So, anyone with related issues or solution ideas could you please share?
Sakariyah Shakiru Ariyo likes the comment:
But the same time we need to consider minimum 20% of starch in formulation of feed
Participation in Forum on February 2, 2022
Michael Joseph
As regards the increase to > 30 CP, I changed the quantity of some ingredients which I believe and I think it is the problem of sinking I'm currently facing.
However, thanks for this response... It's really helpful, I will check the starch % as indicated above.
Thumbs up for.
Sakariyah Shakiru Ariyo likes the comment:
Mr. Ariyo,It seems that you are talking about twin-screw extruder. Double screw extruders are extruders with two single screws mounted separately on the equipment. From what you have mentioned, it's not clear what changes in other ingredients do you do when you increase the CP to be >30%.Floatation of the feed is an effect caused by the expansion starch in the formula. A minimum 20% starch is h ...
Participation in Forum on January 30, 2022
Katie Mayo;
Thanks for this piece of information! Please can you recheck the link shared, because it's not responding when I tried to open
Participation in Forum on January 30, 2022
Katie Mayo;
Thanks for this piece of information!
Sakariyah Shakiru Ariyo likes the comment:
Khaled Itani, I am referring to the aqua-durability, or the ability of the pellet to stay intact once it's been fed in the water. To go a little more in detail, a desirable fish pellet should be durable enough to remain floating and absorb water, but not change its shape (i.e. disintegrate) after being in the water for a couple of hours. This is important because not all fish will eat right away. ...
Sakariyah Shakiru Ariyo likes the comment:
I would like to add a few more comments regarding making sinking vs floating fish feed. 1. Floating or sinking pellets are dependent on the formulation. Both the type of starch and inclusion rate of starch will make a shaped fish feed float. Generally, sinking pellets incorporate less starch and higher fat, with post-fat application likely. 2. Additionally, the type of die plate used will help wit ...
Participation in Forum on January 30, 2022
Thank you for sharing this wonderful & insightful information on extruded pellet feed production.
Please, is it possible that particular machine {extruder} that works perfectly well for feed stuff(raw materials) with aggregate crude protein of 30% CP will not work well for feed stuff (raw materials) with aggregate crude protein of 35 - 40% CP?
Thanks.
Participation in Forum on January 30, 2022
Md. Rezaul Haque; this is really a great piece of lecture.
Many thanks.